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authorJiri Olsa <jolsa@kernel.org>2018-02-01 11:38:11 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-02-05 18:18:28 +0300
commitf290aa1ffa45ed7e37599840878b4dae68269ee1 (patch)
tree4da6073bde2a9e3f42e63fd08088742132ff5568 /tools/perf/util/evsel.c
parent49c0ae80eb32426fa133246200628e529067c595 (diff)
downloadlinux-f290aa1ffa45ed7e37599840878b4dae68269ee1.tar.xz
perf record: Fix period option handling
Stephan reported we don't unset PERIOD sample type when --no-period is specified. Adding the unset check and reset PERIOD if --no-period is specified. Committer notes: Check the sample_type, it shouldn't have PERF_SAMPLE_PERIOD there when --no-period is used. Before: # perf record --no-period sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ] # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 # After: [root@jouet ~]# perf record --no-period sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.019 MB perf.data (17 samples) ] [root@jouet ~]# perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 [root@jouet ~]# Reported-by: Stephane Eranian <eranian@google.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Stephane Eranian <eranian@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180201083812.11359-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evsel.c')
-rw-r--r--tools/perf/util/evsel.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f2f2eaafde6d..ff359c9ece2e 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -971,9 +971,6 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
if (target__has_cpu(&opts->target) || opts->sample_cpu)
perf_evsel__set_sample_bit(evsel, CPU);
- if (opts->period)
- perf_evsel__set_sample_bit(evsel, PERIOD);
-
/*
* When the user explicitly disabled time don't force it here.
*/
@@ -1075,6 +1072,14 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
apply_config_terms(evsel, opts, track);
evsel->ignore_missing_thread = opts->ignore_missing_thread;
+
+ /* The --period option takes the precedence. */
+ if (opts->period_set) {
+ if (opts->period)
+ perf_evsel__set_sample_bit(evsel, PERIOD);
+ else
+ perf_evsel__reset_sample_bit(evsel, PERIOD);
+ }
}
static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)