diff options
Diffstat (limited to 'tools/perf/util/evsel.c')
| -rw-r--r-- | tools/perf/util/evsel.c | 3732 |
1 files changed, 2511 insertions, 1221 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index dbc0466db368..9cd706f62793 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1,11 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> * * Parts came from builtin-{top,stat,record}.c, see those files for further * copyright notes. - * - * Released under the GPL v2. (and only v2, not any later version) */ +/* + * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select + * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. + */ +#define __SANE_USERSPACE_TYPES__ #include <byteswap.h> #include <errno.h> @@ -13,62 +17,209 @@ #include <linux/bitops.h> #include <api/fs/fs.h> #include <api/fs/tracing_path.h> -#include <traceevent/event-parse.h> #include <linux/hw_breakpoint.h> #include <linux/perf_event.h> #include <linux/compiler.h> #include <linux/err.h> +#include <linux/zalloc.h> #include <sys/ioctl.h> #include <sys/resource.h> +#include <sys/syscall.h> #include <sys/types.h> #include <dirent.h> +#include <stdlib.h> +#include <perf/evsel.h> #include "asm/bug.h" +#include "bpf_counter.h" #include "callchain.h" #include "cgroup.h" +#include "counts.h" #include "event.h" #include "evsel.h" +#include "time-utils.h" +#include "util/env.h" +#include "util/evsel_config.h" +#include "util/evsel_fprintf.h" #include "evlist.h" -#include "util.h" -#include "cpumap.h" +#include <perf/cpumap.h> #include "thread_map.h" #include "target.h" #include "perf_regs.h" +#include "record.h" #include "debug.h" #include "trace-event.h" +#include "session.h" #include "stat.h" +#include "string2.h" #include "memswap.h" +#include "util.h" +#include "util/hashmap.h" +#include "off_cpu.h" +#include "pmu.h" +#include "pmus.h" +#include "drm_pmu.h" +#include "hwmon_pmu.h" +#include "tool_pmu.h" +#include "tp_pmu.h" +#include "rlimit.h" +#include "../perf-sys.h" #include "util/parse-branch-options.h" +#include "util/bpf-filter.h" +#include "util/hist.h" +#include <internal/xyarray.h> +#include <internal/lib.h> +#include <internal/threadmap.h> +#include "util/intel-tpebs.h" -#include "sane_ctype.h" +#include <linux/ctype.h> + +#ifdef HAVE_LIBTRACEEVENT +#include <event-parse.h> +#endif struct perf_missing_features perf_missing_features; static clockid_t clockid; -static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused) +static int evsel__no_extra_init(struct evsel *evsel __maybe_unused) +{ + return 0; +} + +static bool test_attr__enabled(void) +{ + static bool test_attr__enabled; + static bool test_attr__enabled_tested; + + if (!test_attr__enabled_tested) { + char *dir = getenv("PERF_TEST_ATTR"); + + test_attr__enabled = (dir != NULL); + test_attr__enabled_tested = true; + } + return test_attr__enabled; +} + +#define __WRITE_ASS(str, fmt, data) \ +do { \ + if (fprintf(file, #str "=%"fmt "\n", data) < 0) { \ + perror("test attr - failed to write event file"); \ + fclose(file); \ + return -1; \ + } \ +} while (0) + +#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field) + +static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, + int fd, int group_fd, unsigned long flags) { + FILE *file; + char path[PATH_MAX]; + char *dir = getenv("PERF_TEST_ATTR"); + + snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir, + attr->type, attr->config, fd); + + file = fopen(path, "w+"); + if (!file) { + perror("test attr - failed to open event file"); + return -1; + } + + if (fprintf(file, "[event-%d-%llu-%d]\n", + attr->type, attr->config, fd) < 0) { + perror("test attr - failed to write event file"); + fclose(file); + return -1; + } + + /* syscall arguments */ + __WRITE_ASS(fd, "d", fd); + __WRITE_ASS(group_fd, "d", group_fd); + __WRITE_ASS(cpu, "d", cpu.cpu); + __WRITE_ASS(pid, "d", pid); + __WRITE_ASS(flags, "lu", flags); + + /* struct perf_event_attr */ + WRITE_ASS(type, PRIu32); + WRITE_ASS(size, PRIu32); + WRITE_ASS(config, "llu"); + WRITE_ASS(sample_period, "llu"); + WRITE_ASS(sample_type, "llu"); + WRITE_ASS(read_format, "llu"); + WRITE_ASS(disabled, "d"); + WRITE_ASS(inherit, "d"); + WRITE_ASS(pinned, "d"); + WRITE_ASS(exclusive, "d"); + WRITE_ASS(exclude_user, "d"); + WRITE_ASS(exclude_kernel, "d"); + WRITE_ASS(exclude_hv, "d"); + WRITE_ASS(exclude_idle, "d"); + WRITE_ASS(mmap, "d"); + WRITE_ASS(comm, "d"); + WRITE_ASS(freq, "d"); + WRITE_ASS(inherit_stat, "d"); + WRITE_ASS(enable_on_exec, "d"); + WRITE_ASS(task, "d"); + WRITE_ASS(watermark, "d"); + WRITE_ASS(precise_ip, "d"); + WRITE_ASS(mmap_data, "d"); + WRITE_ASS(sample_id_all, "d"); + WRITE_ASS(exclude_host, "d"); + WRITE_ASS(exclude_guest, "d"); + WRITE_ASS(exclude_callchain_kernel, "d"); + WRITE_ASS(exclude_callchain_user, "d"); + WRITE_ASS(mmap2, "d"); + WRITE_ASS(comm_exec, "d"); + WRITE_ASS(context_switch, "d"); + WRITE_ASS(write_backward, "d"); + WRITE_ASS(namespaces, "d"); + WRITE_ASS(use_clockid, "d"); + WRITE_ASS(wakeup_events, PRIu32); + WRITE_ASS(bp_type, PRIu32); + WRITE_ASS(config1, "llu"); + WRITE_ASS(config2, "llu"); + WRITE_ASS(branch_sample_type, "llu"); + WRITE_ASS(sample_regs_user, "llu"); + WRITE_ASS(sample_stack_user, PRIu32); + + fclose(file); return 0; } -void __weak test_attr__ready(void) { } +#undef __WRITE_ASS +#undef WRITE_ASS + +static void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, + int fd, int group_fd, unsigned long flags) +{ + int errno_saved = errno; + + if ((fd != -1) && store_event(attr, pid, cpu, fd, group_fd, flags)) { + pr_err("test attr FAILED"); + exit(128); + } + + errno = errno_saved; +} -static void perf_evsel__no_extra_fini(struct perf_evsel *evsel __maybe_unused) +static void evsel__no_extra_fini(struct evsel *evsel __maybe_unused) { } static struct { size_t size; - int (*init)(struct perf_evsel *evsel); - void (*fini)(struct perf_evsel *evsel); + int (*init)(struct evsel *evsel); + void (*fini)(struct evsel *evsel); } perf_evsel__object = { - .size = sizeof(struct perf_evsel), - .init = perf_evsel__no_extra_init, - .fini = perf_evsel__no_extra_fini, + .size = sizeof(struct evsel), + .init = evsel__no_extra_init, + .fini = evsel__no_extra_fini, }; -int perf_evsel__object_config(size_t object_size, - int (*init)(struct perf_evsel *evsel), - void (*fini)(struct perf_evsel *evsel)) +int evsel__object_config(size_t object_size, int (*init)(struct evsel *evsel), + void (*fini)(struct evsel *evsel)) { if (object_size == 0) @@ -89,9 +240,19 @@ set_methods: return 0; } -#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) +const char *evsel__pmu_name(const struct evsel *evsel) +{ + struct perf_pmu *pmu = evsel__find_pmu(evsel); + + if (pmu) + return pmu->name; + + return event_type(evsel->core.attr.type); +} + +#define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y)) -int __perf_evsel__sample_size(u64 sample_type) +int __evsel__sample_size(u64 sample_type) { u64 mask = sample_type & PERF_SAMPLE_MASK; int size = 0; @@ -113,7 +274,7 @@ int __perf_evsel__sample_size(u64 sample_type) * * This function returns the position of the event id (PERF_SAMPLE_ID or * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct - * sample_event. + * perf_record_sample. */ static int __perf_evsel__calc_id_pos(u64 sample_type) { @@ -167,53 +328,53 @@ static int __perf_evsel__calc_is_pos(u64 sample_type) return idx; } -void perf_evsel__calc_id_pos(struct perf_evsel *evsel) +void evsel__calc_id_pos(struct evsel *evsel) { - evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type); - evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type); + evsel->id_pos = __perf_evsel__calc_id_pos(evsel->core.attr.sample_type); + evsel->is_pos = __perf_evsel__calc_is_pos(evsel->core.attr.sample_type); } -void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, +void __evsel__set_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit) { - if (!(evsel->attr.sample_type & bit)) { - evsel->attr.sample_type |= bit; + if (!(evsel->core.attr.sample_type & bit)) { + evsel->core.attr.sample_type |= bit; evsel->sample_size += sizeof(u64); - perf_evsel__calc_id_pos(evsel); + evsel__calc_id_pos(evsel); } } -void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, +void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit) { - if (evsel->attr.sample_type & bit) { - evsel->attr.sample_type &= ~bit; + if (evsel->core.attr.sample_type & bit) { + evsel->core.attr.sample_type &= ~bit; evsel->sample_size -= sizeof(u64); - perf_evsel__calc_id_pos(evsel); + evsel__calc_id_pos(evsel); } } -void perf_evsel__set_sample_id(struct perf_evsel *evsel, +void evsel__set_sample_id(struct evsel *evsel, bool can_sample_identifier) { if (can_sample_identifier) { - perf_evsel__reset_sample_bit(evsel, ID); - perf_evsel__set_sample_bit(evsel, IDENTIFIER); + evsel__reset_sample_bit(evsel, ID); + evsel__set_sample_bit(evsel, IDENTIFIER); } else { - perf_evsel__set_sample_bit(evsel, ID); + evsel__set_sample_bit(evsel, ID); } - evsel->attr.read_format |= PERF_FORMAT_ID; + evsel->core.attr.read_format |= PERF_FORMAT_ID; } /** - * perf_evsel__is_function_event - Return whether given evsel is a function + * evsel__is_function_event - Return whether given evsel is a function * trace event * * @evsel - evsel selector to be tested * * Return %true if event is function trace event */ -bool perf_evsel__is_function_event(struct perf_evsel *evsel) +bool evsel__is_function_event(struct evsel *evsel) { #define FUNCTION_EVENT "ftrace:function" @@ -223,152 +384,280 @@ bool perf_evsel__is_function_event(struct perf_evsel *evsel) #undef FUNCTION_EVENT } -void perf_evsel__init(struct perf_evsel *evsel, - struct perf_event_attr *attr, int idx) +void evsel__init(struct evsel *evsel, + struct perf_event_attr *attr, int idx) { - evsel->idx = idx; + perf_evsel__init(&evsel->core, attr, idx); evsel->tracking = !idx; - evsel->attr = *attr; - evsel->leader = evsel; - evsel->unit = ""; + evsel->unit = strdup(""); evsel->scale = 1.0; evsel->max_events = ULONG_MAX; evsel->evlist = NULL; + evsel->bpf_obj = NULL; evsel->bpf_fd = -1; - INIT_LIST_HEAD(&evsel->node); INIT_LIST_HEAD(&evsel->config_terms); + INIT_LIST_HEAD(&evsel->bpf_counter_list); + INIT_LIST_HEAD(&evsel->bpf_filters); perf_evsel__object.init(evsel); - evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); - perf_evsel__calc_id_pos(evsel); + evsel->sample_size = __evsel__sample_size(attr->sample_type); + evsel__calc_id_pos(evsel); evsel->cmdline_group_boundary = false; - evsel->metric_expr = NULL; - evsel->metric_name = NULL; - evsel->metric_events = NULL; + evsel->per_pkg_mask = NULL; evsel->collect_stat = false; - evsel->pmu_name = NULL; + evsel->group_pmu_name = NULL; + evsel->skippable = false; + evsel->supported = true; + evsel->alternate_hw_config = PERF_COUNT_HW_MAX; + evsel->script_output_type = -1; // FIXME: OUTPUT_TYPE_UNSET, see builtin-script.c } -struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) +struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx) { - struct perf_evsel *evsel = zalloc(perf_evsel__object.size); + struct evsel *evsel = zalloc(perf_evsel__object.size); if (!evsel) return NULL; - perf_evsel__init(evsel, attr, idx); + evsel__init(evsel, attr, idx); - if (perf_evsel__is_bpf_output(evsel)) { - evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | + if (evsel__is_bpf_output(evsel) && !attr->sample_type) { + evsel->core.attr.sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), - evsel->attr.sample_period = 1; + evsel->core.attr.sample_period = 1; } - if (perf_evsel__is_clock(evsel)) { - /* - * The evsel->unit points to static alias->unit - * so it's ok to use static string in here. - */ - static const char *unit = "msec"; - - evsel->unit = unit; + if (evsel__is_clock(evsel)) { + free((char *)evsel->unit); + evsel->unit = strdup("msec"); evsel->scale = 1e-6; } return evsel; } -static bool perf_event_can_profile_kernel(void) +int copy_config_terms(struct list_head *dst, struct list_head *src) { - return geteuid() == 0 || perf_event_paranoid() == -1; + struct evsel_config_term *pos, *tmp; + + list_for_each_entry(pos, src, list) { + tmp = malloc(sizeof(*tmp)); + if (tmp == NULL) + return -ENOMEM; + + *tmp = *pos; + if (tmp->free_str) { + tmp->val.str = strdup(pos->val.str); + if (tmp->val.str == NULL) { + free(tmp); + return -ENOMEM; + } + } + list_add_tail(&tmp->list, dst); + } + return 0; } -struct perf_evsel *perf_evsel__new_cycles(bool precise) +static int evsel__copy_config_terms(struct evsel *dst, struct evsel *src) { - struct perf_event_attr attr = { - .type = PERF_TYPE_HARDWARE, - .config = PERF_COUNT_HW_CPU_CYCLES, - .exclude_kernel = !perf_event_can_profile_kernel(), - }; - struct perf_evsel *evsel; + return copy_config_terms(&dst->config_terms, &src->config_terms); +} - event_attr_init(&attr); +/** + * evsel__clone - create a new evsel copied from @orig + * @orig: original evsel + * + * The assumption is that @orig is not configured nor opened yet. + * So we only care about the attributes that can be set while it's parsed. + */ +struct evsel *evsel__clone(struct evsel *dest, struct evsel *orig) +{ + struct evsel *evsel; - if (!precise) - goto new_event; - /* - * Unnamed union member, not supported as struct member named - * initializer in older compilers such as gcc 4.4.7 - * - * Just for probing the precise_ip: - */ - attr.sample_period = 1; + BUG_ON(orig->core.fd); + BUG_ON(orig->counts); + BUG_ON(orig->priv); + BUG_ON(orig->per_pkg_mask); + + /* cannot handle BPF objects for now */ + if (orig->bpf_obj) + return NULL; + + if (dest) + evsel = dest; + else + evsel = evsel__new(&orig->core.attr); - perf_event_attr__set_max_precise_ip(&attr); - /* - * Now let the usual logic to set up the perf_event_attr defaults - * to kick in when we return and before perf_evsel__open() is called. - */ - attr.sample_period = 0; -new_event: - evsel = perf_evsel__new(&attr); if (evsel == NULL) - goto out; + return NULL; + + evsel->core.cpus = perf_cpu_map__get(orig->core.cpus); + evsel->core.pmu_cpus = perf_cpu_map__get(orig->core.pmu_cpus); + evsel->core.threads = perf_thread_map__get(orig->core.threads); + evsel->core.nr_members = orig->core.nr_members; + evsel->core.system_wide = orig->core.system_wide; + evsel->core.requires_cpu = orig->core.requires_cpu; + evsel->core.is_pmu_core = orig->core.is_pmu_core; + + if (orig->name) { + evsel->name = strdup(orig->name); + if (evsel->name == NULL) + goto out_err; + } + if (orig->group_name) { + evsel->group_name = strdup(orig->group_name); + if (evsel->group_name == NULL) + goto out_err; + } + if (orig->group_pmu_name) { + evsel->group_pmu_name = strdup(orig->group_pmu_name); + if (evsel->group_pmu_name == NULL) + goto out_err; + } + if (orig->filter) { + evsel->filter = strdup(orig->filter); + if (evsel->filter == NULL) + goto out_err; + } + if (orig->metric_id) { + evsel->metric_id = strdup(orig->metric_id); + if (evsel->metric_id == NULL) + goto out_err; + } + evsel->cgrp = cgroup__get(orig->cgrp); +#ifdef HAVE_LIBTRACEEVENT + if (orig->tp_sys) { + evsel->tp_sys = strdup(orig->tp_sys); + if (evsel->tp_sys == NULL) + goto out_err; + } + if (orig->tp_name) { + evsel->tp_name = strdup(orig->tp_name); + if (evsel->tp_name == NULL) + goto out_err; + } + evsel->tp_format = orig->tp_format; +#endif + evsel->handler = orig->handler; + evsel->core.leader = orig->core.leader; + evsel->metric_leader = orig->metric_leader; + + evsel->max_events = orig->max_events; + zfree(&evsel->unit); + if (orig->unit) { + evsel->unit = strdup(orig->unit); + if (evsel->unit == NULL) + goto out_err; + } + evsel->scale = orig->scale; + evsel->snapshot = orig->snapshot; + evsel->per_pkg = orig->per_pkg; + evsel->percore = orig->percore; + evsel->precise_max = orig->precise_max; + evsel->is_libpfm_event = orig->is_libpfm_event; + + evsel->exclude_GH = orig->exclude_GH; + evsel->sample_read = orig->sample_read; + evsel->collect_stat = orig->collect_stat; + evsel->weak_group = orig->weak_group; + evsel->use_config_name = orig->use_config_name; + evsel->pmu = orig->pmu; + evsel->first_wildcard_match = orig->first_wildcard_match; + + if (evsel__copy_config_terms(evsel, orig) < 0) + goto out_err; + + evsel->alternate_hw_config = orig->alternate_hw_config; - /* use asprintf() because free(evsel) assumes name is allocated */ - if (asprintf(&evsel->name, "cycles%s%s%.*s", - (attr.precise_ip || attr.exclude_kernel) ? ":" : "", - attr.exclude_kernel ? "u" : "", - attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0) - goto error_free; -out: return evsel; -error_free: - perf_evsel__delete(evsel); - evsel = NULL; - goto out; + +out_err: + evsel__delete(evsel); + return NULL; } /* * Returns pointer with encoded error via <linux/err.h> interface. */ -struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) +struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx, bool format) { - struct perf_evsel *evsel = zalloc(perf_evsel__object.size); - int err = -ENOMEM; + struct perf_event_attr attr = { + .type = PERF_TYPE_TRACEPOINT, + .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | + PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), + }; + struct evsel *evsel = zalloc(perf_evsel__object.size); + int err = -ENOMEM, id = -1; - if (evsel == NULL) { + if (evsel == NULL) goto out_err; - } else { - struct perf_event_attr attr = { - .type = PERF_TYPE_TRACEPOINT, - .