lkml.org 
[lkml]   [2022]   [May]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/4] perf report: Do not extend sample type of bpf-output event
Date
Currently evsel__new_idx() sets more sample_type bits when it finds a
BPF-output event. But it should honor what's recorded in the perf
data file rather than blindly sets the bits. Otherwise it could lead
to a parse error when it recorded with a modified sample_type.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/util/evsel.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index d38722560e80..63a8b832b822 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -269,8 +269,8 @@ struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx)
return NULL;
evsel__init(evsel, attr, idx);

- if (evsel__is_bpf_output(evsel)) {
- evsel->core.attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
+ if (evsel__is_bpf_output(evsel) && !attr->sample_type) {
+ evsel->core.attr.sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD),
evsel->core.attr.sample_period = 1;
}
--
2.36.0.512.ge40c2bad7a-goog
\
 
 \ /
  Last update: 2022-05-06 22:17    [W:0.082 / U:0.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site