diff options
Diffstat (limited to 'tools/perf/util/bpf_ftrace.c')
| -rw-r--r-- | tools/perf/util/bpf_ftrace.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tools/perf/util/bpf_ftrace.c b/tools/perf/util/bpf_ftrace.c index 25fc280e414a..7324668cc83e 100644 --- a/tools/perf/util/bpf_ftrace.c +++ b/tools/perf/util/bpf_ftrace.c @@ -39,6 +39,10 @@ int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace) skel->rodata->bucket_range = ftrace->bucket_range; skel->rodata->min_latency = ftrace->min_latency; + skel->rodata->bucket_num = ftrace->bucket_num; + if (ftrace->bucket_range && ftrace->bucket_num) { + bpf_map__set_max_entries(skel->maps.latency, ftrace->bucket_num); + } /* don't need to set cpu filter for system-wide mode */ if (ftrace->target.cpu_list) { @@ -124,7 +128,7 @@ int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused) return 0; } -int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, +int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace, int buckets[], struct stats *stats) { int i, fd, err; @@ -138,7 +142,7 @@ int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, if (hist == NULL) return -ENOMEM; - for (idx = 0; idx < NUM_BUCKET; idx++) { + for (idx = 0; idx < skel->rodata->bucket_num; idx++) { err = bpf_map_lookup_elem(fd, &idx, hist); if (err) { buckets[idx] = 0; @@ -154,6 +158,12 @@ int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, stats->n = skel->bss->count; stats->max = skel->bss->max; stats->min = skel->bss->min; + + if (!ftrace->use_nsec) { + stats->mean /= 1000; + stats->max /= 1000; + stats->min /= 1000; + } } free(hist); |