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | - PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), - }; - if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) - goto out_free; - evsel->tp_format = trace_event__tp_format(sys, name); - if (IS_ERR(evsel->tp_format)) { - err = PTR_ERR(evsel->tp_format); + if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) + goto out_free; + +#ifdef HAVE_LIBTRACEEVENT + evsel->tp_sys = strdup(sys); + if (!evsel->tp_sys) + goto out_free; + + evsel->tp_name = strdup(name); + if (!evsel->tp_name) + goto out_free; +#endif + + event_attr_init(&attr); + + if (format) { + id = tp_pmu__id(sys, name); + if (id < 0) { + err = id; goto out_free; } - - event_attr_init(&attr); - attr.config = evsel->tp_format->id; - attr.sample_period = 1; - perf_evsel__init(evsel, &attr, idx); } - + attr.config = (__u64)id; + attr.sample_period = 1; + evsel__init(evsel, &attr, idx); return evsel; out_free: zfree(&evsel->name); +#ifdef HAVE_LIBTRACEEVENT + zfree(&evsel->tp_sys); + zfree(&evsel->tp_name); +#endif free(evsel); out_err: return ERR_PTR(err); } -const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { +#ifdef HAVE_LIBTRACEEVENT +struct tep_event *evsel__tp_format(struct evsel *evsel) +{ + struct tep_event *tp_format = evsel->tp_format; + + if (tp_format) + return tp_format; + + if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT) + return NULL; + + if (!evsel->tp_sys) + tp_format = trace_event__tp_format_id(evsel->core.attr.config); + else + tp_format = trace_event__tp_format(evsel->tp_sys, evsel->tp_name); + + if (IS_ERR(tp_format)) { + int err = -PTR_ERR(evsel->tp_format); + + pr_err("Error getting tracepoint format '%s' '%s'(%d)\n", + evsel__name(evsel), strerror(err), err); + return NULL; + } + evsel->tp_format = tp_format; + return evsel->tp_format; +} +#endif + +const char *const evsel__hw_names[PERF_COUNT_HW_MAX] = { "cycles", "instructions", "cache-references", @@ -381,19 +670,40 @@ const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { "ref-cycles", }; -static const char *__perf_evsel__hw_name(u64 config) +char *evsel__bpf_counter_events; + +bool evsel__match_bpf_counter_events(const char *name) { - if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) - return perf_evsel__hw_names[config]; + int name_len; + bool match; + char *ptr; + + if (!evsel__bpf_counter_events) + return false; + + ptr = strstr(evsel__bpf_counter_events, name); + name_len = strlen(name); + + /* check name matches a full token in evsel__bpf_counter_events */ + match = (ptr != NULL) && + ((ptr == evsel__bpf_counter_events) || (*(ptr - 1) == ',')) && + ((*(ptr + name_len) == ',') || (*(ptr + name_len) == '\0')); + + return match; +} + +static const char *__evsel__hw_name(u64 config) +{ + if (config < PERF_COUNT_HW_MAX && evsel__hw_names[config]) + return evsel__hw_names[config]; return "unknown-hardware"; } -static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) +static int evsel__add_modifiers(struct evsel *evsel, char *bf, size_t size) { int colon = 0, r = 0; - struct perf_event_attr *attr = &evsel->attr; - bool exclude_guest_default = false; + struct perf_event_attr *attr = &evsel->core.attr; #define MOD_PRINT(context, mod) do { \ if (!attr->exclude_##context) { \ @@ -405,17 +715,15 @@ static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t MOD_PRINT(kernel, 'k'); MOD_PRINT(user, 'u'); MOD_PRINT(hv, 'h'); - exclude_guest_default = true; } if (attr->precise_ip) { if (!colon) colon = ++r; r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); - exclude_guest_default = true; } - if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { + if (attr->exclude_host || attr->exclude_guest) { MOD_PRINT(host, 'H'); MOD_PRINT(guest, 'G'); } @@ -425,13 +733,18 @@ static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t return r; } -static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) +int __weak arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) { - int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); - return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); + return scnprintf(bf, size, "%s", __evsel__hw_name(evsel->core.attr.config)); } -const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { +static int evsel__hw_name(struct evsel *evsel, char *bf, size_t size) +{ + int r = arch_evsel__hw_name(evsel, bf, size); + return r + evsel__add_modifiers(evsel, bf + r, size - r); +} + +const char *const evsel__sw_names[PERF_COUNT_SW_MAX] = { "cpu-clock", "task-clock", "page-faults", @@ -444,20 +757,20 @@ const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { "dummy", }; -static const char *__perf_evsel__sw_name(u64 config) +static const char *__evsel__sw_name(u64 config) { - if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) - return perf_evsel__sw_names[config]; + if (config < PERF_COUNT_SW_MAX && evsel__sw_names[config]) + return evsel__sw_names[config]; return "unknown-software"; } -static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) +static int evsel__sw_name(struct evsel *evsel, char *bf, size_t size) { - int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); - return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); + int r = scnprintf(bf, size, "%s", __evsel__sw_name(evsel->core.attr.config)); + return r + evsel__add_modifiers(evsel, bf + r, size - r); } -static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) +static int __evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) { int r; @@ -475,15 +788,14 @@ static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) return r; } -static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) +static int evsel__bp_name(struct evsel *evsel, char *bf, size_t size) { - struct perf_event_attr *attr = &evsel->attr; - int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); - return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); + struct perf_event_attr *attr = &evsel->core.attr; + int r = __evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); + return r + evsel__add_modifiers(evsel, bf + r, size - r); } -const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] - [PERF_EVSEL__MAX_ALIASES] = { +const char *const evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES] = { { "L1-dcache", "l1-d", "l1d", "L1-data", }, { "L1-icache", "l1-i", "l1i", "L1-instruction", }, { "LLC", "L2", }, @@ -493,15 +805,13 @@ const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] { "node", }, }; -const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] - [PERF_EVSEL__MAX_ALIASES] = { +const char *const evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES] = { { "load", "loads", "read", }, { "store", "stores", "write", }, { "prefetch", "prefetches", "speculative-read", "speculative-load", }, }; -const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] - [PERF_EVSEL__MAX_ALIASES] = { +const char *const evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES] = { { "refs", "Reference", "ops", "access", }, { "misses", "miss", }, }; @@ -513,11 +823,11 @@ const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] #define COP(x) (1 << x) /* - * cache operartion stat + * cache operation stat * L1I : Read and prefetch only * ITLB and BPU : Read-only */ -static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { +static const unsigned long evsel__hw_cache_stat[C(MAX)] = { [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), @@ -527,28 +837,27 @@ static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), }; -bool perf_evsel__is_cache_op_valid(u8 type, u8 op) +bool evsel__is_cache_op_valid(u8 type, u8 op) { - if (perf_evsel__hw_cache_stat[type] & COP(op)) + if (evsel__hw_cache_stat[type] & COP(op)) return true; /* valid */ else return false; /* invalid */ } -int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, - char *bf, size_t size) +int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size) { if (result) { - return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], - perf_evsel__hw_cache_op[op][0], - perf_evsel__hw_cache_result[result][0]); + return scnprintf(bf, size, "%s-%s-%s", evsel__hw_cache[type][0], + evsel__hw_cache_op[op][0], + evsel__hw_cache_result[result][0]); } - return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], - perf_evsel__hw_cache_op[op][1]); + return scnprintf(bf, size, "%s-%s", evsel__hw_cache[type][0], + evsel__hw_cache_op[op][1]); } -static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) +static int __evsel__hw_cache_name(u64 config, char *bf, size_t size) { u8 op, result, type = (config >> 0) & 0xff; const char *err = "unknown-ext-hardware-cache-type"; @@ -567,48 +876,51 @@ static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) goto out_err; err = "invalid-cache"; - if (!perf_evsel__is_cache_op_valid(type, op)) + if (!evsel__is_cache_op_valid(type, op)) goto out_err; - return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); + return __evsel__hw_cache_type_op_res_name(type, op, result, bf, size); out_err: return scnprintf(bf, size, "%s", err); } -static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) +static int evsel__hw_cache_name(struct evsel *evsel, char *bf, size_t size) { - int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); - return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); + int ret = __evsel__hw_cache_name(evsel->core.attr.config, bf, size); + return ret + evsel__add_modifiers(evsel, bf + ret, size - ret); } -static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) +static int evsel__raw_name(struct evsel *evsel, char *bf, size_t size) { - int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); - return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); + int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->core.attr.config); + return ret + evsel__add_modifiers(evsel, bf + ret, size - ret); } -const char *perf_evsel__name(struct perf_evsel *evsel) +const char *evsel__name(struct evsel *evsel) { char bf[128]; + if (!evsel) + goto out_unknown; + if (evsel->name) return evsel->name; - switch (evsel->attr.type) { + switch (evsel->core.attr.type) { case PERF_TYPE_RAW: - perf_evsel__raw_name(evsel, bf, sizeof(bf)); + evsel__raw_name(evsel, bf, sizeof(bf)); break; case PERF_TYPE_HARDWARE: - perf_evsel__hw_name(evsel, bf, sizeof(bf)); + evsel__hw_name(evsel, bf, sizeof(bf)); break; case PERF_TYPE_HW_CACHE: - perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); + evsel__hw_cache_name(evsel, bf, sizeof(bf)); break; case PERF_TYPE_SOFTWARE: - perf_evsel__sw_name(evsel, bf, sizeof(bf)); + evsel__sw_name(evsel, bf, sizeof(bf)); break; case PERF_TYPE_TRACEPOINT: @@ -616,21 +928,44 @@ const char *perf_evsel__name(struct perf_evsel *evsel) break; case PERF_TYPE_BREAKPOINT: - perf_evsel__bp_name(evsel, bf, sizeof(bf)); + evsel__bp_name(evsel, bf, sizeof(bf)); + break; + + case PERF_PMU_TYPE_TOOL: + scnprintf(bf, sizeof(bf), "%s", evsel__tool_pmu_event_name(evsel)); break; default: scnprintf(bf, sizeof(bf), "unknown attr type: %d", - evsel->attr.type); + evsel->core.attr.type); break; } evsel->name = strdup(bf); - return evsel->name ?: "unknown"; + if (evsel->name) + return evsel->name; +out_unknown: + return "unknown"; +} + +bool evsel__name_is(struct evsel *evsel, const char *name) +{ + return !strcmp(evsel__name(evsel), name); +} + +const char *evsel__metric_id(const struct evsel *evsel) +{ + if (evsel->metric_id) + return evsel->metric_id; + + if (evsel__is_tool(evsel)) + return evsel__tool_pmu_event_name(evsel); + + return "unknown"; } -const char *perf_evsel__group_name(struct perf_evsel *evsel) +const char *evsel__group_name(struct evsel *evsel) { return evsel->group_name ?: "anon group"; } @@ -645,21 +980,25 @@ const char *perf_evsel__group_name(struct perf_evsel *evsel) * For record -e 'cycles,instructions' and report --group * 'cycles:u, instructions:u' */ -int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) +int evsel__group_desc(struct evsel *evsel, char *buf, size_t size) { int ret = 0; - struct perf_evsel *pos; - const char *group_name = perf_evsel__group_name(evsel); + bool first = true; + struct evsel *pos; + const char *group_name = evsel__group_name(evsel); if (!evsel->forced_leader) ret = scnprintf(buf, size, "%s { ", group_name); - ret += scnprintf(buf + ret, size - ret, "%s", - perf_evsel__name(evsel)); + for_each_group_evsel(pos, evsel) { + if (symbol_conf.skip_empty && + evsel__hists(pos)->stats.nr_samples == 0) + continue; - for_each_group_member(pos, evsel) - ret += scnprintf(buf + ret, size - ret, ", %s", - perf_evsel__name(pos)); + ret += scnprintf(buf + ret, size - ret, "%s%s", + first ? "" : ", ", evsel__name(pos)); + first = false; + } if (!evsel->forced_leader) ret += scnprintf(buf + ret, size - ret, " }"); @@ -667,17 +1006,20 @@ int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) return ret; } -static void __perf_evsel__config_callchain(struct perf_evsel *evsel, - struct record_opts *opts, - struct callchain_param *param) +static void __evsel__config_callchain(struct evsel *evsel, struct record_opts *opts, + struct callchain_param *param) { - bool function = perf_evsel__is_function_event(evsel); - struct perf_event_attr *attr = &evsel->attr; + bool function = evsel__is_function_event(evsel); + struct perf_event_attr *attr = &evsel->core.attr; - perf_evsel__set_sample_bit(evsel, CALLCHAIN); + evsel__set_sample_bit(evsel, CALLCHAIN); attr->sample_max_stack = param->max_stack; + if (opts->kernel_callchains) + attr->exclude_callchain_user = 1; + if (opts->user_callchains) + attr->exclude_callchain_kernel = 1; if (param->record_mode == CALLCHAIN_LBR) { if (!opts->branch_stack) { if (attr->exclude_user) { @@ -685,11 +1027,12 @@ static void __perf_evsel__config_callchain(struct perf_evsel *evsel, "to get user callchain information. " "Falling back to framepointers.\n"); } else { - perf_evsel__set_sample_bit(evsel, BRANCH_STACK); + evsel__set_sample_bit(evsel, BRANCH_STACK); attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER | PERF_SAMPLE_BRANCH_CALL_STACK | PERF_SAMPLE_BRANCH_NO_CYCLES | - PERF_SAMPLE_BRANCH_NO_FLAGS; + PERF_SAMPLE_BRANCH_NO_FLAGS | + PERF_SAMPLE_BRANCH_HW_INDEX; } } else pr_warning("Cannot use LBR callstack with branch stack. " @@ -698,9 +1041,19 @@ static void __perf_evsel__config_callchain(struct perf_evsel *evsel, if (param->record_mode == CALLCHAIN_DWARF) { if (!function) { - perf_evsel__set_sample_bit(evsel, REGS_USER); - perf_evsel__set_sample_bit(evsel, STACK_USER); - attr->sample_regs_user |= PERF_REGS_MASK; + const char *arch = perf_env__arch(evsel__env(evsel)); + + evsel__set_sample_bit(evsel, REGS_USER); + evsel__set_sample_bit(evsel, STACK_USER); + if (opts->sample_user_regs && + DWARF_MINIMAL_REGS(arch) != arch__user_reg_mask()) { + attr->sample_regs_user |= DWARF_MINIMAL_REGS(arch); + pr_warning("WARNING: The use of --call-graph=dwarf may require all the user registers, " + "specifying a subset with --user-regs may render DWARF unwinding unreliable, " + "so the minimal registers set (IP, SP) is explicitly forced.\n"); + } else { + attr->sample_regs_user |= arch__user_reg_mask(); + } attr->sample_stack_user = param->dump_size; attr->exclude_callchain_user = 1; } else { @@ -713,40 +1066,106 @@ static void __perf_evsel__config_callchain(struct perf_evsel *evsel, pr_info("Disabling user space callchains for function trace event.\n"); attr->exclude_callchain_user = 1; } + + if (param->defer && !attr->exclude_callchain_user) + attr->defer_callchain = 1; } -void perf_evsel__config_callchain(struct perf_evsel *evsel, - struct record_opts *opts, - struct callchain_param *param) +void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts, + struct callchain_param *param) { if (param->enabled) - return __perf_evsel__config_callchain(evsel, opts, param); + return __evsel__config_callchain(evsel, opts, param); } -static void -perf_evsel__reset_callgraph(struct perf_evsel *evsel, - struct callchain_param *param) +static void evsel__reset_callgraph(struct evsel *evsel, struct callchain_param *param) { - struct perf_event_attr *attr = &evsel->attr; + struct perf_event_attr *attr = &evsel->core.attr; - perf_evsel__reset_sample_bit(evsel, CALLCHAIN); + evsel__reset_sample_bit(evsel, CALLCHAIN); if (param->record_mode == CALLCHAIN_LBR) { - perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); + evsel__reset_sample_bit(evsel, BRANCH_STACK); attr->branch_sample_type &= ~(PERF_SAMPLE_BRANCH_USER | - PERF_SAMPLE_BRANCH_CALL_STACK); + PERF_SAMPLE_BRANCH_CALL_STACK | + PERF_SAMPLE_BRANCH_HW_INDEX); } if (param->record_mode == CALLCHAIN_DWARF) { - perf_evsel__reset_sample_bit(evsel, REGS_USER); - perf_evsel__reset_sample_bit(evsel, STACK_USER); + evsel__reset_sample_bit(evsel, REGS_USER); + evsel__reset_sample_bit(evsel, STACK_USER); } } -static void apply_config_terms(struct perf_evsel *evsel, - struct record_opts *opts, bool track) +static void evsel__apply_ratio_to_prev(struct evsel *evsel, + struct perf_event_attr *attr, + struct record_opts *opts, + const char *buf) { - struct perf_evsel_config_term *term; + struct perf_event_attr *prev_attr = NULL; + struct evsel *evsel_prev = NULL; + u64 type = evsel->core.attr.sample_type; + u64 prev_type = 0; + double rtp; + + rtp = strtod(buf, NULL); + if (rtp <= 0) { + pr_err("Invalid ratio-to-prev value %lf\n", rtp); + return; + } + if (evsel == evsel__leader(evsel)) { + pr_err("Invalid use of ratio-to-prev term without preceding element in group\n"); + return; + } + if (!evsel->pmu->is_core) { + pr_err("Event using ratio-to-prev term must have a core PMU\n"); + return; + } + + evsel_prev = evsel__prev(evsel); + if (!evsel_prev) { + pr_err("Previous event does not exist.\n"); + return; + } + + if (evsel_prev->pmu->type != evsel->pmu->type) { + pr_err("Compared events (\"%s\", \"%s\") must have same PMU\n", + evsel->name, evsel_prev->name); + return; + } + + prev_attr = &evsel_prev->core.attr; + prev_type = evsel_prev->core.attr.sample_type; + + if (!