diff options
Diffstat (limited to 'tools/perf/util/bpf_ftrace.c')
| -rw-r--r-- | tools/perf/util/bpf_ftrace.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/util/bpf_ftrace.c b/tools/perf/util/bpf_ftrace.c index bc484e65fb8f..25fc280e414a 100644 --- a/tools/perf/util/bpf_ftrace.c +++ b/tools/perf/util/bpf_ftrace.c @@ -11,6 +11,7 @@ #include "util/debug.h" #include "util/evlist.h" #include "util/bpf_counter.h" +#include "util/stat.h" #include "util/bpf_skel/func_latency.skel.h" @@ -86,6 +87,8 @@ int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace) } } + skel->bss->min = INT64_MAX; + skel->links.func_begin = bpf_program__attach_kprobe(skel->progs.func_begin, false, func->name); if (IS_ERR(skel->links.func_begin)) { @@ -122,7 +125,7 @@ int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused) } int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, - int buckets[]) + int buckets[], struct stats *stats) { int i, fd, err; u32 idx; @@ -146,6 +149,13 @@ int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, buckets[idx] += hist[i]; } + if (skel->bss->count) { + stats->mean = skel->bss->total / skel->bss->count; + stats->n = skel->bss->count; + stats->max = skel->bss->max; + stats->min = skel->bss->min; + } + free(hist); return 0; } |