diff options
Diffstat (limited to 'tools/perf/builtin-ftrace.c')
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 834074162a63..2a786047ba32 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -43,6 +43,8 @@ static volatile sig_atomic_t workload_exec_errno; static volatile sig_atomic_t done; +static struct stats latency_stats; /* for tracepoints */ + static void sig_handler(int sig __maybe_unused) { done = true; @@ -798,8 +800,10 @@ static void make_histogram(struct perf_ftrace *ftrace, int buckets[], if (i >= NUM_BUCKET || num >= max_latency - min_latency) i = NUM_BUCKET - 1; + num += min_latency; do_inc: buckets[i]++; + update_stats(&latency_stats, num); next: /* empty the line buffer for the next output */ @@ -894,6 +898,12 @@ print_bucket_info: printf(" | %10d | %.*s%*s |\n", buckets[NUM_BUCKET - 1], bar_len, bar, bar_total - bar_len, ""); + printf("\n# statistics (in %s)\n", ftrace->use_nsec ? "nsec" : "usec"); + printf(" total time: %20.0f\n", latency_stats.mean * latency_stats.n); + printf(" avg time: %20.0f\n", latency_stats.mean); + printf(" max time: %20"PRIu64"\n", latency_stats.max); + printf(" min time: %20"PRIu64"\n", latency_stats.min); + printf(" count: %20.0f\n", latency_stats.n); } static int prepare_func_latency(struct perf_ftrace *ftrace) @@ -932,6 +942,8 @@ static int prepare_func_latency(struct perf_ftrace *ftrace) if (fd < 0) pr_err("failed to open trace_pipe\n"); + init_stats(&latency_stats); + put_tracing_file(trace_file); return fd; } @@ -961,7 +973,7 @@ static int stop_func_latency(struct perf_ftrace *ftrace) static int read_func_latency(struct perf_ftrace *ftrace, int buckets[]) { if (ftrace->target.use_bpf) - return perf_ftrace__latency_read_bpf(ftrace, buckets); + return perf_ftrace__latency_read_bpf(ftrace, buckets, &latency_stats); return 0; } |