(prev_type & PERF_SAMPLE_PERIOD)) { + attr->sample_period = prev_attr->sample_period * rtp; + attr->freq = 0; + evsel__reset_sample_bit(evsel, PERIOD); + } else if (!(type & PERF_SAMPLE_PERIOD)) { + prev_attr->sample_period = attr->sample_period / rtp; + prev_attr->freq = 0; + evsel__reset_sample_bit(evsel_prev, PERIOD); + } else { + if (opts->user_interval != ULLONG_MAX) { + prev_attr->sample_period = opts->user_interval; + attr->sample_period = prev_attr->sample_period * rtp; + prev_attr->freq = 0; + attr->freq = 0; + evsel__reset_sample_bit(evsel_prev, PERIOD); + evsel__reset_sample_bit(evsel, PERIOD); + } else { + pr_err("Event period term or count (-c) must be set when using ratio-to-prev term.\n"); + return; + } + } + + arch_evsel__apply_ratio_to_prev(evsel, attr); +} + +static void evsel__apply_config_terms(struct evsel *evsel, + struct record_opts *opts, bool track) +{ + struct evsel_config_term *term; struct list_head *config_terms = &evsel->config_terms; - struct perf_event_attr *attr = &evsel->attr; + struct perf_event_attr *attr = &evsel->core.attr; /* callgraph default */ struct callchain_param param = { .record_mode = callchain_param.record_mode, @@ -754,62 +1173,79 @@ static void apply_config_terms(struct perf_evsel *evsel, u32 dump_size = 0; int max_stack = 0; const char *callgraph_buf = NULL; + const char *rtp_buf = NULL; list_for_each_entry(term, config_terms, list) { switch (term->type) { - case PERF_EVSEL__CONFIG_TERM_PERIOD: + case EVSEL__CONFIG_TERM_PERIOD: if (!(term->weak && opts->user_interval != ULLONG_MAX)) { attr->sample_period = term->val.period; attr->freq = 0; - perf_evsel__reset_sample_bit(evsel, PERIOD); + evsel__reset_sample_bit(evsel, PERIOD); } break; - case PERF_EVSEL__CONFIG_TERM_FREQ: + case EVSEL__CONFIG_TERM_FREQ: if (!(term->weak && opts->user_freq != UINT_MAX)) { attr->sample_freq = term->val.freq; attr->freq = 1; - perf_evsel__set_sample_bit(evsel, PERIOD); + evsel__set_sample_bit(evsel, PERIOD); } break; - case PERF_EVSEL__CONFIG_TERM_TIME: + case EVSEL__CONFIG_TERM_TIME: if (term->val.time) - perf_evsel__set_sample_bit(evsel, TIME); + evsel__set_sample_bit(evsel, TIME); else - perf_evsel__reset_sample_bit(evsel, TIME); + evsel__reset_sample_bit(evsel, TIME); break; - case PERF_EVSEL__CONFIG_TERM_CALLGRAPH: - callgraph_buf = term->val.callgraph; + case EVSEL__CONFIG_TERM_CALLGRAPH: + callgraph_buf = term->val.str; break; - case PERF_EVSEL__CONFIG_TERM_BRANCH: - if (term->val.branch && strcmp(term->val.branch, "no")) { - perf_evsel__set_sample_bit(evsel, BRANCH_STACK); - parse_branch_str(term->val.branch, + case EVSEL__CONFIG_TERM_BRANCH: + if (term->val.str && strcmp(term->val.str, "no")) { + evsel__set_sample_bit(evsel, BRANCH_STACK); + parse_branch_str(term->val.str, &attr->branch_sample_type); } else - perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); + evsel__reset_sample_bit(evsel, BRANCH_STACK); break; - case PERF_EVSEL__CONFIG_TERM_STACK_USER: + case EVSEL__CONFIG_TERM_STACK_USER: dump_size = term->val.stack_user; break; - case PERF_EVSEL__CONFIG_TERM_MAX_STACK: + case EVSEL__CONFIG_TERM_MAX_STACK: max_stack = term->val.max_stack; break; - case PERF_EVSEL__CONFIG_TERM_MAX_EVENTS: + case EVSEL__CONFIG_TERM_MAX_EVENTS: evsel->max_events = term->val.max_events; break; - case PERF_EVSEL__CONFIG_TERM_INHERIT: + case EVSEL__CONFIG_TERM_INHERIT: /* * attr->inherit should has already been set by - * perf_evsel__config. If user explicitly set + * evsel__config. If user explicitly set * inherit using config terms, override global * opt->no_inherit setting. */ attr->inherit = term->val.inherit ? 1 : 0; break; - case PERF_EVSEL__CONFIG_TERM_OVERWRITE: + case EVSEL__CONFIG_TERM_OVERWRITE: attr->write_backward = term->val.overwrite ? 1 : 0; break; - case PERF_EVSEL__CONFIG_TERM_DRV_CFG: + case EVSEL__CONFIG_TERM_DRV_CFG: + break; + case EVSEL__CONFIG_TERM_PERCORE: + break; + case EVSEL__CONFIG_TERM_AUX_OUTPUT: + attr->aux_output = term->val.aux_output ? 1 : 0; + break; + case EVSEL__CONFIG_TERM_AUX_ACTION: + /* Already applied by auxtrace */ + break; + case EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE: + /* Already applied by auxtrace */ + break; + case EVSEL__CONFIG_TERM_CFG_CHG: + break; + case EVSEL__CONFIG_TERM_RATIO_TO_PREV: + rtp_buf = term->val.str; break; default: break; @@ -850,24 +1286,64 @@ static void apply_config_terms(struct perf_evsel *evsel, /* If global callgraph set, clear it */ if (callchain_param.enabled) - perf_evsel__reset_callgraph(evsel, &callchain_param); + evsel__reset_callgraph(evsel, &callchain_param); /* set perf-event callgraph */ if (param.enabled) { if (sample_address) { - perf_evsel__set_sample_bit(evsel, ADDR); - perf_evsel__set_sample_bit(evsel, DATA_SRC); - evsel->attr.mmap_data = track; + evsel__set_sample_bit(evsel, ADDR); + evsel__set_sample_bit(evsel, DATA_SRC); + evsel->core.attr.mmap_data = track; } - perf_evsel__config_callchain(evsel, opts, ¶m); + evsel__config_callchain(evsel, opts, ¶m); } } + if (rtp_buf) + evsel__apply_ratio_to_prev(evsel, attr, opts, rtp_buf); +} + +struct evsel_config_term *__evsel__get_config_term(struct evsel *evsel, enum evsel_term_type type) +{ + struct evsel_config_term *term, *found_term = NULL; + + list_for_each_entry(term, &evsel->config_terms, list) { + if (term->type == type) + found_term = term; + } + + return found_term; +} + +void __weak arch_evsel__set_sample_weight(struct evsel *evsel) +{ + evsel__set_sample_bit(evsel, WEIGHT); } -static bool is_dummy_event(struct perf_evsel *evsel) +void __weak arch__post_evsel_config(struct evsel *evsel __maybe_unused, + struct perf_event_attr *attr __maybe_unused) { - return (evsel->attr.type == PERF_TYPE_SOFTWARE) && - (evsel->attr.config == PERF_COUNT_SW_DUMMY); +} + +void __weak arch_evsel__apply_ratio_to_prev(struct evsel *evsel __maybe_unused, + struct perf_event_attr *attr __maybe_unused) +{ +} + +static void evsel__set_default_freq_period(struct record_opts *opts, + struct perf_event_attr *attr) +{ + if (opts->freq) { + attr->freq = 1; + attr->sample_freq = opts->freq; + } else { + attr->sample_period = opts->default_interval; + } +} + +bool evsel__is_offcpu_event(struct evsel *evsel) +{ + return evsel__is_bpf_output(evsel) && evsel__name_is(evsel, OFFCPU_EVENT) && + evsel->core.attr.sample_type & PERF_SAMPLE_RAW; } /* @@ -898,37 +1374,46 @@ static bool is_dummy_event(struct perf_evsel *evsel) * enable/disable events specifically, as there's no * initial traced exec call. */ -void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, - struct callchain_param *callchain) +void evsel__config(struct evsel *evsel, struct record_opts *opts, + struct callchain_param *callchain) { - struct perf_evsel *leader = evsel->leader; - struct perf_event_attr *attr = &evsel->attr; + struct evsel *leader = evsel__leader(evsel); + struct perf_event_attr *attr = &evsel->core.attr; int track = evsel->tracking; bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; - attr->inherit = !opts->no_inherit; + attr->inherit = target__has_cpu(&opts->target) ? 0 : !opts->no_inherit; attr->write_backward = opts->overwrite ? 1 : 0; + attr->read_format = PERF_FORMAT_LOST; - perf_evsel__set_sample_bit(evsel, IP); - perf_evsel__set_sample_bit(evsel, TID); + evsel__set_sample_bit(evsel, IP); + evsel__set_sample_bit(evsel, TID); if (evsel->sample_read) { - perf_evsel__set_sample_bit(evsel, READ); + evsel__set_sample_bit(evsel, READ); /* * We need ID even in case of single event, because * PERF_SAMPLE_READ process ID specific data. */ - perf_evsel__set_sample_id(evsel, false); + evsel__set_sample_id(evsel, false); /* * Apply group format only if we belong to group * with more than one members. */ - if (leader->nr_members > 1) { + if (leader->core.nr_members > 1) { attr->read_format |= PERF_FORMAT_GROUP; - attr->inherit = 0; + } + + /* + * Inherit + SAMPLE_READ requires SAMPLE_TID in the read_format + */ + if (attr->inherit) { + evsel__set_sample_bit(evsel, TID); + evsel->core.attr.read_format |= + PERF_FORMAT_ID; } } @@ -936,33 +1421,24 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, * We default some events to have a default interval. But keep * it a weak assumption overridable by the user. */ - if (!attr->sample_period || (opts->user_freq != UINT_MAX || - opts->user_interval != ULLONG_MAX)) { - if (opts->freq) { - perf_evsel__set_sample_bit(evsel, PERIOD); - attr->freq = 1; - attr->sample_freq = opts->freq; - } else { - attr->sample_period = opts->default_interval; - } - } + if ((evsel->is_libpfm_event && !attr->sample_period) || + (!evsel->is_libpfm_event && (!attr->sample_period || + opts->user_freq != UINT_MAX || + opts->user_interval != ULLONG_MAX))) + evsel__set_default_freq_period(opts, attr); /* - * Disable sampling for all group members other - * than leader in case leader 'leads' the sampling. + * If attr->freq was set (here or earlier), ask for period + * to be sampled. */ - if ((leader != evsel) && leader->sample_read) { - attr->freq = 0; - attr->sample_freq = 0; - attr->sample_period = 0; - attr->write_backward = 0; - } + if (attr->freq) + evsel__set_sample_bit(evsel, PERIOD); if (opts->no_samples) attr->sample_freq = 0; if (opts->inherit_stat) { - evsel->attr.read_format |= + evsel->core.attr.read_format |= PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID; @@ -970,7 +1446,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, } if (opts->sample_address) { - perf_evsel__set_sample_bit(evsel, ADDR); + evsel__set_sample_bit(evsel, ADDR); attr->mmap_data = track; } @@ -979,24 +1455,26 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, * event, due to issues with page faults while tracing page * fault handler and its overall trickiness nature. */ - if (perf_evsel__is_function_event(evsel)) - evsel->attr.exclude_callchain_user = 1; + if (evsel__is_function_event(evsel)) + evsel->core.attr.exclude_callchain_user = 1; if (callchain && callchain->enabled && !evsel->no_aux_samples) - perf_evsel__config_callchain(evsel, opts, callchain); + evsel__config_callchain(evsel, opts, callchain); - if (opts->sample_intr_regs) { + if (opts->sample_intr_regs && !evsel->no_aux_samples && + !evsel__is_dummy_event(evsel)) { attr->sample_regs_intr = opts->sample_intr_regs; - perf_evsel__set_sample_bit(evsel, REGS_INTR); + evsel__set_sample_bit(evsel, REGS_INTR); } - if (opts->sample_user_regs) { + if (opts->sample_user_regs && !evsel->no_aux_samples && + !evsel__is_dummy_event(evsel)) { attr->sample_regs_user |= opts->sample_user_regs; - perf_evsel__set_sample_bit(evsel, REGS_USER); + evsel__set_sample_bit(evsel, REGS_USER); } if (target__has_cpu(&opts->target) || opts->sample_cpu) - perf_evsel__set_sample_bit(evsel, CPU); + evsel__set_sample_bit(evsel, CPU); /* * When the user explicitly disabled time don't force it here. @@ -1005,48 +1483,70 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, (!perf_missing_features.sample_id_all && (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu || opts->sample_time_set))) - perf_evsel__set_sample_bit(evsel, TIME); + evsel__set_sample_bit(evsel, TIME); if (opts->raw_samples && !evsel->no_aux_samples) { - perf_evsel__set_sample_bit(evsel, TIME); - perf_evsel__set_sample_bit(evsel, RAW); - perf_evsel__set_sample_bit(evsel, CPU); + evsel__set_sample_bit(evsel, TIME); + evsel__set_sample_bit(evsel, RAW); + evsel__set_sample_bit(evsel, CPU); } - if (opts->sample_address) - perf_evsel__set_sample_bit(evsel, DATA_SRC); + if (opts->sample_data_src) + evsel__set_sample_bit(evsel, DATA_SRC); if (opts->sample_phys_addr) - perf_evsel__set_sample_bit(evsel, PHYS_ADDR); + evsel__set_sample_bit(evsel, PHYS_ADDR); if (opts->no_buffering) { attr->watermark = 0; attr->wakeup_events = 1; } if (opts->branch_stack && !evsel->no_aux_samples) { - perf_evsel__set_sample_bit(evsel, BRANCH_STACK); + evsel__set_sample_bit(evsel, BRANCH_STACK); attr->branch_sample_type = opts->branch_stack; } - if (opts->sample_weight) - perf_evsel__set_sample_bit(evsel, WEIGHT); + if (opts->sample_weight || evsel->retire_lat) { + arch_evsel__set_sample_weight(evsel); + evsel->retire_lat = false; + } + attr->task = track; + attr->mmap = track; + attr->mmap2 = track && !perf_missing_features.mmap2; + attr->comm = track; + attr->build_id = track && opts->build_id; + attr->defer_output = track && callchain && callchain->defer; - attr->task = track; - attr->mmap = track; - attr->mmap2 = track && !perf_missing_features.mmap2; - attr->comm = track; + /* + * ksymbol is tracked separately with text poke because it needs to be + * system wide and enabled immediately. + */ + if (!opts->text_poke) + attr->ksymbol = track && !perf_missing_features.ksymbol; + attr->bpf_event = track && !opts->no_bpf_event && !perf_missing_features.bpf; if (opts->record_namespaces) attr->namespaces = track; + if (opts->record_cgroup) { + attr->cgroup = track && !perf_missing_features.cgroup; + evsel__set_sample_bit(evsel, CGROUP); + } + + if (opts->sample_data_page_size) + evsel__set_sample_bit(evsel, DATA_PAGE_SIZE); + + if (opts->sample_code_page_size) + evsel__set_sample_bit(evsel, CODE_PAGE_SIZE); + if (opts->record_switch_events) attr->context_switch = track; if (opts->sample_transaction) - perf_evsel__set_sample_bit(evsel, TRANSACTION); + evsel__set_sample_bit(evsel, TRANSACTION); if (opts->running_time) { - evsel->attr.read_format |= + evsel->core.attr.read_format |= PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING; } @@ -1057,15 +1557,15 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, * Disabling only independent events or group leaders, * keeping group members enabled. */ - if (perf_evsel__is_group_leader(evsel)) + if (evsel__is_group_leader(evsel)) attr->disabled = 1; /* * Setting enable_on_exec for independent events and * group leaders for traced executed by perf. */ - if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && - !opts->initial_delay) + if (target__none(&opts->target) && evsel__is_group_leader(evsel) && + !opts->target.initial_delay) attr->enable_on_exec = 1; if (evsel->immediate) { @@ -1080,7 +1580,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, } if (evsel->precise_max) - perf_event_attr__set_max_precise_ip(attr); + attr->precise_ip = 3; if (opts->all_user) { attr->exclude_kernel = 1; @@ -1092,79 +1592,45 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, attr->exclude_user = 1; } - if (evsel->own_cpus || evsel->unit) - evsel->attr.read_format |= PERF_FORMAT_ID; + if (evsel->core.pmu_cpus || evsel->unit) + evsel->core.attr.read_format |= PERF_FORMAT_ID; /* * Apply event specific term settings, * it overloads any global configuration. */ - apply_config_terms(evsel, opts, track); + evsel__apply_config_terms(evsel, opts, track); evsel->ignore_missing_thread = opts->ignore_missing_thread; /* The --period option takes the precedence. */ if (opts->period_set) { if (opts->period) - perf_evsel__set_sample_bit(evsel, PERIOD); + evsel__set_sample_bit(evsel, PERIOD); else - perf_evsel__reset_sample_bit(evsel, PERIOD); + evsel__reset_sample_bit(evsel, PERIOD); } /* + * A dummy event never triggers any actual counter and therefore + * cannot be used with branch_stack. + * * For initial_delay, a dummy event is added implicitly. * The software event will trigger -EOPNOTSUPP error out, * if BRANCH_STACK bit is set. */ - if (opts->initial_delay && is_dummy_event(evsel)) - perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); -} - -static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) -{ - if (evsel->system_wide) - nthreads = 1; - - evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); + if (evsel__is_dummy_event(evsel)) + evsel__reset_sample_bit(evsel, BRANCH_STACK); - if (evsel->fd) { - int cpu, thread; - for (cpu = 0; cpu < ncpus; cpu++) { - for (thread = 0; thread < nthreads; thread++) { - FD(evsel, cpu, thread) = -1; - } - } + if (evsel__is_offcpu_event(evsel)) { + evsel->core.attr.sample_type &= OFFCPU_SAMPLE_TYPES; + attr->inherit = 0; } - return evsel->fd != NULL ? 