diff options
Diffstat (limited to 'tools/perf/util/pmus.c')
| -rw-r--r-- | tools/perf/util/pmus.c | 134 |
1 files changed, 120 insertions, 14 deletions
diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 3bbd26fec78a..98be2eb8f1f0 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -12,6 +12,7 @@ #include <unistd.h> #include "cpumap.h" #include "debug.h" +#include "drm_pmu.h" #include "evsel.h" #include "pmus.h" #include "pmu.h" @@ -19,6 +20,7 @@ #include "tool_pmu.h" #include "print-events.h" #include "strbuf.h" +#include "string2.h" /* * core_pmus: A PMU belongs to core_pmus if it's name is "cpu" or it's sysfs @@ -42,16 +44,19 @@ enum perf_tool_pmu_type { PERF_TOOL_PMU_TYPE_PE_OTHER, PERF_TOOL_PMU_TYPE_TOOL, PERF_TOOL_PMU_TYPE_HWMON, + PERF_TOOL_PMU_TYPE_DRM, #define PERF_TOOL_PMU_TYPE_PE_CORE_MASK (1 << PERF_TOOL_PMU_TYPE_PE_CORE) #define PERF_TOOL_PMU_TYPE_PE_OTHER_MASK (1 << PERF_TOOL_PMU_TYPE_PE_OTHER) #define PERF_TOOL_PMU_TYPE_TOOL_MASK (1 << PERF_TOOL_PMU_TYPE_TOOL) #define PERF_TOOL_PMU_TYPE_HWMON_MASK (1 << PERF_TOOL_PMU_TYPE_HWMON) +#define PERF_TOOL_PMU_TYPE_DRM_MASK (1 << PERF_TOOL_PMU_TYPE_DRM) #define PERF_TOOL_PMU_TYPE_ALL_MASK (PERF_TOOL_PMU_TYPE_PE_CORE_MASK | \ PERF_TOOL_PMU_TYPE_PE_OTHER_MASK | \ PERF_TOOL_PMU_TYPE_TOOL_MASK | \ - PERF_TOOL_PMU_TYPE_HWMON_MASK) + PERF_TOOL_PMU_TYPE_HWMON_MASK | \ + PERF_TOOL_PMU_TYPE_DRM_MASK) }; static unsigned int read_pmu_types; @@ -172,6 +177,8 @@ struct perf_pmu *perf_pmus__find(const char *name) /* Looking up an individual perf event PMU failed, check if a tool PMU should be read. */ if (!strncmp(name, "hwmon_", 6)) to_read_pmus |= PERF_TOOL_PMU_TYPE_HWMON_MASK; + else if (!strncmp(name, "drm_", 4)) + to_read_pmus |= PERF_TOOL_PMU_TYPE_DRM_MASK; else if (!strcmp(name, "tool")) to_read_pmus |= PERF_TOOL_PMU_TYPE_TOOL_MASK; @@ -272,6 +279,10 @@ skip_pe_pmus: (read_pmu_types & PERF_TOOL_PMU_TYPE_HWMON_MASK) == 0) perf_pmus__read_hwmon_pmus(&other_pmus); + if ((to_read_types & PERF_TOOL_PMU_TYPE_DRM_MASK) != 0 && + (read_pmu_types & PERF_TOOL_PMU_TYPE_DRM_MASK) == 0) + perf_pmus__read_drm_pmus(&other_pmus); + list_sort(NULL, &other_pmus, pmus_cmp); read_pmu_types |= to_read_types; @@ -304,6 +315,8 @@ struct perf_pmu *perf_pmus__find_by_type(unsigned int type) if (type >= PERF_PMU_TYPE_PE_START && type <= PERF_PMU_TYPE_PE_END) { to_read_pmus = PERF_TOOL_PMU_TYPE_PE_CORE_MASK | PERF_TOOL_PMU_TYPE_PE_OTHER_MASK; + } else if (type >= PERF_PMU_TYPE_DRM_START && type <= PERF_PMU_TYPE_DRM_END) { + to_read_pmus = PERF_TOOL_PMU_TYPE_DRM_MASK; } else if (type >= PERF_PMU_TYPE_HWMON_START && type <= PERF_PMU_TYPE_HWMON_END) { to_read_pmus = PERF_TOOL_PMU_TYPE_HWMON_MASK; } else { @@ -350,6 +363,92 @@ struct perf_pmu *perf_pmus__scan_core(struct perf_pmu *pmu) return NULL; } +struct perf_pmu *perf_pmus__scan_for_event(struct perf_pmu *pmu, const char *event) +{ + bool use_core_pmus = !pmu || pmu->is_core; + + if (!pmu) { + /* Hwmon filename values that aren't used. */ + enum hwmon_type type; + int number; + /* + * Core PMUs, other sysfs PMUs and tool PMU can take all event + * types or aren't wother optimizing for. + */ + unsigned int to_read_pmus = PERF_TOOL_PMU_TYPE_PE_CORE_MASK | + PERF_TOOL_PMU_TYPE_PE_OTHER_MASK | + PERF_TOOL_PMU_TYPE_TOOL_MASK; + + /* Could the event be a hwmon event? */ + if (parse_hwmon_filename(event, &type, &number, /*item=*/NULL, /*alarm=*/NULL)) + to_read_pmus |= PERF_TOOL_PMU_TYPE_HWMON_MASK; + + /* Could the event be a DRM event? */ + if (strlen(event) > 4 && strncmp("drm-", event, 4) == 0) + to_read_pmus |= PERF_TOOL_PMU_TYPE_DRM_MASK; + + pmu_read_sysfs(to_read_pmus); + pmu = list_prepare_entry(pmu, &core_pmus, list); + } + if (use_core_pmus) { + list_for_each_entry_continue(pmu, &core_pmus, list) + return pmu; + + pmu = NULL; + pmu = list_prepare_entry(pmu, &other_pmus, list); + } + list_for_each_entry_continue(pmu, &other_pmus, list) + return pmu; + return NULL; +} + +struct perf_pmu *perf_pmus__scan_matching_wildcard(struct