Messages in this thread Patch in this message | | | From | Igor Lubashev <> | Subject | [PATCH 3/5] perf util: kernel profiling is disallowed only when perf_event_paranoid > 1 | Date | Mon, 26 Aug 2019 21:39:14 -0400 |
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Perf was too restrictive about sysctl kernel.perf_event_paranoid. The kernel only disallows profiling when perf_event_paranoid > 1. Make perf do the same.
Signed-off-by: Igor Lubashev <ilubashe@akamai.com> --- tools/perf/util/evsel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 0b3b5af33954..bfe6ed2abcc2 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -279,7 +279,7 @@ struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) static bool perf_event_can_profile_kernel(void) { - return perf_event_paranoid_check(-1); + return perf_event_paranoid_check(1); } struct evsel *perf_evsel__new_cycles(bool precise) -- 2.7.4
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