0 : -ENOMEM; + arch__post_evsel_config(evsel, attr); } -static int perf_evsel__run_ioctl(struct perf_evsel *evsel, - int ioc, void *arg) -{ - int cpu, thread; - - for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { - for (thread = 0; thread < xyarray__max_y(evsel->fd); thread++) { - int fd = FD(evsel, cpu, thread), - err = ioctl(fd, ioc, arg); - - if (err) - return err; - } - } - - return 0; -} - -int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter) -{ - return perf_evsel__run_ioctl(evsel, - PERF_EVENT_IOC_SET_FILTER, - (void *)filter); -} - -int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) +int evsel__set_filter(struct evsel *evsel, const char *filter) { char *new_filter = strdup(filter); @@ -1177,13 +1643,12 @@ int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) return -1; } -static int perf_evsel__append_filter(struct perf_evsel *evsel, - const char *fmt, const char *filter) +static int evsel__append_filter(struct evsel *evsel, const char *fmt, const char *filter) { char *new_filter; if (evsel->filter == NULL) - return perf_evsel__set_filter(evsel, filter); + return evsel__set_filter(evsel, filter); if (asprintf(&new_filter, fmt, evsel->filter, filter) > 0) { free(evsel->filter); @@ -1194,29 +1659,40 @@ static int perf_evsel__append_filter(struct perf_evsel *evsel, return -1; } -int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter) +int evsel__append_tp_filter(struct evsel *evsel, const char *filter) { - return perf_evsel__append_filter(evsel, "(%s) && (%s)", filter); + return evsel__append_filter(evsel, "(%s) && (%s)", filter); } -int perf_evsel__append_addr_filter(struct perf_evsel *evsel, const char *filter) +int evsel__append_addr_filter(struct evsel *evsel, const char *filter) { - return perf_evsel__append_filter(evsel, "%s,%s", filter); + return evsel__append_filter(evsel, "%s,%s", filter); } -int perf_evsel__enable(struct perf_evsel *evsel) +/* Caller has to clear disabled after going through all CPUs. */ +int evsel__enable_cpu(struct evsel *evsel, int cpu_map_idx) { - int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, 0); + return perf_evsel__enable_cpu(&evsel->core, cpu_map_idx); +} + +int evsel__enable(struct evsel *evsel) +{ + int err = perf_evsel__enable(&evsel->core); if (!err) evsel->disabled = false; - return err; } -int perf_evsel__disable(struct perf_evsel *evsel) +/* Caller has to set disabled after going through all CPUs. */ +int evsel__disable_cpu(struct evsel *evsel, int cpu_map_idx) { - int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_DISABLE, 0); + return perf_evsel__disable_cpu(&evsel->core, cpu_map_idx); +} + +int evsel__disable(struct evsel *evsel) +{ + int err = perf_evsel__disable(&evsel->core); /* * We mark it disabled here so that tools that disable a event can * ignore events after they disable it. I.e. the ring buffer may have @@ -1229,132 +1705,153 @@ int perf_evsel__disable(struct perf_evsel *evsel) return err; } -int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) +void free_config_terms(struct list_head *config_terms) { - if (ncpus == 0 || nthreads == 0) - return 0; - - if (evsel->system_wide) - nthreads = 1; + struct evsel_config_term *term, *h; - evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); - if (evsel->sample_id == NULL) - return -ENOMEM; - - evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); - if (evsel->id == NULL) { - xyarray__delete(evsel->sample_id); - evsel->sample_id = NULL; - return -ENOMEM; + list_for_each_entry_safe(term, h, config_terms, list) { + list_del_init(&term->list); + if (term->free_str) + zfree(&term->val.str); + free(term); } - - return 0; } -static void perf_evsel__free_fd(struct perf_evsel *evsel) +static void evsel__free_config_terms(struct evsel *evsel) { - xyarray__delete(evsel->fd); - evsel->fd = NULL; + free_config_terms(&evsel->config_terms); } -static void perf_evsel__free_id(struct perf_evsel *evsel) -{ - xyarray__delete(evsel->sample_id); - evsel->sample_id = NULL; - zfree(&evsel->id); -} +static void (*evsel__priv_destructor)(void *priv); -static void perf_evsel__free_config_terms(struct perf_evsel *evsel) +void evsel__set_priv_destructor(void (*destructor)(void *priv)) { - struct perf_evsel_config_term *term, *h; + assert(evsel__priv_destructor == NULL); - list_for_each_entry_safe(term, h, &evsel->config_terms, list) { - list_del(&term->list); - free(term); - } + evsel__priv_destructor = destructor; } -void perf_evsel__close_fd(struct perf_evsel *evsel) +void evsel__exit(struct evsel *evsel) { - int cpu, thread; - - for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) - for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) { - close(FD(evsel, cpu, thread)); - FD(evsel, cpu, thread) = -1; - } -} - -void perf_evsel__exit(struct perf_evsel *evsel) -{ - assert(list_empty(&evsel->node)); + assert(list_empty(&evsel->core.node)); assert(evsel->evlist == NULL); - perf_evsel__free_fd(evsel); - perf_evsel__free_id(evsel); - perf_evsel__free_config_terms(evsel); + if (evsel__is_retire_lat(evsel)) + evsel__tpebs_close(evsel); + bpf_counter__destroy(evsel); + perf_bpf_filter__destroy(evsel); + evsel__free_counts(evsel); + perf_evsel__free_fd(&evsel->core); + perf_evsel__free_id(&evsel->core); + evsel__free_config_terms(evsel); cgroup__put(evsel->cgrp); - cpu_map__put(evsel->cpus); - cpu_map__put(evsel->own_cpus); - thread_map__put(evsel->threads); + perf_evsel__exit(&evsel->core); zfree(&evsel->group_name); zfree(&evsel->name); +#ifdef HAVE_LIBTRACEEVENT + zfree(&evsel->tp_sys); + zfree(&evsel->tp_name); +#endif + zfree(&evsel->filter); + zfree(&evsel->group_pmu_name); + zfree(&evsel->unit); + zfree(&evsel->metric_id); + evsel__zero_per_pkg(evsel); + hashmap__free(evsel->per_pkg_mask); + evsel->per_pkg_mask = NULL; + if (evsel__priv_destructor) + evsel__priv_destructor(evsel->priv); perf_evsel__object.fini(evsel); + if (evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME || + evsel__tool_event(evsel) == TOOL_PMU__EVENT_USER_TIME) + xyarray__delete(evsel->start_times); } -void perf_evsel__delete(struct perf_evsel *evsel) +void evsel__delete(struct evsel *evsel) { - perf_evsel__exit(evsel); + if (!evsel) + return; + + evsel__exit(evsel); free(evsel); } -void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread, - struct perf_counts_values *count) +void evsel__compute_deltas(struct evsel *evsel, int cpu_map_idx, int thread, + struct perf_counts_values *count) { struct perf_counts_values tmp; if (!evsel->prev_raw_counts) return; - if (cpu == -1) { - tmp = evsel->prev_raw_counts->aggr; - evsel->prev_raw_counts->aggr = *count; - } else { - tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread); - *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count; - } + tmp = *perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread); + *perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread) = *count; count->val = count->val - tmp.val; count->ena = count->ena - tmp.ena; count->run = count->run - tmp.run; } -void perf_counts_values__scale(struct perf_counts_values *count, - bool scale, s8 *pscaled) +static int evsel__read_one(struct evsel *evsel, int cpu_map_idx, int thread) { - s8 scaled = 0; + struct perf_counts_values *count = perf_counts(evsel->counts, cpu_map_idx, thread); - if (scale) { - if (count->run == 0) { - scaled = -1; - count->val = 0; - } else if (count->run < count->ena) { - scaled = 1; - count->val = (u64)((double) count->val * count->ena / count->run + 0.5); - } - } else - count->ena = count->run = 0; + return perf_evsel__read(&evsel->core, cpu_map_idx, thread, count); +} + +static void evsel__set_count(struct evsel *counter, int cpu_map_idx, int thread, + u64 val, u64 ena, u64 run, u64 lost) +{ + struct perf_counts_values *count; + + count = perf_counts(counter->counts, cpu_map_idx, thread); + + if (evsel__is_retire_lat(counter)) { + evsel__tpebs_read(counter, cpu_map_idx, thread); + perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, true); + return; + } - if (pscaled) - *pscaled = scaled; + count->val = val; + count->ena = ena; + count->run = run; + count->lost = lost; + + perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, true); +} + +static bool evsel__group_has_tpebs(struct evsel *leader) +{ + struct evsel *evsel; + + for_each_group_evsel(evsel, leader) { + if (evsel__is_retire_lat(evsel)) + return true; + } + return false; +} + +static u64 evsel__group_read_nr_members(struct evsel *leader) +{ + u64 nr = leader->core.nr_members; + struct evsel *evsel; + + for_each_group_evsel(evsel, leader) { + if (evsel__is_retire_lat(evsel)) + nr--; + } + return nr; } -static int perf_evsel__read_size(struct perf_evsel *evsel) +static u64 evsel__group_read_size(struct evsel *leader) { - u64 read_format = evsel->attr.read_format; + u64 read_format = leader->core.attr.read_format; int entry = sizeof(u64); /* value */ int size = 0; int nr = 1; + if (!evsel__group_has_tpebs(leader)) + return perf_evsel__read_size(&leader->core); + if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) size += sizeof(u64); @@ -1364,8 +1861,11 @@ static int perf_evsel__read_size(struct perf_evsel *evsel) if (read_format & PERF_FORMAT_ID) entry += sizeof(u64); + if (read_format & PERF_FORMAT_LOST) + entry += sizeof(u64); + if (read_format & PERF_FORMAT_GROUP) { - nr = evsel->nr_members; + nr = evsel__group_read_nr_members(leader); size += sizeof(u64); } @@ -1373,55 +1873,15 @@ static int perf_evsel__read_size(struct perf_evsel *evsel) return size; } -int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, - struct perf_counts_values *count) +static int evsel__process_group_data(struct evsel *leader, int cpu_map_idx, int thread, u64 *data) { - size_t size = perf_evsel__read_size(evsel); - - memset(count, 0, sizeof(*count)); - - if (FD(evsel, cpu, thread) < 0) - return -EINVAL; - - if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) - return -errno; - - return 0; -} - -static int -perf_evsel__read_one(struct perf_evsel *evsel, int cpu, int thread) -{ - struct perf_counts_values *count = perf_counts(evsel->counts, cpu, thread); - - return perf_evsel__read(evsel, cpu, thread, count); -} - -static void -perf_evsel__set_count(struct perf_evsel *counter, int cpu, int thread, - u64 val, u64 ena, u64 run) -{ - struct perf_counts_values *count; - - count = perf_counts(counter->counts, cpu, thread); - - count->val = val; - count->ena = ena; - count->run = run; - count->loaded = true; -} - -static int -perf_evsel__process_group_data(struct perf_evsel *leader, - int cpu, int thread, u64 *data) -{ - u64 read_format = leader->attr.read_format; + u64 read_format = leader->core.attr.read_format; struct sample_read_value *v; - u64 nr, ena = 0, run = 0, i; + u64 nr, ena = 0, run = 0, lost = 0; nr = *data++; - if (nr != (u64) leader->nr_members) + if (nr != evsel__group_read_nr_members(leader)) return -EINVAL; if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) @@ -1430,37 +1890,34 @@ perf_evsel__process_group_data(struct perf_evsel *leader, if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) run = *data++; - v = (struct sample_read_value *) data; - - perf_evsel__set_count(leader, cpu, thread, - v[0].value, ena, run); - - for (i = 1; i < nr; i++) { - struct perf_evsel *counter; + v = (void *)data; + sample_read_group__for_each(v, nr, read_format) { + struct evsel *counter; - counter = perf_evlist__id2evsel(leader->evlist, v[i].id); + counter = evlist__id2evsel(leader->evlist, v->id); if (!counter) return -EINVAL; - perf_evsel__set_count(counter, cpu, thread, - v[i].value, ena, run); + if (read_format & PERF_FORMAT_LOST) + lost = v->lost; + + evsel__set_count(counter, cpu_map_idx, thread, v->value, ena, run, lost); } return 0; } -static int -perf_evsel__read_group(struct perf_evsel *leader, int cpu, int thread) +static int evsel__read_group(struct evsel *leader, int cpu_map_idx, int thread) { struct perf_stat_evsel *ps = leader->stats; - u64 read_format = leader->attr.read_format; - int size = perf_evsel__read_size(leader); + u64 read_format = leader->core.attr.read_format; + int size = evsel__group_read_size(leader); u64 *data = ps->group_data; if (!(read_format & PERF_FORMAT_ID)) return -EINVAL; - if (!perf_evsel__is_group_leader(leader)) + if (!evsel__is_group_leader(leader)) return -EINVAL; if (!data) { @@ -1471,231 +1928,145 @@ perf_evsel__read_group(struct perf_evsel *leader, int cpu, int thread) ps->group_data = data; } - if (FD(leader, cpu, thread) < 0) + if (FD(leader, cpu_map_idx, thread) < 0) return -EINVAL; - if (readn(FD(leader, cpu, thread), data, size) <= 0) + if (readn(FD(leader, cpu_map_idx, thread), data, size) <= 0) return -errno; - return perf_evsel__process_group_data(leader, cpu, thread, data); + return evsel__process_group_data(leader, cpu_map_idx, thread, data); } -int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread) +bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) { - u64 read_format = evsel->attr.read_format; - if (read_format & PERF_FORMAT_GROUP) - return perf_evsel__read_group(evsel, cpu, thread); - else - return perf_evsel__read_one(evsel, cpu, thread); + u32 e_type = evsel->core.attr.type; + u64 e_config = evsel->core.attr.config; + + if (e_type == type && e_config == config) + return true; + if (type != PERF_TYPE_HARDWARE && type != PERF_TYPE_HW_CACHE) + return false; + if ((e_type == PERF_TYPE_HARDWARE || e_type == PERF_TYPE_HW_CACHE) && + perf_pmus__supports_extended_type()) + e_config &= PERF_HW_EVENT_MASK; + if (e_type == type && e_config == config) + return true; + if (type == PERF_TYPE_HARDWARE && evsel->pmu && evsel->pmu->is_core && + evsel->alternate_hw_config == config) + return true; + return false; +} + +int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread) +{ + if (evsel__is_tool(evsel)) + return evsel__tool_pmu_read(evsel, cpu_map_idx, thread); + + if (evsel__is_hwmon(evsel)) + return evsel__hwmon_pmu_read(evsel, cpu_map_idx, thread); + + if (evsel__is_drm(evsel)) + return evsel__drm_pmu_read(evsel, cpu_map_idx, thread); + + if (evsel__is_retire_lat(evsel)) + return evsel__tpebs_read(evsel, cpu_map_idx, thread); + + if (evsel->core.attr.read_format & PERF_FORMAT_GROUP) + return evsel__read_group(evsel, cpu_map_idx, thread); + + return evsel__read_one(evsel, cpu_map_idx, thread); } -int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, - int cpu, int thread, bool scale) +int __evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread, bool scale) { struct perf_counts_values count; size_t nv = scale ? 3 : 1; - if (FD(evsel, cpu, thread) < 0) + if (FD(evsel, cpu_map_idx, thread) < 0) return -EINVAL; - if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0) + if (evsel->counts == NULL && evsel__alloc_counts(evsel) < 0) return -ENOMEM; - if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0) + if (readn(FD(evsel, cpu_map_idx, thread), &count, nv * sizeof(u64)) <= 0) return -errno; - perf_evsel__compute_deltas(evsel, cpu, thread, &count); + evsel__compute_deltas(evsel, cpu_map_idx, thread, &count); perf_counts_values__scale(&count, scale, NULL); - *perf_counts(evsel->counts, cpu, thread) = count; + *perf_counts(evsel->counts, cpu_map_idx, thread) = count; return 0; } -static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) +static int evsel__match_other_cpu(struct evsel *evsel, struct evsel *other, + int cpu_map_idx) { - struct perf_evsel *leader = evsel->leader; - int fd; - - if (perf_evsel__is_group_leader(evsel)) - return -1; + struct perf_cpu cpu; - /* - * Leader must be already processed/open, - * if not it's a bug. - */ - BUG_ON(!leader->fd); - - fd = FD(leader, cpu, thread); - BUG_ON(fd == -1); - - return fd; + cpu = perf_cpu_map__cpu(evsel->core.cpus, cpu_map_idx); + return perf_cpu_map__idx(other->core.cpus, cpu); } -struct bit_names { - int bit; - const char *name; -}; - -static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits) +static int evsel__hybrid_group_cpu_map_idx(struct evsel *evsel, int cpu_map_idx) { - bool first_bit = true; - int i = 0; + struct evsel *leader = evsel__leader(evsel); - do { - if (value & bits[i].bit) { - buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name); - first_bit = false; - } - } while (bits[++i].name != NULL); -} + if ((evsel__is_hybrid(evsel) && !evsel__is_hybrid(leader)) || + (!evsel__is_hybrid(evsel) && evsel__is_hybrid(leader))) { + return evsel__match_other_cpu(evsel, leader, cpu_map_idx); + } -static void __p_sample_type(char *buf, size_t size, u64 value) -{ -#define bit_name(n) { PERF_SAMPLE_##n, #n } - struct bit_names bits[] = { - bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR), - bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU), - bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW), - bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), - bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), - bit_name(WEIGHT), bit_name(PHYS_ADDR), - { .name = NULL, } - }; -#undef bit_name - __p_bits(buf, size, value, bits); + return cpu_map_idx; } -static void __p_branch_sample_type(char *buf, size_t size, u64 value) +static int get_group_fd(struct evsel *evsel, int cpu_map_idx, int thread) { -#define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n } - struct bit_names bits[] = { - bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY), - bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL), - bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX), - bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP), - bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES), - { .name = NULL, } - }; -#undef bit_name - __p_bits(buf, size, value, bits); -} - -static void __p_read_format(char *buf, size_t size, u64 value) -{ -#define bit_name(n) { PERF_FORMAT_##n, #n } - struct bit_names bits[] = { - bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING), - bit_name(ID), bit_name(GROUP), - { .name = NULL, } - }; -#undef bit_name - __p_bits(buf, size, value, bits); -} - -#define BUF_SIZE 1024 - -#define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val)) -#define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val)) -#define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val)) -#define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val) -#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val) -#define p_read_format(val) __p_read_format(buf, BUF_SIZE, val) - -#define PRINT_ATTRn(_n, _f, _p) \ -do { \ - if (attr->_f) { \ - _p(attr->_f); \ - ret += attr__fprintf(fp, _n, buf, priv);\ - } \ -} while (0) + struct evsel *leader = evsel__leader(evsel); + int fd; -#define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p) + if (!evsel->supported || evsel__is_group_leader(evsel)) + return -1; -int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, - attr__fprintf_f attr__fprintf, void *priv) -{ - char buf[BUF_SIZE]; - int ret = 0; + /* + * Leader must be already processed/open, + * if not it's a bug. + */ + BUG_ON(!leader->core.fd); - PRINT_ATTRf(type, p_unsigned); - PRINT_ATTRf(size, p_unsigned); - PRINT_ATTRf(config, p_hex); - PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned); - PRINT_ATTRf(sample_type, p_sample_type); - PRINT_ATTRf(read_format, p_read_format); - - PRINT_ATTRf(disabled, p_unsigned); - PRINT_ATTRf(inherit, p_unsigned); - PRINT_ATTRf(pinned, p_unsigned); - PRINT_ATTRf(exclusive, p_unsigned); - PRINT_ATTRf(exclude_user, p_unsigned); - PRINT_ATTRf(exclude_kernel, p_unsigned); - PRINT_ATTRf(exclude_hv, p_unsigned); - PRINT_ATTRf(exclude_idle, p_unsigned); - PRINT_ATTRf(mmap, p_unsigned); - PRINT_ATTRf(comm, p_unsigned); - PRINT_ATTRf(freq, p_unsigned); - PRINT_ATTRf(inherit_stat, p_unsigned); - PRINT_ATTRf(enable_on_exec, p_unsigned); - PRINT_ATTRf(task, p_unsigned); - PRINT_ATTRf(watermark, p_unsigned); - PRINT_ATTRf(precise_ip, p_unsigned); - PRINT_ATTRf(mmap_data, p_unsigned); - PRINT_ATTRf(sample_id_all, p_unsigned); - PRINT_ATTRf(exclude_host, p_unsigned); - PRINT_ATTRf(exclude_guest, p_unsigned); - PRINT_ATTRf(exclude_callchain_kernel, p_unsigned); - PRINT_ATTRf(exclude_callchain_user, p_unsigned); - PRINT_ATTRf(mmap2, p_unsigned); - PRINT_ATTRf(comm_exec, p_unsigned); - PRINT_ATTRf(use_clockid, p_unsigned); - PRINT_ATTRf(context_switch, p_unsigned); - PRINT_ATTRf(write_backward, p_unsigned); - PRINT_ATTRf(namespaces, p_unsigned); - - PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned); - PRINT_ATTRf(bp_type, p_unsigned); - PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex); - PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex); - PRINT_ATTRf(branch_sample_type, p_branch_sample_type); - PRINT_ATTRf(sample_regs_user, p_hex); - PRINT_ATTRf(sample_stack_user, p_unsigned); - PRINT_ATTRf(clockid, p_signed); - PRINT_ATTRf(sample_regs_intr, p_hex); - PRINT_ATTRf(aux_watermark, p_unsigned); - PRINT_ATTRf(sample_max_stack, p_unsigned); + cpu_map_idx = evsel__hybrid_group_cpu_map_idx(evsel, cpu_map_idx); + if (cpu_map_idx == -1) + return -1; - return ret; -} + fd = FD(leader, cpu_map_idx, thread); + BUG_ON(fd == -1 && leader->supported); -static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, - void *priv __maybe_unused) -{ - return fprintf(fp, " %-32s %s\n", name, val); + /* + * When the leader has been skipped, return -2 to distinguish from no + * group leader case. + */ + return fd == -1 ? -2 : fd; } -static void perf_evsel__remove_fd(struct perf_evsel *pos, - int nr_cpus, int nr_threads, - int thread_idx) +static void evsel__remove_fd(struct evsel *pos, int nr_cpus, int nr_threads, int thread_idx) { for (int cpu = 0; cpu < nr_cpus; cpu++) for (int thread = thread_idx; thread < nr_threads - 1; thread++) FD(pos, cpu, thread) = FD(pos, cpu, thread + 1); } -static int update_fds(struct perf_evsel *evsel, - int nr_cpus, int cpu_idx, +static int update_fds(struct evsel *evsel, + int nr_cpus, int cpu_map_idx, int nr_threads, int thread_idx) { - struct perf_evsel *pos; + struct evsel *pos; - if (cpu_idx >= nr_cpus || thread_idx >= nr_threads) + if (cpu_map_idx >= nr_cpus || thread_idx >= nr_threads) return -EINVAL; evlist__for_each_entry(evsel->evlist, pos) { - nr_cpus = pos != evsel ? nr_cpus : cpu_idx; + nr_cpus = pos != evsel ? nr_cpus : cpu_map_idx; - perf_evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx); + evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx); /* * Since fds for next evsel has not been created, @@ -1707,18 +2078,18 @@ static int update_fds(struct perf_evsel *evsel, return 0; } -static bool ignore_missing_thread(struct perf_evsel *evsel, - int nr_cpus, int cpu, - struct thread_map *threads, - int thread, int err) +static bool evsel__ignore_missing_thread(struct evsel *evsel, + int nr_cpus, int cpu_map_idx, + struct perf_thread_map *threads, + int thread, int err) { - pid_t ignore_pid = thread_map__pid(threads, thread); + pid_t ignore_pid = perf_thread_map__pid(threads, thread); if (!evsel->ignore_missing_thread) return false; /* The system wide setup does not work with threads. */ - if (evsel->system_wide) + if (evsel->core.system_wide) return false; /* The -ESRCH is perf event syscall errno for pid's not found. */ @@ -1733,7 +2104,7 @@ static bool ignore_missing_thread(struct perf_evsel *evsel, * We should remove fd for missing_thread first * because thread_map__remove() will decrease threads->nr. */ - if (update_fds(evsel, nr_cpus, cpu, threads->nr, thread)) + if (update_fds(evsel, nr_cpus, cpu_map_idx, threads->nr, thread)) return false; if (thread_map__remove(threads, thread)) @@ -1744,22 +2115,62 @@ static bool ignore_missing_thread(struct perf_evsel *evsel, return true; } -int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, - struct thread_map *threads) +static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, + void *priv __maybe_unused) +{ + return fprintf(fp, " %-32s %s\n", name, val); +} + +static void display_attr(struct perf_event_attr *attr) +{ + if (verbose >= 2 || debug_peo_args) { + fprintf(stderr, "%.60s\n", graph_dotted_line); + fprintf(stderr, "perf_event_attr:\n"); + perf_event_attr__fprintf(stderr, attr, __open_attr__fprintf, NULL); + fprintf(stderr, "%.60s\n", graph_dotted_line); + } +} + +bool evsel__precise_ip_fallback(struct evsel *evsel) +{ + /* Do not try less precise if not requested. */ + if (!evsel->precise_max) + return false; + + /* + * We tried all the precise_ip values, and it's + * still failing, so leave it to standard fallback. + */ + if (!evsel->core.attr.precise_ip) { + evsel->core.attr.precise_ip = evsel->precise_ip_original; + return false; + } + + if (!evsel->precise_ip_original) + evsel->precise_ip_original = evsel->core.attr.precise_ip; + + evsel->core.attr.precise_ip--; + pr_debug2_peo("decreasing precise_ip by one (%d)\n", evsel->core.attr.precise_ip); + display_attr(&evsel->core.attr); + return true; +} + +static struct perf_cpu_map *empty_cpu_map; +static struct perf_thread_map *empty_thread_map; + +static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, + struct perf_thread_map *threads) { - int cpu, thread, nthreads; - unsigned long flags = PERF_FLAG_FD_CLOEXEC; - int pid = -1, err; - enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; + int ret = 0; + int nthreads = perf_thread_map__nr(threads); - if (perf_missing_features.write_backward && evsel->attr.write_backward) + if ((perf_missing_features.write_backward && evsel->core.attr.write_backward) || + (perf_missing_features.aux_output && evsel->core.attr.aux_output)) return -EINVAL; if (cpus == NULL) { - static struct cpu_map *empty_cpu_map; - if (empty_cpu_map == NULL) { - empty_cpu_map = cpu_map__dummy_new(); + empty_cpu_map = perf_cpu_map__new_any_cpu(); if (empty_cpu_map == NULL) return -ENOMEM; } @@ -1768,8 +2179,6 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, } if (threads == NULL) { - static struct thread_map *empty_thread_map; - if (empty_thread_map == NULL) { empty_thread_map = thread_map__new_by_tid(-1); if (empty_thread_map == NULL) @@ -1779,92 +2188,580 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, threads = empty_thread_map; } - if (evsel->system_wide) - nthreads = 1; - else - nthreads = threads->nr; - - if (evsel->fd == NULL && - perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) + if (evsel->core.fd == NULL && + perf_evsel__alloc_fd(&evsel->core, perf_cpu_map__nr(cpus), nthreads) < 0) return -ENOMEM; - if (evsel->cgrp) { - flags |= PERF_FLAG_PID_CGROUP; - pid = evsel->cgrp->fd; - } + if (evsel__is_tool(evsel)) + ret = evsel__tool_pmu_prepare_open(evsel, cpus, nthreads); -fallback_missing_features: + evsel->open_flags = PERF_FLAG_FD_CLOEXEC; + if (evsel->cgrp) + evsel->open_flags |= PERF_FLAG_PID_CGROUP; + + return ret; +} + +static void evsel__disable_missing_features(struct evsel *evsel) +{ + if (perf_missing_features.defer_callchain && evsel->core.attr.defer_callchain) + evsel->core.attr.defer_callchain = 0; + if (perf_missing_features.defer_callchain && evsel->core.attr.defer_output) + evsel->core.attr.defer_output = 0; + if (perf_missing_features.inherit_sample_read && evsel->core.attr.inherit && + (evsel->core.attr.sample_type & PERF_SAMPLE_READ)) + evsel->core.attr.inherit = 0; + if (perf_missing_features.branch_counters) + evsel->core.attr.branch_sample_type &= ~PERF_SAMPLE_BRANCH_COUNTERS; + if (perf_missing_features.read_lost) + evsel->core.attr.read_format &= ~PERF_FORMAT_LOST; + if (perf_missing_features.weight_struct) { + evsel__set_sample_bit(evsel, WEIGHT); + evsel__reset_sample_bit(evsel, WEIGHT_STRUCT); + } if (perf_missing_features.clockid_wrong) - evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */ + evsel->core.attr.clockid = CLOCK_MONOTONIC; /* should always work */ if (perf_missing_features.clockid) { - evsel->attr.use_clockid = 0; - evsel->attr.clockid = 0; + evsel->core.attr.use_clockid = 0; + evsel->core.attr.clockid = 0; } if (perf_missing_features.cloexec) - flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; + evsel->open_flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; if (perf_missing_features.mmap2) - evsel->attr.mmap2 = 0; - if (perf_missing_features.exclude_guest) - evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; + evsel->core.attr.mmap2 = 0; + if (evsel->pmu && evsel->pmu->missing_features.exclude_guest) + evsel->core.attr.exclude_guest = evsel->core.attr.exclude_host = 0; if (perf_missing_features.lbr_flags) - evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | + evsel->core.attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | PERF_SAMPLE_BRANCH_NO_CYCLES); - if (perf_missing_features.group_read && evsel->attr.inherit) - evsel->attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID); -retry_sample_id: + if (perf_missing_features.group_read && evsel->core.attr.inherit) + evsel->core.attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID); + if (perf_missing_features.ksymbol) + evsel->core.attr.ksymbol = 0; + if (perf_missing_features.bpf) + evsel->core.attr.bpf_event = 0; + if (perf_missing_features.branch_hw_idx) + evsel->core.attr.branch_sample_type &= ~PERF_SAMPLE_BRANCH_HW_INDEX; if (perf_missing_features.sample_id_all) - evsel->attr.sample_id_all = 0; + evsel->core.attr.sample_id_all = 0; +} - if (verbose >= 2) { - fprintf(stderr, "%.60s\n", graph_dotted_line); - fprintf(stderr, "perf_event_attr:\n"); - perf_event_attr__fprintf(stderr, &evsel->attr, __open_attr__fprintf, NULL); - fprintf(stderr, "%.60s\n", graph_dotted_line); +int evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, + struct perf_thread_map *threads) +{ + int err; + + err = __evsel__prepare_open(evsel, cpus, threads); + if (err) + return err; + + evsel__disable_missing_features(evsel); + + return err; +} + +static bool __has_attr_feature(struct perf_event_attr *attr, + struct perf_cpu cpu, unsigned long flags) +{ + int fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, cpu.cpu, + /*group_fd=*/-1, flags); + close(fd); + + if (fd < 0) { + attr->exclude_kernel = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, cpu.cpu, + /*group_fd=*/-1, flags); + close(fd); + } + + if (fd < 0) { + attr->exclude_hv = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, cpu.cpu, + /*group_fd=*/-1, flags); + close(fd); + } + + if (fd < 0) { + attr->exclude_guest = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, cpu.cpu, + /*group_fd=*/-1, flags); + close(fd); + } + + attr->exclude_kernel = 0; + attr->exclude_guest = 0; + attr->exclude_hv = 0; + + return fd >= 0; +} + +static bool has_attr_feature(struct perf_event_attr *attr, unsigned long flags) +{ + struct perf_cpu cpu = {.cpu = -1}; + + return __has_attr_feature(attr, cpu, flags); +} + +static void evsel__detect_missing_pmu_features(struct evsel *evsel) +{ + struct perf_event_attr attr = { + .type = evsel->core.attr.type, + .config = evsel->core.attr.config, + .disabled = 1, + }; + struct perf_pmu *pmu = evsel->pmu; + int old_errno; + + old_errno = errno; + + if (pmu == NULL) + pmu = evsel->pmu = evsel__find_pmu(evsel); + + if (pmu == NULL || pmu->missing_features.checked) + goto out; + + /* + * Must probe features in the order they were added to the + * perf_event_attr interface. These are kernel core limitation but + * specific to PMUs with branch stack. So we can detect with the given + * hardware event and stop on the first one succeeded. + */ + + /* Please add new feature detection here. */ + + attr.exclude_guest = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + pmu->missing_features.exclude_guest = true; + pr_debug2("switching off exclude_guest for PMU %s\n", pmu->name); + +found: + pmu->missing_features.checked = true; +out: + errno = old_errno; +} + +static void evsel__detect_missing_brstack_features(struct evsel *evsel) +{ + static bool detection_done = false; + struct perf_event_attr attr = { + .type = evsel->core.attr.type, + .config = evsel->core.attr.config, + .disabled = 1, + .sample_type = PERF_SAMPLE_BRANCH_STACK, + .sample_period = 1000, + }; + int old_errno; + + if (detection_done) + return; + + old_errno = errno; + + /* + * Must probe features in the order they were added to the + * perf_event_attr interface. These are PMU specific limitation + * so we can detect with the given hardware event and stop on the + * first one succeeded. + */ + + /* Please add new feature detection here. */ + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_COUNTERS; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.branch_counters = true; + pr_debug2("switching off branch counters support\n"); + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_HW_INDEX; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.branch_hw_idx = true; + pr_debug2("switching off branch HW index support\n"); + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_NO_CYCLES | PERF_SAMPLE_BRANCH_NO_FLAGS; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.lbr_flags = true; + pr_debug2_peo("switching off branch sample type no (cycles/flags)\n"); + +found: + detection_done = true; + errno = old_errno; +} + +static bool evsel__probe_aux_action(struct evsel *evsel, struct perf_cpu cpu) +{ + struct perf_event_attr attr = evsel->core.attr; + int old_errno = errno; + + attr.disabled = 1; + attr.aux_start_paused = 1; + + if (__has_attr_feature(&attr, cpu, /*flags=*/0)) { + errno = old_errno; + return true; + } + + /* + * EOPNOTSUPP means the kernel supports the feature but the PMU does + * not, so keep that distinction if possible. + */ + if (errno != EOPNOTSUPP) + errno = old_errno; + + return false; +} + +static void evsel__detect_missing_aux_action_feature(struct evsel *evsel, struct perf_cpu cpu) +{ + static bool detection_done; + struct evsel *leader; + + /* + * Don't bother probing aux_action if it is not being used or has been + * probed before. + */ + if (!evsel->core.attr.aux_action || detection_done) + return; + + detection_done = true; + + /* + * The leader is an AUX area event. If it has failed, assume the feature + * is not supported. + */ + leader = evsel__leader(evsel); + if (evsel == leader) { + perf_missing_features.aux_action = true; + return; + } + + /* + * AUX area event with aux_action must have been opened successfully + * already, so feature is supported. + */ + if (leader->core.attr.aux_action) + return; + + if (!evsel__probe_aux_action(leader, cpu)) + perf_missing_features.aux_action = true; +} + +static bool evsel__detect_missing_features(struct evsel *evsel, struct perf_cpu cpu) +{ + static bool detection_done = false; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_TASK_CLOCK, + .disabled = 1, + }; + int old_errno; + + evsel__detect_missing_aux_action_feature(evsel, cpu); + + evsel__detect_missing_pmu_features(evsel); + + if (evsel__has_br_stack(evsel)) + evsel__detect_missing_brstack_features(evsel); + + if (detection_done) + goto check; + + old_errno = errno; + + /* + * Must probe features in the order they were added to the + * perf_event_attr interface. These are kernel core limitation + * not PMU-specific so we can detect with a software event and + * stop on the first one succeeded. + */ + + /* Please add new feature detection here. */ + + attr.defer_callchain = true; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.defer_callchain = true; + pr_debug2("switching off deferred callchain support\n"); + attr.defer_callchain = false; + + attr.inherit = true; + attr.sample_type = PERF_SAMPLE_READ | PERF_SAMPLE_TID; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.inherit_sample_read = true; + pr_debug2("Using PERF_SAMPLE_READ / :S modifier is not compatible with inherit, falling back to no-inherit.