diff options
Diffstat (limited to 'tools/perf/util/bpf_skel/func_latency.bpf.c')
| -rw-r--r-- | tools/perf/util/bpf_skel/func_latency.bpf.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/bpf_skel/func_latency.bpf.c b/tools/perf/util/bpf_skel/func_latency.bpf.c index fb144811b34f..09e70d40a0f4 100644 --- a/tools/perf/util/bpf_skel/func_latency.bpf.c +++ b/tools/perf/util/bpf_skel/func_latency.bpf.c @@ -50,6 +50,7 @@ const volatile int use_nsec = 0; const volatile unsigned int bucket_range; const volatile unsigned int min_latency; const volatile unsigned int max_latency; +const volatile unsigned int bucket_num = NUM_BUCKET; SEC("kprobe/func") int BPF_PROG(func_begin) @@ -124,16 +125,16 @@ int BPF_PROG(func_end) if (delta > 0) { // 1st entry: [ 1 unit .. bucket_range units ) // clang 12 doesn't like s64 / u32 division key = (__u64)delta / bucket_range + 1; - if (key >= NUM_BUCKET || + if (key >= bucket_num || delta >= max_latency - min_latency) - key = NUM_BUCKET - 1; + key = bucket_num - 1; } delta += min_latency; goto do_lookup; } // calculate index using delta - for (key = 0; key < (NUM_BUCKET - 1); key++) { + for (key = 0; key < (bucket_num - 1); key++) { if (delta < (cmp_base << key)) break; } |