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authorSean Paul <seanpaul@chromium.org>2017-06-27 09:18:17 -0400
committerSean Paul <seanpaul@chromium.org>2017-06-27 09:18:17 -0400
commitb740e76936c14354a9c5676a3eed839ea8472c41 (patch)
treedd0b74f64007dba28fcf12595af893e367d307ff /tools/perf/util/evsel.c
parent7141fd3e5ba90d09d2138ff1bbefd7cc43a82e94 (diff)
parent6d61e70ccc21606ffb8a0a03bd3aba24f659502b (diff)
downloadblackbird-op-linux-b740e76936c14354a9c5676a3eed839ea8472c41.tar.gz
blackbird-op-linux-b740e76936c14354a9c5676a3eed839ea8472c41.zip
Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
Required for Daniel's drm_vblank_cleanup cleanup
Diffstat (limited to 'tools/perf/util/evsel.c')
-rw-r--r--tools/perf/util/evsel.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e4f7902d5afa..cda44b0e821c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -273,8 +273,20 @@ struct perf_evsel *perf_evsel__new_cycles(void)
struct perf_evsel *evsel;
event_attr_init(&attr);
+ /*
+ * Unnamed union member, not supported as struct member named
+ * initializer in older compilers such as gcc 4.4.7
+ *
+ * Just for probing the precise_ip:
+ */
+ attr.sample_period = 1;
perf_event_attr__set_max_precise_ip(&attr);
+ /*
+ * Now let the usual logic to set up the perf_event_attr defaults
+ * to kick in when we return and before perf_evsel__open() is called.
+ */
+ attr.sample_period = 0;
evsel = perf_evsel__new(&attr);
if (evsel == NULL)
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