\n"); + attr.inherit = false; + attr.sample_type = 0; + + attr.read_format = PERF_FORMAT_LOST; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.read_lost = true; + pr_debug2("switching off PERF_FORMAT_LOST support\n"); + attr.read_format = 0; + + attr.sample_type = PERF_SAMPLE_WEIGHT_STRUCT; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.weight_struct = true; + pr_debug2("switching off weight struct support\n"); + attr.sample_type = 0; + + attr.sample_type = PERF_SAMPLE_CODE_PAGE_SIZE; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.code_page_size = true; + pr_debug2_peo("Kernel has no PERF_SAMPLE_CODE_PAGE_SIZE support\n"); + attr.sample_type = 0; + + attr.sample_type = PERF_SAMPLE_DATA_PAGE_SIZE; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.data_page_size = true; + pr_debug2_peo("Kernel has no PERF_SAMPLE_DATA_PAGE_SIZE support\n"); + attr.sample_type = 0; + + attr.cgroup = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.cgroup = true; + pr_debug2_peo("Kernel has no cgroup sampling support\n"); + attr.cgroup = 0; + + attr.aux_output = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.aux_output = true; + pr_debug2_peo("Kernel has no attr.aux_output support\n"); + attr.aux_output = 0; + + attr.bpf_event = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.bpf = true; + pr_debug2_peo("switching off bpf_event\n"); + attr.bpf_event = 0; + + attr.ksymbol = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.ksymbol = true; + pr_debug2_peo("switching off ksymbol\n"); + attr.ksymbol = 0; + + attr.write_backward = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.write_backward = true; + pr_debug2_peo("switching off write_backward\n"); + attr.write_backward = 0; + + attr.use_clockid = 1; + attr.clockid = CLOCK_MONOTONIC; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.clockid = true; + pr_debug2_peo("switching off clockid\n"); + attr.use_clockid = 0; + attr.clockid = 0; + + if (has_attr_feature(&attr, /*flags=*/PERF_FLAG_FD_CLOEXEC)) + goto found; + perf_missing_features.cloexec = true; + pr_debug2_peo("switching off cloexec flag\n"); + + attr.mmap2 = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.mmap2 = true; + pr_debug2_peo("switching off mmap2\n"); + attr.mmap2 = 0; + + /* set this unconditionally? */ + perf_missing_features.sample_id_all = true; + pr_debug2_peo("switching off sample_id_all\n"); + + attr.inherit = 1; + attr.read_format = PERF_FORMAT_GROUP; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.group_read = true; + pr_debug2_peo("switching off group read\n"); + attr.inherit = 0; + attr.read_format = 0; + +found: + detection_done = true; + errno = old_errno; + +check: + if ((evsel->core.attr.defer_callchain || evsel->core.attr.defer_output) && + perf_missing_features.defer_callchain) + return true; + + if (evsel->core.attr.inherit && + (evsel->core.attr.sample_type & PERF_SAMPLE_READ) && + perf_missing_features.inherit_sample_read) + return true; + + if ((evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS) && + perf_missing_features.branch_counters) + return true; + + if ((evsel->core.attr.read_format & PERF_FORMAT_LOST) && + perf_missing_features.read_lost) + return true; + + if ((evsel->core.attr.sample_type & PERF_SAMPLE_WEIGHT_STRUCT) && + perf_missing_features.weight_struct) + return true; + + if (evsel->core.attr.use_clockid && evsel->core.attr.clockid != CLOCK_MONOTONIC && + !perf_missing_features.clockid) { + perf_missing_features.clockid_wrong = true; + return true; } - for (cpu = 0; cpu < cpus->nr; cpu++) { + if (evsel->core.attr.use_clockid && perf_missing_features.clockid) + return true; + + if ((evsel->open_flags & PERF_FLAG_FD_CLOEXEC) && + perf_missing_features.cloexec) + return true; + + if (evsel->core.attr.mmap2 && perf_missing_features.mmap2) + return true; + + if ((evsel->core.attr.branch_sample_type & (PERF_SAMPLE_BRANCH_NO_FLAGS | + PERF_SAMPLE_BRANCH_NO_CYCLES)) && + perf_missing_features.lbr_flags) + return true; + + if (evsel->core.attr.inherit && (evsel->core.attr.read_format & PERF_FORMAT_GROUP) && + perf_missing_features.group_read) + return true; + + if (evsel->core.attr.ksymbol && perf_missing_features.ksymbol) + return true; + + if (evsel->core.attr.bpf_event && perf_missing_features.bpf) + return true; + + if ((evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX) && + perf_missing_features.branch_hw_idx) + return true; + + if (evsel->core.attr.sample_id_all && perf_missing_features.sample_id_all) + return true; + + return false; +} + +static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, + struct perf_thread_map *threads, + int start_cpu_map_idx, int end_cpu_map_idx) +{ + int idx, thread, nthreads; + int pid = -1, err, old_errno; + enum rlimit_action set_rlimit = NO_CHANGE; + struct perf_cpu cpu; + + if (evsel__is_retire_lat(evsel)) { + err = evsel__tpebs_open(evsel); + goto out; + } + + err = __evsel__prepare_open(evsel, cpus, threads); + if (err) + goto out; + + if (cpus == NULL) + cpus = empty_cpu_map; + + if (threads == NULL) + threads = empty_thread_map; + + nthreads = perf_thread_map__nr(threads); + + if (evsel->cgrp) + pid = evsel->cgrp->fd; + +fallback_missing_features: + evsel__disable_missing_features(evsel); + + pr_debug3("Opening: %s\n", evsel__name(evsel)); + display_attr(&evsel->core.attr); + + if (evsel__is_tool(evsel)) { + err = evsel__tool_pmu_open(evsel, threads, + start_cpu_map_idx, + end_cpu_map_idx); + goto out; + } + if (evsel__is_hwmon(evsel)) { + err = evsel__hwmon_pmu_open(evsel, threads, + start_cpu_map_idx, + end_cpu_map_idx); + goto out; + } + if (evsel__is_drm(evsel)) { + err = evsel__drm_pmu_open(evsel, threads, + start_cpu_map_idx, + end_cpu_map_idx); + goto out; + } + + for (idx = start_cpu_map_idx; idx < end_cpu_map_idx; idx++) { + cpu = perf_cpu_map__cpu(cpus, idx); for (thread = 0; thread < nthreads; thread++) { int fd, group_fd; +retry_open: + if (thread >= nthreads) + break; - if (!evsel->cgrp && !evsel->system_wide) - pid = thread_map__pid(threads, thread); + if (!evsel->cgrp && !evsel->core.system_wide) + pid = perf_thread_map__pid(threads, thread); - group_fd = get_group_fd(evsel, cpu, thread); -retry_open: - pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", - pid, cpus->map[cpu], group_fd, flags); + group_fd = get_group_fd(evsel, idx, thread); - test_attr__ready(); + if (group_fd == -2) { + pr_debug("broken group leader for %s\n", evsel->name); + err = -EINVAL; + goto out_close; + } - fd = sys_perf_event_open(&evsel->attr, pid, cpus->map[cpu], - group_fd, flags); + /* Debug message used by test scripts */ + pr_debug2_peo("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", + pid, cpu.cpu, group_fd, evsel->open_flags); - FD(evsel, cpu, thread) = fd; + fd = sys_perf_event_open(&evsel->core.attr, pid, cpu.cpu, + group_fd, evsel->open_flags); + + FD(evsel, idx, thread) = fd; if (fd < 0) { err = -errno; - if (ignore_missing_thread(evsel, cpus->nr, cpu, threads, thread, err)) { - /* - * We just removed 1 thread, so take a step - * back on thread index and lower the upper - * nthreads limit. - */ - nthreads--; - thread--; - - /* ... and pretend like nothing have happened. */ - err = 0; - continue; - } - - pr_debug2("\nsys_perf_event_open failed, error %d\n", + pr_debug2_peo("\nsys_perf_event_open failed, error %d\n", err); goto try_fallback; } - pr_debug2(" = %d\n", fd); + bpf_counter__install_pe(evsel, idx, fd); + + if (unlikely(test_attr__enabled())) { + test_attr__open(&evsel->core.attr, pid, cpu, + fd, group_fd, evsel->open_flags); + } + + /* Debug message used by test scripts */ + pr_debug2_peo(" = %d\n", fd); if (evsel->bpf_fd >= 0) { int evt_fd = fd; @@ -1885,8 +2782,7 @@ retry_open: /* * If we succeeded but had to kill clockid, fail and - * have perf_evsel__open_strerror() print us a nice - * error. + * have evsel__open_strerror() print us a nice error. */ if (perf_missing_features.clockid || perf_missing_features.clockid_wrong) { @@ -1896,125 +2792,100 @@ retry_open: } } - return 0; + err = 0; + goto out; try_fallback: + if (evsel__ignore_missing_thread(evsel, perf_cpu_map__nr(cpus), + idx, threads, thread, err)) { + /* We just removed 1 thread, so lower the upper nthreads limit. */ + nthreads--; + + /* ... and pretend like nothing have happened. */ + err = 0; + goto retry_open; + } /* * perf stat needs between 5 and 22 fds per CPU. When we run out * of them try to increase the limits. */ - if (err == -EMFILE && set_rlimit < INCREASED_MAX) { - struct rlimit l; - int old_errno = errno; - - if (getrlimit(RLIMIT_NOFILE, &l) == 0) { - if (set_rlimit == NO_CHANGE) - l.rlim_cur = l.rlim_max; - else { - l.rlim_cur = l.rlim_max + 1000; - l.rlim_max = l.rlim_cur; - } - if (setrlimit(RLIMIT_NOFILE, &l) == 0) { - set_rlimit++; - errno = old_errno; - goto retry_open; - } - } - errno = old_errno; - } - - if (err != -EINVAL || cpu > 0 || thread > 0) - goto out_close; + if (err == -EMFILE && rlimit__increase_nofile(&set_rlimit)) + goto retry_open; - /* - * Must probe features in the order they were added to the - * perf_event_attr interface. - */ - if (!perf_missing_features.write_backward && evsel->attr.write_backward) { - perf_missing_features.write_backward = true; - pr_debug2("switching off write_backward\n"); - goto out_close; - } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) { - perf_missing_features.clockid_wrong = true; - pr_debug2("switching off clockid\n"); - goto fallback_missing_features; - } else if (!perf_missing_features.clockid && evsel->attr.use_clockid) { - perf_missing_features.clockid = true; - pr_debug2("switching off use_clockid\n"); - goto fallback_missing_features; - } else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) { - perf_missing_features.cloexec = true; - pr_debug2("switching off cloexec flag\n"); - goto fallback_missing_features; - } else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) { - perf_missing_features.mmap2 = true; - pr_debug2("switching off mmap2\n"); - goto fallback_missing_features; - } else if (!perf_missing_features.exclude_guest && - (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { - perf_missing_features.exclude_guest = true; - pr_debug2("switching off exclude_guest, exclude_host\n"); - goto fallback_missing_features; - } else if (!perf_missing_features.sample_id_all) { - perf_missing_features.sample_id_all = true; - pr_debug2("switching off sample_id_all\n"); - goto retry_sample_id; - } else if (!perf_missing_features.lbr_flags && - (evsel->attr.branch_sample_type & - (PERF_SAMPLE_BRANCH_NO_CYCLES | - PERF_SAMPLE_BRANCH_NO_FLAGS))) { - perf_missing_features.lbr_flags = true; - pr_debug2("switching off branch sample type no (cycles/flags)\n"); + if (err == -EINVAL && evsel__detect_missing_features(evsel, cpu)) goto fallback_missing_features; - } else if (!perf_missing_features.group_read && - evsel->attr.inherit && - (evsel->attr.read_format & PERF_FORMAT_GROUP) && - perf_evsel__is_group_leader(evsel)) { - perf_missing_features.group_read = true; - pr_debug2("switching off group read\n"); - goto fallback_missing_features; - } + + if (evsel__precise_ip_fallback(evsel)) + goto retry_open; + out_close: if (err) threads->err_thread = thread; + old_errno = errno; do { while (--thread >= 0) { - close(FD(evsel, cpu, thread)); - FD(evsel, cpu, thread) = -1; + if (FD(evsel, idx, thread) >= 0) + close(FD(evsel, idx, thread)); + FD(evsel, idx, thread) = -1; } thread = nthreads; - } while (--cpu >= 0); + } while (--idx >= 0); + errno = old_errno; +out: + if (err) + evsel->supported = false; return err; } -void perf_evsel__close(struct perf_evsel *evsel) +int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, + struct perf_thread_map *threads) { - if (evsel->fd == NULL) - return; + return evsel__open_cpu(evsel, cpus, threads, 0, perf_cpu_map__nr(cpus)); +} - perf_evsel__close_fd(evsel); - perf_evsel__free_fd(evsel); +void evsel__close(struct evsel *evsel) +{ + if (evsel__is_retire_lat(evsel)) + evsel__tpebs_close(evsel); + perf_evsel__close(&evsel->core); + perf_evsel__free_id(&evsel->core); +} + +int evsel__open_per_cpu_and_thread(struct evsel *evsel, + struct perf_cpu_map *cpus, int cpu_map_idx, + struct perf_thread_map *threads) +{ + if (cpu_map_idx == -1) + return evsel__open_cpu(evsel, cpus, threads, 0, perf_cpu_map__nr(cpus)); + + return evsel__open_cpu(evsel, cpus, threads, cpu_map_idx, cpu_map_idx + 1); } -int perf_evsel__open_per_cpu(struct perf_evsel *evsel, - struct cpu_map *cpus) +int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx) { - return perf_evsel__open(evsel, cpus, NULL); + struct perf_thread_map *threads = thread_map__new_by_tid(-1); + int ret = evsel__open_per_cpu_and_thread(evsel, cpus, cpu_map_idx, threads); + + perf_thread_map__put(threads); + return ret; } -int perf_evsel__open_per_thread(struct perf_evsel *evsel, - struct thread_map *threads) +int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads) { - return perf_evsel__open(evsel, NULL, threads); + struct perf_cpu_map *cpus = perf_cpu_map__new_any_cpu(); + int ret = evsel__open_per_cpu_and_thread(evsel, cpus, -1, threads); + + perf_cpu_map__put(cpus); + return ret; } -static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, +static int perf_evsel__parse_id_sample(const struct evsel *evsel, const union perf_event *event, struct perf_sample *sample) { - u64 type = evsel->attr.sample_type; - const u64 *array = event->sample.array; + u64 type = evsel->core.attr.sample_type; + const __u64 *array = event->sample.array; bool swapped = evsel->needs_swap; union u64_swap u; @@ -2099,12 +2970,126 @@ perf_event__check_size(union perf_event *event, unsigned int sample_size) return 0; } -int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, - struct perf_sample *data) +static void perf_parse_sample_weight(struct perf_sample *data, const __u64 *array, u64 type) +{ + union perf_sample_weight weight; + + weight.full = *array; + if (type & PERF_SAMPLE_WEIGHT_STRUCT) { + data->weight = weight.var1_dw; + data->ins_lat = weight.var2_w; + data->weight3 = weight.var3_w; + } else { + data->weight = weight.full; + } +} + +u64 evsel__bitfield_swap_branch_flags(u64 value) +{ + u64 new_val = 0; + + /* + * branch_flags + * union { + * u64 values; + * struct { + * mispred:1 //target mispredicted + * predicted:1 //target predicted + * in_tx:1 //in transaction + * abort:1 //transaction abort + * cycles:16 //cycle count to last branch + * type:4 //branch type + * spec:2 //branch speculation info + * new_type:4 //additional branch type + * priv:3 //privilege level + * reserved:31 + * } + * } + * + * Avoid bswap64() the entire branch_flag.value, + * as it has variable bit-field sizes. Instead the + * macro takes the bit-field position/size, + * swaps it based on the host endianness. + */ + if (host_is_bigendian()) { + new_val = bitfield_swap(value, 0, 1); + new_val |= bitfield_swap(value, 1, 1); + new_val |= bitfield_swap(value, 2, 1); + new_val |= bitfield_swap(value, 3, 1); + new_val |= bitfield_swap(value, 4, 16); + new_val |= bitfield_swap(value, 20, 4); + new_val |= bitfield_swap(value, 24, 2); + new_val |= bitfield_swap(value, 26, 4); + new_val |= bitfield_swap(value, 30, 3); + new_val |= bitfield_swap(value, 33, 31); + } else { + new_val = bitfield_swap(value, 63, 1); + new_val |= bitfield_swap(value, 62, 1); + new_val |= bitfield_swap(value, 61, 1); + new_val |= bitfield_swap(value, 60, 1); + new_val |= bitfield_swap(value, 44, 16); + new_val |= bitfield_swap(value, 40, 4); + new_val |= bitfield_swap(value, 38, 2); + new_val |= bitfield_swap(value, 34, 4); + new_val |= bitfield_swap(value, 31, 3); + new_val |= bitfield_swap(value, 0, 31); + } + + return new_val; +} + +static inline bool evsel__has_branch_counters(const struct evsel *evsel) +{ + struct evsel *leader = evsel__leader(evsel); + + /* The branch counters feature only supports group */ + if (!leader || !evsel->evlist) + return false; + + if (evsel->evlist->nr_br_cntr < 0) + evlist__update_br_cntr(evsel->evlist); + + if (leader->br_cntr_nr > 0) + return true; + + return false; +} + +static int __set_offcpu_sample(struct perf_sample *data) +{ + u64 *array = data->raw_data; + u32 max_size = data->raw_size, *p32; + const void *endp = (void *)array + max_size; + + if (array == NULL) + return -EFAULT; + + OVERFLOW_CHECK_u64(array); + p32 = (void *)array++; + data->pid = p32[0]; + data->tid = p32[1]; + + OVERFLOW_CHECK_u64(array); + data->period = *array++; + + OVERFLOW_CHECK_u64(array); + data->callchain = (struct ip_callchain *)array++; + OVERFLOW_CHECK(array, data->callchain->nr * sizeof(u64), max_size); + data->ip = data->callchain->ips[1]; + array += data->callchain->nr; + + OVERFLOW_CHECK_u64(array); + data->cgroup = *array; + + return 0; +} + +int evsel__parse_sample(struct evsel *evsel, union perf_event *event, + struct perf_sample *data) { - u64 type = evsel->attr.sample_type; + u64 type = evsel->core.attr.sample_type; bool swapped = evsel->needs_swap; - const u64 *array; + const __u64 *array; u16 max_size = event->header.size; const void *endp = (void *)event + max_size; u64 sz; @@ -2118,14 +3103,28 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, memset(data, 0, sizeof(*data)); data->cpu = data->pid = data->tid = -1; data->stream_id = data->id = data->time = -1ULL; - data->period = evsel->attr.sample_period; + data->period = evsel->core.attr.sample_period; data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; data->misc = event->header.misc; - data->id = -1ULL; data->data_src = PERF_MEM_DATA_SRC_NONE; + data->vcpu = -1; + + if (event->header.type == PERF_RECORD_CALLCHAIN_DEFERRED) { + const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); + + data->callchain = (struct ip_callchain *)&event->callchain_deferred.nr; + if (data->callchain->nr > max_callchain_nr) + return -EFAULT; + + data->deferred_cookie = event->callchain_deferred.cookie; + + if (evsel->core.attr.sample_id_all) + perf_evsel__parse_id_sample(evsel, event, data); + return 0; + } if (event->header.type != PERF_RECORD_SAMPLE) { - if (!evsel->attr.sample_id_all) + if (!evsel->core.attr.sample_id_all) return 0; return perf_evsel__parse_id_sample(evsel, event, data); } @@ -2198,7 +3197,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, } if (type & PERF_SAMPLE_READ) { - u64 read_format = evsel->attr.read_format; + u64 read_format = evsel->core.attr.read_format; OVERFLOW_CHECK_u64(array); if (read_format & PERF_FORMAT_GROUP) @@ -2227,8 +3226,8 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, if (data->read.group.nr > max_group_nr) return -EFAULT; - sz = data->read.group.nr * - sizeof(struct sample_read_value); + + sz = data->read.group.nr * sample_read_value_size(read_format); OVERFLOW_CHECK(array, sz, max_size); data->read.group.values = (struct sample_read_value *)array; @@ -2237,17 +3236,36 