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| author | Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
| commit | 4247f24c23589bcc3bc3490515ef8c9497e9ae55 (patch) | |
| tree | 89726a0e171c443a3e8def2992b56dbd8a21df21 /tools/perf/util/evsel.c | |
| parent | 79ab67ede21f536851a99ea68ee6fc1f5435e055 (diff) | |
| parent | 9f586fff6574f6ecbf323f92d44ffaf0d96225fe (diff) | |
| download | linux-4247f24c23589bcc3bc3490515ef8c9497e9ae55.tar.gz linux-4247f24c23589bcc3bc3490515ef8c9497e9ae55.tar.xz | |
Merge branch 'for-4.15/dax' into libnvdimm-for-next
Diffstat (limited to 'tools/perf/util/evsel.c')
| -rw-r--r-- | tools/perf/util/evsel.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 4bb89373eb52..0dccdb89572c 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -271,12 +271,17 @@ struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) return evsel; } +static bool perf_event_can_profile_kernel(void) +{ + return geteuid() == 0 || perf_event_paranoid() == -1; +} + struct perf_evsel *perf_evsel__new_cycles(bool precise) { struct perf_event_attr attr = { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES, - .exclude_kernel = geteuid() != 0, + .exclude_kernel = !perf_event_can_profile_kernel(), }; struct perf_evsel *evsel; |