diff options
Diffstat (limited to 'tools/perf/util/header.c')
| -rw-r--r-- | tools/perf/util/header.c | 130 |
1 files changed, 128 insertions, 2 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 7c0e9d587bfa..a326e0d8b5b6 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -15,9 +15,8 @@ #include <linux/bitops.h> #include <linux/stringify.h> #include <sys/stat.h> -#include <sys/types.h> #include <sys/utsname.h> -#include <unistd.h> +#include <linux/time64.h> #include "evlist.h" #include "evsel.h" @@ -37,6 +36,7 @@ #include <api/fs/fs.h> #include "asm/bug.h" #include "tool.h" +#include "time-utils.h" #include "sane_ctype.h" @@ -1182,6 +1182,20 @@ static int write_stat(struct feat_fd *ff __maybe_unused, return 0; } +static int write_sample_time(struct feat_fd *ff, + struct perf_evlist *evlist) +{ + int ret; + + ret = do_write(ff, &evlist->first_sample_time, + sizeof(evlist->first_sample_time)); + if (ret < 0) + return ret; + + return do_write(ff, &evlist->last_sample_time, + sizeof(evlist->last_sample_time)); +} + static void print_hostname(struct feat_fd *ff, FILE *fp) { fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname); @@ -1507,6 +1521,28 @@ static void print_group_desc(struct feat_fd *ff, FILE *fp) } } +static void print_sample_time(struct feat_fd *ff, FILE *fp) +{ + struct perf_session *session; + char time_buf[32]; + double d; + + session = container_of(ff->ph, struct perf_session, header); + + timestamp__scnprintf_usec(session->evlist->first_sample_time, + time_buf, sizeof(time_buf)); + fprintf(fp, "# time of first sample : %s\n", time_buf); + + timestamp__scnprintf_usec(session->evlist->last_sample_time, + time_buf, sizeof(time_buf)); + fprintf(fp, "# time of last sample : %s\n", time_buf); + + d = (double)(session->evlist->last_sample_time - + session->evlist->first_sample_time) / NSEC_PER_MSEC; + + fprintf(fp, "# sample duration : %10.3f ms\n", d); +} + static int __event_process_build_id(struct build_id_event *bev, char *filename, struct perf_session *session) @@ -2148,6 +2184,27 @@ out_free_caches: return -1; } +static int process_sample_time(struct feat_fd *ff, void *data __maybe_unused) +{ + struct perf_session *session; + u64 first_sample_time, last_sample_time; + int ret; + + session = container_of(ff->ph, struct perf_session, header); + + ret = do_read_u64(ff, &first_sample_time); + if (ret) + return -1; + + ret = do_read_u64(ff, &last_sample_time); + if (ret) + return -1; + + session->evlist->first_sample_time = first_sample_time; + session->evlist->last_sample_time = last_sample_time; + return 0; +} + struct feature_ops { int (*write)(struct feat_fd *ff, struct perf_evlist *evlist); void (*print)(struct feat_fd *ff, FILE *fp); @@ -2205,6 +2262,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = { FEAT_OPN(AUXTRACE, auxtrace, false), FEAT_OPN(STAT, stat, false), FEAT_OPN(CACHE, cache, true), + FEAT_OPR(SAMPLE_TIME, sample_time, false), }; struct header_print_data { @@ -3258,6 +3316,74 @@ int perf_event__synthesize_attrs(struct perf_tool *tool, return err; } +static bool has_unit(struct perf_evsel *counter) +{ + return counter->unit && *counter->unit; +} + +static bool has_scale(struct perf_evsel *counter) +{ + return counter->scale != 1; +} + +int perf_event__synthesize_extra_attr(struct perf_tool *tool, + struct perf_evlist *evsel_list, + perf_event__handler_t process, + bool is_pipe) +{ + struct perf_evsel *counter; + int err; + + /* + * Synthesize other events stuff not carried within + * attr event - unit, scale, name + */ + evlist__for_each_entry(evsel_list, counter) { + if (!counter->supported) + continue; + + /* + * Synthesize unit and scale only if it's defined. + */ + if (has_unit(counter)) { + err = perf_event__synthesize_event_update_unit(tool, counter, process); + if (err < 0) { + pr_err("Couldn't synthesize evsel unit.\n"); + return err; + } + } + + if (has_scale(counter)) { + err = perf_event__synthesize_event_update_scale(tool, counter, process); + if (err < 0) { + pr_err("Couldn't synthesize evsel counter.\n"); + return err; + } + } + + if (counter->own_cpus) { + err = perf_event__synthesize_event_update_cpus(tool, counter, process); + if (err < 0) { + pr_err("Couldn't synthesize evsel cpus.\n"); + return err; + } + } + + /* + * Name is needed only for pipe output, + * perf.data carries event names. + */ + if (is_pipe) { + err = perf_event__synthesize_event_update_name(tool, counter, process); + if (err < 0) { + pr_err("Couldn't synthesize evsel name.\n"); + return err; + } + } + } + return 0; +} + int perf_event__process_attr(struct perf_tool *tool __maybe_unused, union perf_event *event, struct perf_evlist **pevlist) |