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, OVERFLOW_CHECK_u64(array); data->read.one.id = *array; array++; + + if (read_format & PERF_FORMAT_LOST) { + OVERFLOW_CHECK_u64(array); + data->read.one.lost = *array; + array++; + } } } - if (evsel__has_callchain(evsel)) { + if (type & PERF_SAMPLE_CALLCHAIN) { const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); + u64 callchain_nr; OVERFLOW_CHECK_u64(array); data->callchain = (struct ip_callchain *)array++; - if (data->callchain->nr > max_callchain_nr) + callchain_nr = data->callchain->nr; + if (callchain_nr > max_callchain_nr) return -EFAULT; - sz = data->callchain->nr * sizeof(u64); + sz = callchain_nr * sizeof(u64); + /* + * Save the cookie for the deferred user callchain. The last 2 + * entries in the callchain should be the context marker and the + * cookie. The cookie will be used to match PERF_RECORD_ + * CALLCHAIN_DEFERRED later. + */ + if (evsel->core.attr.defer_callchain && callchain_nr >= 2 && + data->callchain->ips[callchain_nr - 2] == PERF_CONTEXT_USER_DEFERRED) { + data->deferred_cookie = data->callchain->ips[callchain_nr - 1]; + data->deferred_callchain = true; + } OVERFLOW_CHECK(array, sz, max_size); array = (void *)array + sz; } @@ -2259,7 +3277,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, /* * Undo swap of u64, then swap on individual u32s, * get the size of the raw area and undo all of the - * swap. The pevent interface handles endianity by + * swap. The pevent interface handles endianness by * itself. */ if (swapped) { @@ -2286,29 +3304,69 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, if (type & PERF_SAMPLE_BRANCH_STACK) { const u64 max_branch_nr = UINT64_MAX / sizeof(struct branch_entry); + struct branch_entry *e; + unsigned int i; OVERFLOW_CHECK_u64(array); data->branch_stack = (struct branch_stack *)array++; if (data->branch_stack->nr > max_branch_nr) return -EFAULT; + sz = data->branch_stack->nr * sizeof(struct branch_entry); + if (evsel__has_branch_hw_idx(evsel)) { + sz += sizeof(u64); + e = &data->branch_stack->entries[0]; + } else { + data->no_hw_idx = true; + /* + * if the PERF_SAMPLE_BRANCH_HW_INDEX is not applied, + * only nr and entries[] will be output by kernel. + */ + e = (struct branch_entry *)&data->branch_stack->hw_idx; + } + + if (swapped) { + /* + * struct branch_flag does not have endian + * specific bit field definition. And bswap + * will not resolve the issue, since these + * are bit fields. + * + * evsel__bitfield_swap_branch_flags() uses a + * bitfield_swap macro to swap the bit position + * based on the host endians. + */ + for (i = 0; i < data->branch_stack->nr; i++, e++) + e->flags.value = evsel__bitfield_swap_branch_flags(e->flags.value); + } + OVERFLOW_CHECK(array, sz, max_size); array = (void *)array + sz; + + if (evsel__has_branch_counters(evsel)) { + data->branch_stack_cntr = (u64 *)array; + sz = data->branch_stack->nr * sizeof(u64); + + OVERFLOW_CHECK(array, sz, max_size); + array = (void *)array + sz; + } } if (type & PERF_SAMPLE_REGS_USER) { + struct regs_dump *regs = perf_sample__user_regs(data); + OVERFLOW_CHECK_u64(array); - data->user_regs.abi = *array; + regs->abi = *array; array++; - if (data->user_regs.abi) { - u64 mask = evsel->attr.sample_regs_user; + if (regs->abi) { + u64 mask = evsel->core.attr.sample_regs_user; - sz = hweight_long(mask) * sizeof(u64); + sz = hweight64(mask) * sizeof(u64); OVERFLOW_CHECK(array, sz, max_size); - data->user_regs.mask = mask; - data->user_regs.regs = (u64 *)array; + regs->mask = mask; + regs->regs = (u64 *)array; array = (void *)array + sz; } } @@ -2334,9 +3392,9 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, } } - if (type & PERF_SAMPLE_WEIGHT) { + if (type & PERF_SAMPLE_WEIGHT_TYPE) { OVERFLOW_CHECK_u64(array); - data->weight = *array; + perf_parse_sample_weight(data, array, type); array++; } @@ -2352,19 +3410,20 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, array++; } - data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE; if (type & PERF_SAMPLE_REGS_INTR) { + struct regs_dump *regs = perf_sample__intr_regs(data); + OVERFLOW_CHECK_u64(array); - data->intr_regs.abi = *array; + regs->abi = *array; array++; - if (data->intr_regs.abi != PERF_SAMPLE_REGS_ABI_NONE) { - u64 mask = evsel->attr.sample_regs_intr; + if (regs->abi != PERF_SAMPLE_REGS_ABI_NONE) { + u64 mask = evsel->core.attr.sample_regs_intr; - sz = hweight_long(mask) * sizeof(u64); + sz = hweight64(mask) * sizeof(u64); OVERFLOW_CHECK(array, sz, max_size); - data->intr_regs.mask = mask; - data->intr_regs.regs = (u64 *)array; + regs->mask = mask; + regs->regs = (u64 *)array; array = (void *)array + sz; } } @@ -2375,15 +3434,48 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, array++; } + data->cgroup = 0; + if (type & PERF_SAMPLE_CGROUP) { + data->cgroup = *array; + array++; + } + + data->data_page_size = 0; + if (type & PERF_SAMPLE_DATA_PAGE_SIZE) { + data->data_page_size = *array; + array++; + } + + data->code_page_size = 0; + if (type & PERF_SAMPLE_CODE_PAGE_SIZE) { + data->code_page_size = *array; + array++; + } + + if (type & PERF_SAMPLE_AUX) { + OVERFLOW_CHECK_u64(array); + sz = *array++; + + OVERFLOW_CHECK(array, sz, max_size); + /* Undo swap of data */ + if (swapped) + mem_bswap_64((char *)array, sz); + data->aux_sample.size = sz; + data->aux_sample.data = (char *)array; + array = (void *)array + sz; + } + + if (evsel__is_offcpu_event(evsel)) + return __set_offcpu_sample(data); + return 0; } -int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel, - union perf_event *event, - u64 *timestamp) +int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event, + u64 *timestamp) { - u64 type = evsel->attr.sample_type; - const u64 *array; + u64 type = evsel->core.attr.sample_type; + const __u64 *array; if (!(type & PERF_SAMPLE_TIME)) return -1; @@ -2393,7 +3485,7 @@ int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel, .time = -1ULL, }; - if (!evsel->attr.sample_id_all) + if (!evsel->core.attr.sample_id_all) return -1; if (perf_evsel__parse_id_sample(evsel, event, &data)) return -1; @@ -2422,292 +3514,50 @@ int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel, return 0; } -size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, - u64 read_format) +u16 evsel__id_hdr_size(const struct evsel *evsel) { - size_t sz, result = sizeof(struct sample_event); + u64 sample_type = evsel->core.attr.sample_type; + u16 size = 0; - if (type & PERF_SAMPLE_IDENTIFIER) - result += sizeof(u64); - - if (type & PERF_SAMPLE_IP) - result += sizeof(u64); - - if (type & PERF_SAMPLE_TID) - result += sizeof(u64); - - if (type & PERF_SAMPLE_TIME) - result += sizeof(u64); - - if (type & PERF_SAMPLE_ADDR) - result += sizeof(u64); - - if (type & PERF_SAMPLE_ID) - result += sizeof(u64); - - if (type & PERF_SAMPLE_STREAM_ID) - result += sizeof(u64); - - if (type & PERF_SAMPLE_CPU) - result += sizeof(u64); - - if (type & PERF_SAMPLE_PERIOD) - result += sizeof(u64); - - if (type & PERF_SAMPLE_READ) { - result += sizeof(u64); - if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) - result += sizeof(u64); - if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) - result += sizeof(u64); - /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ - if (read_format & PERF_FORMAT_GROUP) { - sz = sample->read.group.nr * - sizeof(struct sample_read_value); - result += sz; - } else { - result += sizeof(u64); - } - } - - if (type & PERF_SAMPLE_CALLCHAIN) { - sz = (sample->callchain->nr + 1) * sizeof(u64); - result += sz; - } - - if (type & PERF_SAMPLE_RAW) { - result += sizeof(u32); - result += sample->raw_size; - } - - if (type & PERF_SAMPLE_BRANCH_STACK) { - sz = sample->branch_stack->nr * sizeof(struct branch_entry); - sz += sizeof(u64); - result += sz; - } - - if (type & PERF_SAMPLE_REGS_USER) { - if (sample->user_regs.abi) { - result += sizeof(u64); - sz = hweight_long(sample->user_regs.mask) * sizeof(u64); - result += sz; - } else { - result += sizeof(u64); - } - } - - if (type & PERF_SAMPLE_STACK_USER) { - sz = sample->user_stack.size; - result += sizeof(u64); - if (sz) { - result += sz; - result += sizeof(u64); - } - } + if (sample_type & PERF_SAMPLE_TID) + size += sizeof(u64); - if (type & PERF_SAMPLE_WEIGHT) - result += sizeof(u64); + if (sample_type & PERF_SAMPLE_TIME) + size += sizeof(u64); - if (type & PERF_SAMPLE_DATA_SRC) - result += sizeof(u64); + if (sample_type & PERF_SAMPLE_ID) + size += sizeof(u64); - if (type & PERF_SAMPLE_TRANSACTION) - result += sizeof(u64); + if (sample_type & PERF_SAMPLE_STREAM_ID) + size += sizeof(u64); - if (type & PERF_SAMPLE_REGS_INTR) { - if (sample->intr_regs.abi) { - result += sizeof(u64); - sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); - result += sz; - } else { - result += sizeof(u64); - } - } + if (sample_type & PERF_SAMPLE_CPU) + size += sizeof(u64); - if (type & PERF_SAMPLE_PHYS_ADDR) - result += sizeof(u64); + if (sample_type & PERF_SAMPLE_IDENTIFIER) + size += sizeof(u64); - return result; + return size; } -int perf_event__synthesize_sample(union perf_event *event, u64 type, - u64 read_format, - const struct perf_sample *sample) +#ifdef HAVE_LIBTRACEEVENT +struct tep_format_field *evsel__field(struct evsel *evsel, const char *name) { - u64 *array; - size_t sz; - /* - * used for cross-endian analysis. See git commit 65014ab3 - * for why this goofiness is needed. - */ - union u64_swap u; - - array = event->sample.array; - - if (type & PERF_SAMPLE_IDENTIFIER) { - *array = sample->id; - array++; - } - - if (type & PERF_SAMPLE_IP) { - *array = sample->ip; - array++; - } - - if (type & PERF_SAMPLE_TID) { - u.val32[0] = sample->pid; - u.val32[1] = sample->tid; - *array = u.val64; - array++; - } - - if (type & PERF_SAMPLE_TIME) { - *array = sample->time; - array++; - } - - if (type & PERF_SAMPLE_ADDR) { - *array = sample->addr; - array++; - } - - if (type & PERF_SAMPLE_ID) { - *array = sample->id; - array++; - } - - if (type & PERF_SAMPLE_STREAM_ID) { - *array = sample->stream_id; - array++; - } - - if (type & PERF_SAMPLE_CPU) { - u.val32[0] = sample->cpu; - u.val32[1] = 0; - *array = u.val64; - array++; - } - - if (type & PERF_SAMPLE_PERIOD) { - *array = sample->period; - array++; - } - - if (type & PERF_SAMPLE_READ) { - if (read_format & PERF_FORMAT_GROUP) - *array = sample->read.group.nr; - else - *array = sample->read.one.value; - array++; - - if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { - *array = sample->read.time_enabled; - array++; - } - - if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { - *array = sample->read.time_running; - array++; - } - - /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ - if (read_format & PERF_FORMAT_GROUP) { - sz = sample->read.group.nr * - sizeof(struct sample_read_value); - memcpy(array, sample->read.group.values, sz); - array = (void *)array + sz; - } else { - *array = sample->read.one.id; - array++; - } - } + struct tep_event *tp_format = evsel__tp_format(evsel); - if (type & PERF_SAMPLE_CALLCHAIN) { - sz = (sample->callchain->nr + 1) * sizeof(u64); - memcpy(array, sample->callchain, sz); - array = (void *)array + sz; - } - - if (type & PERF_SAMPLE_RAW) { - u.val32[0] = sample->raw_size; - *array = u.val64; - array = (void *)array + sizeof(u32); - - memcpy(array, sample->raw_data, sample->raw_size); - array = (void *)array + sample->raw_size; - } - - if (type & PERF_SAMPLE_BRANCH_STACK) { - sz = sample->branch_stack->nr * sizeof(struct branch_entry); - sz += sizeof(u64); - memcpy(array, sample->branch_stack, sz); - array = (void *)array + sz; - } - - if (type & PERF_SAMPLE_REGS_USER) { - if (sample->user_regs.abi) { - *array++ = sample->user_regs.abi; - sz = hweight_long(sample->user_regs.mask) * sizeof(u64); - memcpy(array, sample->user_regs.regs, sz); - array = (void *)array + sz; - } else { - *array++ = 0; - } - } - - if (type & PERF_SAMPLE_STACK_USER) { - sz = sample->user_stack.size; - *array++ = sz; - if (sz) { - memcpy(array, sample->user_stack.data, sz); - array = (void *)array + sz; - *array++ = sz; - } - } - - if (type & PERF_SAMPLE_WEIGHT) { - *array = sample->weight; - array++; - } - - if (type & PERF_SAMPLE_DATA_SRC) { - *array = sample->data_src; - array++; - } - - if (type & PERF_SAMPLE_TRANSACTION) { - *array = sample->transaction; - array++; - } - - if (type & PERF_SAMPLE_REGS_INTR) { - if (sample->intr_regs.abi) { - *array++ = sample->intr_regs.abi; - sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); - memcpy(array, sample->intr_regs.regs, sz); - array = (void *)array + sz; - } else { - *array++ = 0; - } - } - - if (type & PERF_SAMPLE_PHYS_ADDR) { - *array = sample->phys_addr; - array++; - } - - return 0; + return tp_format ? tep_find_field(tp_format, name) : NULL; } -struct tep_format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) +struct tep_format_field *evsel__common_field(struct evsel *evsel, const char *name) { - return tep_find_field(evsel->tp_format, name); + struct tep_event *tp_format = evsel__tp_format(evsel); + + return tp_format ? tep_find_common_field(tp_format, name) : NULL; } -void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, - const char *name) +void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char *name) { - struct tep_format_field *field = perf_evsel__field(evsel, name); + struct tep_format_field *field = evsel__field(evsel, name); int offset; if (!field) @@ -2718,6 +3568,8 @@ void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, if (field->flags & TEP_FIELD_IS_DYNAMIC) { offset = *(int *)(sample->raw_data + field->offset); offset &= 0xffff; + if (tep_field_is_relative(field->flags)) + offset += field->offset + field->size; } return sample->raw_data + offset; @@ -2762,65 +3614,132 @@ u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sam return 0; } -u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, - const char *name) +u64 evsel__intval(struct evsel *evsel, struct perf_sample *sample, const char *name) { - struct tep_format_field *field = perf_evsel__field(evsel, name); + struct tep_format_field *field = evsel__field(evsel, name); - if (!field) - return 0; + return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; +} + +u64 evsel__intval_common(struct evsel *evsel, struct perf_sample *sample, const char *name) +{ + struct tep_format_field *field = evsel__common_field(evsel, name); return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; } -bool perf_evsel__fallback(struct perf_evsel *evsel, int err, - char *msg, size_t msgsize) +char evsel__taskstate(struct evsel *evsel, struct perf_sample *sample, const char *name) +{ + static struct tep_format_field *prev_state_field; + static const char *states; + struct tep_format_field *field; + unsigned long long val; + unsigned int bit; + char state = '?'; /* '?' denotes unknown task state */ + + field = evsel__field(evsel, name); + + if (!field) + return state; + + if (!states || field != prev_state_field) { + states = parse_task_states(field); + if (!states) + return state; + prev_state_field = field; + } + + /* + * Note since the kernel exposes TASK_REPORT_MAX to userspace + * to denote the 'preempted' state, we might as welll report + * 'R' for this case, which make senses to users as well. + * + * We can change this if we have a good reason in the future. + */ + val = evsel__intval(evsel, sample, name); + bit = val ? ffs(val) : 0; + state = (!bit || bit > strlen(states)) ? 