perf_pmu *pmu, const char *wildcard) +{ + bool use_core_pmus = !pmu || pmu->is_core; + + if (!pmu) { + /* + * Core PMUs, other sysfs PMUs and tool PMU can have any name or + * aren't wother optimizing for. + */ + unsigned int to_read_pmus = PERF_TOOL_PMU_TYPE_PE_CORE_MASK | + PERF_TOOL_PMU_TYPE_PE_OTHER_MASK | + PERF_TOOL_PMU_TYPE_TOOL_MASK; + + /* + * Hwmon PMUs have an alias from a sysfs name like hwmon0, + * hwmon1, etc. or have a name of hwmon_<name>. They therefore + * can only have a wildcard match if the wildcard begins with + * "hwmon". Similarly drm PMUs must start "drm_", avoid reading + * such events unless the PMU could match. + */ + if (strisglob(wildcard)) { + to_read_pmus |= PERF_TOOL_PMU_TYPE_HWMON_MASK | + PERF_TOOL_PMU_TYPE_DRM_MASK; + } else if (strlen(wildcard) >= 4 && strncmp("drm_", wildcard, 4) == 0) { + to_read_pmus |= PERF_TOOL_PMU_TYPE_DRM_MASK; + } else if (strlen(wildcard) >= 5 && strncmp("hwmon", wildcard, 5) == 0) { + to_read_pmus |= PERF_TOOL_PMU_TYPE_HWMON_MASK; + } + + pmu_read_sysfs(to_read_pmus); + pmu = list_prepare_entry(pmu, &core_pmus, list); + } + if (use_core_pmus) { + list_for_each_entry_continue(pmu, &core_pmus, list) { + if (perf_pmu__wildcard_match(pmu, wildcard)) + return pmu; + } + pmu = NULL; + pmu = list_prepare_entry(pmu, &other_pmus, list); + } + list_for_each_entry_continue(pmu, &other_pmus, list) { + if (perf_pmu__wildcard_match(pmu, wildcard)) + return pmu; + } + return NULL; +} + static struct perf_pmu *perf_pmus__scan_skip_duplicates(struct perf_pmu *pmu) { bool use_core_pmus = !pmu || pmu->is_core; @@ -546,6 +645,7 @@ void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *p print_cb->print_event(print_state, aliases[j].topic, aliases[j].pmu_name, + aliases[j].pmu->type, aliases[j].name, aliases[j].alias, aliases[j].scale_unit, @@ -650,6 +750,7 @@ void perf_pmus__print_raw_pmu_events(const struct print_callbacks *print_cb, voi print_cb->print_event(print_state, /*topic=*/NULL, /*pmu_name=*/NULL, + pmu->type, format_args.short_string.buf, /*event_alias=*/NULL, /*scale_unit=*/NULL, @@ -715,24 +816,18 @@ bool perf_pmus__supports_extended_type(void) return perf_pmus__do_support_extended_type; } -struct perf_pmu *evsel__find_pmu(const struct evsel *evsel) +struct perf_pmu *perf_pmus__find_by_attr(const struct perf_event_attr *attr) { - struct perf_pmu *pmu = evsel->pmu; - bool legacy_core_type; - - if (pmu) - return pmu; + struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); + u32 type = attr->type; + bool legacy_core_type = type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE; - pmu = perf_pmus__find_by_type(evsel->core.attr.type); - legacy_core_type = - evsel->core.attr.type == PERF_TYPE_HARDWARE || - evsel->core.attr.type == PERF_TYPE_HW_CACHE; if (!pmu && legacy_core_type && perf_pmus__supports_extended_type()) { - u32 type = evsel->core.attr.config >> PERF_PMU_TYPE_SHIFT; + type = attr->config >> PERF_PMU_TYPE_SHIFT; pmu = perf_pmus__find_by_type(type); } - if (!pmu && (legacy_core_type || evsel->core.attr.type == PERF_TYPE_RAW)) { + if (!pmu && (legacy_core_type || type == PERF_TYPE_RAW)) { /* * For legacy events, if there was no extended type info then * assume the PMU is the first core PMU. @@ -743,6 +838,17 @@ struct perf_pmu *evsel__find_pmu(const struct evsel *evsel) */ pmu = perf_pmus__find_core_pmu(); } + return pmu; +} + +struct perf_pmu *evsel__find_pmu(const struct evsel *evsel) +{ + struct perf_pmu *pmu = evsel->pmu; + + if (pmu) + return pmu; + + pmu = perf_pmus__find_by_attr(&evsel->core.attr); ((struct evsel *)evsel)->pmu = pmu; return pmu; } @@ -762,7 +868,7 @@ struct perf_pmu *perf_pmus__add_test_pmu(int test_sysfs_dirfd, const char *name) return perf_pmu__lookup(&other_pmus, test_sysfs_dirfd, name, /*eager_load=*/true); } -struct perf_pmu *perf_pmus__add_test_hwmon_pmu(int hwmon_dir, +struct perf_pmu *perf_pmus__add_test_hwmon_pmu(const char *hwmon_dir, const char *sysfs_name, const char *name) { |