'R' : states[bit-1]; + return state; +} +#endif + +bool evsel__fallback(struct evsel *evsel, struct target *target, int err, + char *msg, size_t msgsize) { int paranoid; if ((err == ENOENT || err == ENXIO || err == ENODEV) && - evsel->attr.type == PERF_TYPE_HARDWARE && - evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) { + evsel->core.attr.type == PERF_TYPE_HARDWARE && + evsel->core.attr.config == PERF_COUNT_HW_CPU_CYCLES) { /* - * If it's cycles then fall back to hrtimer based - * cpu-clock-tick sw counter, which is always available even if - * no PMU support. + * If it's cycles then fall back to hrtimer based cpu-clock sw + * counter, which is always available even if no PMU support. * * PPC returns ENXIO until 2.6.37 (behavior changed with commit * b0a873e). */ - scnprintf(msg, msgsize, "%s", -"The cycles event is not supported, trying to fall back to cpu-clock-ticks"); - - evsel->attr.type = PERF_TYPE_SOFTWARE; - evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK; + evsel->core.attr.type = PERF_TYPE_SOFTWARE; + evsel->core.attr.config = target__has_cpu(target) + ? PERF_COUNT_SW_CPU_CLOCK + : PERF_COUNT_SW_TASK_CLOCK; + scnprintf(msg, msgsize, + "The cycles event is not supported, trying to fall back to %s", + target__has_cpu(target) ? "cpu-clock" : "task-clock"); zfree(&evsel->name); return true; - } else if (err == EACCES && !evsel->attr.exclude_kernel && + } else if (err == EACCES && !evsel->core.attr.exclude_kernel && (paranoid = perf_event_paranoid()) > 1) { - const char *name = perf_evsel__name(evsel); + const char *name = evsel__name(evsel); char *new_name; const char *sep = ":"; + /* If event has exclude user then don't exclude kernel. */ + if (evsel->core.attr.exclude_user) + goto no_fallback; + /* Is there already the separator in the name. */ if (strchr(name, '/') || - strchr(name, ':')) + (strchr(name, ':') && !evsel->is_libpfm_event)) sep = ""; if (asprintf(&new_name, "%s%su", name, sep) < 0) - return false; + goto no_fallback; - if (evsel->name) - free(evsel->name); + free(evsel->name); evsel->name = new_name; - scnprintf(msg, msgsize, -"kernel.perf_event_paranoid=%d, trying to fall back to excluding kernel samples", paranoid); - evsel->attr.exclude_kernel = 1; + scnprintf(msg, msgsize, "kernel.perf_event_paranoid=%d, trying " + "to fall back to excluding kernel and hypervisor " + " samples", paranoid); + evsel->core.attr.exclude_kernel = 1; + evsel->core.attr.exclude_hv = 1; return true; - } + } else if (err == EOPNOTSUPP && !evsel->core.attr.exclude_guest && + !evsel->exclude_GH) { + const char *name = evsel__name(evsel); + char *new_name; + const char *sep = ":"; + /* Is there already the separator in the name. */ + if (strchr(name, '/') || + (strchr(name, ':') && !evsel->is_libpfm_event)) + sep = ""; + + if (asprintf(&new_name, "%s%sH", name, sep) < 0) + goto no_fallback; + + free(evsel->name); + evsel->name = new_name; + /* Apple M1 requires exclude_guest */ + scnprintf(msg, msgsize, "Trying to fall back to excluding guest samples"); + evsel->core.attr.exclude_guest = 1; + + return true; + } +no_fallback: + scnprintf(msg, msgsize, "No fallback found for '%s' for error %d", + evsel__name(evsel), err); return false; } @@ -2860,39 +3779,130 @@ static bool find_process(const char *name) return ret ? false : true; } -int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, - int err, char *msg, size_t size) +static int dump_perf_event_processes(char *msg, size_t size) { - char sbuf[STRERR_BUFSIZE]; + DIR *proc_dir; + struct dirent *proc_entry; int printed = 0; + proc_dir = opendir(procfs__mountpoint()); + if (!proc_dir) + return 0; + + /* Walk through the /proc directory. */ + while ((proc_entry = readdir(proc_dir)) != NULL) { + char buf[256]; + DIR *fd_dir; + struct dirent *fd_entry; + int fd_dir_fd; + + if (proc_entry->d_type != DT_DIR || + !isdigit(proc_entry->d_name[0]) || + strlen(proc_entry->d_name) > sizeof(buf) - 4) + continue; + + scnprintf(buf, sizeof(buf), "%s/fd", proc_entry->d_name); + fd_dir_fd = openat(dirfd(proc_dir), buf, O_DIRECTORY); + if (fd_dir_fd == -1) + continue; + fd_dir = fdopendir(fd_dir_fd); + if (!fd_dir) { + close(fd_dir_fd); + continue; + } + while ((fd_entry = readdir(fd_dir)) != NULL) { + ssize_t link_size; + + if (fd_entry->d_type != DT_LNK) + continue; + link_size = readlinkat(fd_dir_fd, fd_entry->d_name, buf, sizeof(buf)); + if (link_size < 0) + continue; + /* Take care as readlink doesn't null terminate the string. */ + if (!strncmp(buf, "anon_inode:[perf_event]", link_size)) { + int cmdline_fd; + ssize_t cmdline_size; + + scnprintf(buf, sizeof(buf), "%s/cmdline", proc_entry->d_name); + cmdline_fd = openat(dirfd(proc_dir), buf, O_RDONLY); + if (cmdline_fd == -1) + continue; + cmdline_size = read(cmdline_fd, buf, sizeof(buf) - 1); + close(cmdline_fd); + if (cmdline_size < 0) + continue; + buf[cmdline_size] = '\0'; + for (ssize_t i = 0; i < cmdline_size; i++) { + if (buf[i] == '\0') + buf[i] = ' '; + } + + if (printed == 0) + printed += scnprintf(msg, size, "Possible processes:\n"); + + printed += scnprintf(msg + printed, size - printed, + "%s %s\n", proc_entry->d_name, buf); + break; + } + } + closedir(fd_dir); + } + closedir(proc_dir); + return printed; +} + +int __weak arch_evsel__open_strerror(struct evsel *evsel __maybe_unused, + int err __maybe_unused, + char *msg __maybe_unused, + size_t size __maybe_unused) +{ + return 0; +} + +int evsel__open_strerror(struct evsel *evsel, struct target *target, + int err, char *msg, size_t size) +{ + struct perf_pmu *pmu; + char sbuf[STRERR_BUFSIZE]; + int printed = 0, enforced = 0; + int ret; + switch (err) { case EPERM: case EACCES: + printed += scnprintf(msg + printed, size - printed, + "Access to performance monitoring and observability operations is limited.\n"); + + if (!sysfs__read_int("fs/selinux/enforce", &enforced)) { + if (enforced) { + printed += scnprintf(msg + printed, size - printed, + "Enforced MAC policy settings (SELinux) can limit access to performance\n" + "monitoring and observability operations. Inspect system audit records for\n" + "more perf_event access control information and adjusting the policy.\n"); + } + } + if (err == EPERM) - printed = scnprintf(msg, size, - "No permission to enable %s event.\n\n", - perf_evsel__name(evsel)); - - return scnprintf(msg + printed, size - printed, - "You may not have permission to collect %sstats.\n\n" - "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n" - "which controls use of the performance events system by\n" - "unprivileged users (without CAP_SYS_ADMIN).\n\n" - "The current value is %d:\n\n" + printed += scnprintf(msg, size, + "No permission to enable %s event.\n\n", evsel__name(evsel)); + + return printed + scnprintf(msg + printed, size - printed, + "Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open\n" + "access to performance monitoring and observability operations for processes\n" + "without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability.\n" + "More information can be found at 'Perf events and tool security' document:\n" + "https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html\n" + "perf_event_paranoid setting is %d:\n" " -1: Allow use of (almost) all events by all users\n" " Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK\n" - ">= 0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN\n" - " Disallow raw tracepoint access by users without CAP_SYS_ADMIN\n" - ">= 1: Disallow CPU event access by users without CAP_SYS_ADMIN\n" - ">= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN\n\n" - "To make this setting permanent, edit /etc/sysctl.conf too, e.g.:\n\n" - " kernel.perf_event_paranoid = -1\n" , - target->system_wide ? "system-wide " : "", - perf_event_paranoid()); + ">= 0: Disallow raw and ftrace function tracepoint access\n" + ">= 1: Disallow CPU event access\n" + ">= 2: Disallow kernel profiling\n" + "To make the adjusted perf_event_paranoid setting permanent preserve it\n" + "in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>)", + perf_event_paranoid()); case ENOENT: - return scnprintf(msg, size, "The %s event is not supported.", - perf_evsel__name(evsel)); + return scnprintf(msg, size, "The %s event is not supported.", evsel__name(evsel)); case EMFILE: return scnprintf(msg, size, "%s", "Too many events are opened.\n" @@ -2913,62 +3923,114 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, "No such device - did you specify an out-of-range profile CPU?"); break; case EOPNOTSUPP: - if (evsel->attr.sample_period != 0) + if (evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK) + return scnprintf(msg, size, + "%s: PMU Hardware or event type doesn't support branch stack sampling.", + evsel__name(evsel)); + if (evsel->core.attr.aux_output) + return scnprintf(msg, size, + "%s: PMU Hardware doesn't support 'aux_output' feature", + evsel__name(evsel)); + if (evsel->core.attr.aux_action) + return scnprintf(msg, size, + "%s: PMU Hardware doesn't support 'aux_action' feature", + evsel__name(evsel)); + if (evsel->core.attr.sample_period != 0) return scnprintf(msg, size, "%s: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'", - perf_evsel__name(evsel)); - if (evsel->attr.precise_ip) + evsel__name(evsel)); + if (evsel->core.attr.precise_ip) return scnprintf(msg, size, "%s", "\'precise\' request may not be supported. Try removing 'p' modifier."); #if defined(__i386__) || defined(__x86_64__) - if (evsel->attr.type == PERF_TYPE_HARDWARE) + if (evsel->core.attr.type == PERF_TYPE_HARDWARE) return scnprintf(msg, size, "%s", "No hardware sampling interrupt available.\n"); #endif + if (!target__has_cpu(target)) + return scnprintf(msg, size, + "Unsupported event (%s) in per-thread mode, enable system wide with '-a'.", + evsel__name(evsel)); break; case EBUSY: if (find_process("oprofiled")) return scnprintf(msg, size, "The PMU counters are busy/taken by another profiler.\n" "We found oprofile daemon running, please stop it and try again."); + printed += scnprintf( + msg, size, + "The PMU %s counters are busy and in use by another process.\n", + evsel->pmu ? evsel->pmu->name : ""); + return printed + dump_perf_event_processes(msg + printed, size - printed); break; case EINVAL: - if (evsel->attr.write_backward && perf_missing_features.write_backward) + if (evsel->core.attr.sample_type & PERF_SAMPLE_CODE_PAGE_SIZE && perf_missing_features.code_page_size) + return scnprintf(msg, size, "Asking for the code page size isn't supported by this kernel."); + if (evsel->core.attr.sample_type & PERF_SAMPLE_DATA_PAGE_SIZE && perf_missing_features.data_page_size) + return scnprintf(msg, size, "Asking for the data page size isn't supported by this kernel."); + if (evsel->core.attr.write_backward && perf_missing_features.write_backward) return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel."); if (perf_missing_features.clockid) return scnprintf(msg, size, "clockid feature not supported."); if (perf_missing_features.clockid_wrong) return scnprintf(msg, size, "wrong clockid (%d).", clockid); + if (perf_missing_features.aux_action) + return scnprintf(msg, size, "The 'aux_action' feature is not supported, update the kernel."); + if (perf_missing_features.aux_output) + return scnprintf(msg, size, "The 'aux_output' feature is not supported, update the kernel."); + pmu = evsel__find_pmu(evsel); + if (!pmu->is_core && !target__has_cpu(target)) + return scnprintf(msg, size, + "Invalid event (%s) in per-thread mode, enable system wide with '-a'.", + evsel__name(evsel)); + break; + case ENODATA: + return scnprintf(msg, size, "Cannot collect data source with the load latency event alone. " + "Please add an auxiliary event in front of the load latency event."); default: break; } + ret = arch_evsel__open_strerror(evsel, err, msg, size); + if (ret) + return ret; + return scnprintf(msg, size, "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" - "/bin/dmesg | grep -i perf may provide additional information.\n", - err, str_error_r(err, sbuf, sizeof(sbuf)), - perf_evsel__name(evsel)); + "\"dmesg | grep -i perf\" may provide additional information.\n", + err, str_error_r(err, sbuf, sizeof(sbuf)), evsel__name(evsel)); } -struct perf_env *perf_evsel__env(struct perf_evsel *evsel) +struct perf_session *evsel__session(struct evsel *evsel) { - if (evsel && evsel->evlist) - return evsel->evlist->env; - return NULL; + return evsel && evsel->evlist ? evsel->evlist->session : NULL; } -static int store_evsel_ids(struct perf_evsel *evsel, struct perf_evlist *evlist) +struct perf_env *evsel__env(struct evsel *evsel) { - int cpu, thread; + struct perf_session *session = evsel__session(evsel); + + return session ? perf_session__env(session) : NULL; +} + +static int store_evsel_ids(struct evsel *evsel, struct evlist *evlist) +{ + int cpu_map_idx, thread; + + if (evsel__is_retire_lat(evsel)) + return 0; - for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { - for (thread = 0; thread < xyarray__max_y(evsel->fd); + if (perf_pmu__kind(evsel->pmu) != PERF_PMU_KIND_PE) + return 0; + + for (cpu_map_idx = 0; cpu_map_idx < xyarray__max_x(evsel->core.fd); cpu_map_idx++) { + for (thread = 0; thread < xyarray__max_y(evsel->core.fd); thread++) { - int fd = FD(evsel, cpu, thread); + int fd = FD(evsel, cpu_map_idx, thread); - if (perf_evlist__id_add_fd(evlist, evsel, - cpu, thread, fd) < 0) + if (perf_evlist__id_add_fd(&evlist->core, &evsel->core, + cpu_map_idx, thread, fd) < 0) return -1; } } @@ -2976,13 +4038,241 @@ static int store_evsel_ids(struct perf_evsel *evsel, struct perf_evlist *evlist) return 0; } -int perf_evsel__store_ids(struct perf_evsel *evsel, struct perf_evlist *evlist) +int evsel__store_ids(struct evsel *evsel, struct evlist *evlist) { - struct cpu_map *cpus = evsel->cpus; - struct thread_map *threads = evsel->threads; + struct perf_cpu_map *cpus = evsel->core.cpus; + struct perf_thread_map *threads = evsel->core.threads; - if (perf_evsel__alloc_id(evsel, cpus->nr, threads->nr)) + if (perf_evsel__alloc_id(&evsel->core, perf_cpu_map__nr(cpus), threads->nr)) return -ENOMEM; return store_evsel_ids(evsel, evlist); } + +void evsel__zero_per_pkg(struct evsel *evsel) +{ + struct hashmap_entry *cur; + size_t bkt; + + if (evsel->per_pkg_mask) { + hashmap__for_each_entry(evsel->per_pkg_mask, cur, bkt) + zfree(&cur->pkey); + + hashmap__clear(evsel->per_pkg_mask); + } +} + +/** + * evsel__is_hybrid - does the evsel have a known PMU that is hybrid. Note, this + * will be false on hybrid systems for hardware and legacy + * cache events. + */ +bool evsel__is_hybrid(const struct evsel *evsel) +{ + if (!evsel->core.is_pmu_core) + return false; + + return perf_pmus__num_core_pmus() > 1; +} + +struct evsel *evsel__leader(const struct evsel *evsel) +{ + if (evsel->core.leader == NULL) + return NULL; + return container_of(evsel->core.leader, struct evsel, core); +} + +bool evsel__has_leader(struct evsel *evsel, struct evsel *leader) +{ + return evsel->core.leader == &leader->core; +} + +bool evsel__is_leader(struct evsel *evsel) +{ + return evsel__has_leader(evsel, evsel); +} + +void evsel__set_leader(struct evsel *evsel, struct evsel *leader) +{ + evsel->core.leader = &leader->core; +} + +int evsel__source_count(const struct evsel *evsel) +{ + struct evsel *pos; + int count = 0; + + evlist__for_each_entry(evsel->evlist, pos) { + if (pos->metric_leader == evsel) + count++; + } + return count; +} + +bool __weak arch_evsel__must_be_in_group(const struct evsel *evsel __maybe_unused) +{ + return false; +} + +/* + * Remove an event from a given group (leader). + * Some events, e.g., perf metrics Topdown events, + * must always be grouped. Ignore the events. + */ +void evsel__remove_from_group(struct evsel *evsel, struct evsel *leader) +{ + if (!arch_evsel__must_be_in_group(evsel) && evsel != leader) { + evsel__set_leader(evsel, evsel); + evsel->core.nr_members = 0; + leader->core.nr_members--; + } +} + +bool evsel__set_needs_uniquify(struct evsel *counter, const struct perf_stat_config *config) +{ + struct evsel *evsel; + + if (counter->needs_uniquify) { + /* Already set. */ + return true; + } + + if (counter->use_config_name || counter->is_libpfm_event) { + /* Original name will be used. */ + return false; + } + + if (!config->hybrid_merge && evsel__is_hybrid(counter)) { + /* Unique hybrid counters necessary. */ + counter->needs_uniquify = true; + return true; + } + + if (counter->core.attr.type < PERF_TYPE_MAX && counter->core.attr.type != PERF_TYPE_RAW) { + /* Legacy event, don't uniquify. */ + return false; + } + + if (counter->pmu && counter->pmu->is_core && + counter->alternate_hw_config != PERF_COUNT_HW_MAX) { + /* A sysfs or json event replacing a legacy event, don't uniquify. */ + return false; + } + + if (config->aggr_mode == AGGR_NONE) { + /* Always unique with no aggregation. */ + counter->needs_uniquify = true; + return true; + } + + if (counter->first_wildcard_match != NULL) { + /* + * If stats are merged then only the first_wildcard_match is + * displayed, there is no need to uniquify this evsel as the + * name won't be shown. + */ + return false; + } + + /* + * Do other non-merged events in the evlist have the same name? If so + * uniquify is necessary. + */ + evlist__for_each_entry(counter->evlist, evsel) { + if (evsel == counter || evsel->first_wildcard_match || evsel->pmu == counter->pmu) + continue; + + if (evsel__name_is(counter, evsel__name(evsel))) { + counter->needs_uniquify = true; + return true; + } + } + return false; +} + +void evsel__uniquify_counter(struct evsel *counter) +{ + const char *name, *pmu_name, *config; + char *new_name; + int len, ret; + + /* No uniquification necessary. */ + if (!counter->needs_uniquify) + return; + + /* The evsel was already uniquified. */ + if (counter->uniquified_name) + return; + + /* Avoid checking to uniquify twice. */ + counter->uniquified_name = true; + + name = evsel__name(counter); + config = strchr(name, '/'); + pmu_name = counter->pmu->name; + + /* Already prefixed by the PMU name? */ + len = pmu_name_len_no_suffix(pmu_name); + + if (!strncmp(name, pmu_name, len)) { + /* + * If the PMU name is there, then there is no sense in not + * having a slash. Do this for robustness. + */ + if (config == NULL) + config = name - 1; + + ret = asprintf(&new_name, "%s/%s", pmu_name, config + 1); + } else if (config) { + len = config - name; + if (config[1] == '/') { + /* case: event// */ + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 2); + } else { + /* case: event/.../ */ + ret = asprintf(&new_name, "%s/%.*s,%s", pmu_name, len, name, config + 1); + } + } else { + config = strchr(name, ':'); + if (config) { + /* case: event:.. */ + len = config - name; + + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 1); + } else { + /* case: event */ + ret = asprintf(&new_name, "%s/%s/", pmu_name, name); + } + } + if (ret > 0) { + free(counter->name); + counter->name = new_name; + } else { + /* ENOMEM from asprintf. */ + counter->uniquified_name = false; + } +} + +void evsel__warn_user_requested_cpus(struct evsel *evsel, struct perf_cpu_map *user_requested_cpus) +{ + struct perf_cpu_map *intersect, *online = NULL; + const struct perf_pmu *pmu = evsel__find_pmu(evsel); + + if (pmu && pmu->is_core) { + intersect = perf_cpu_map__intersect(pmu->cpus, user_requested_cpus); + } else { + online = cpu_map__online(); + intersect = perf_cpu_map__intersect(online, user_requested_cpus); + } + if (!perf_cpu_map__equal(intersect, user_requested_cpus)) { + char buf1[128]; + char buf2[128]; + + cpu_map__snprint(user_requested_cpus, buf1, sizeof(buf1)); + cpu_map__snprint(online ?: pmu->cpus, buf2, sizeof(buf2)); + pr_warning("WARNING: A requested CPU in '%s' is not supported by PMU '%s' (CPUs %s) for event '%s'\n", + buf1, pmu ? pmu->name : "cpu", buf2, evsel__name(evsel)); + } + perf_cpu_map__put(intersect); + perf_cpu_map__put(online); +} |