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| author |   Andi Kleen <ak@linux.intel.com> | 2013-08-02 17:41:10 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-08-07 17:35:28 -0300 |
| commit | e2407bef968d64a28465561832686636d3380bf9 (patch) | |
| tree | 416249ed0b2fc49d7e9e906b3357ee0872f1b74e /tools/perf/util/evsel.c | |
| parent | perf evlist: Remove obsolete dummy execve (diff) | |
| download | linux-dev-e2407bef968d64a28465561832686636d3380bf9.tar.xz linux-dev-e2407bef968d64a28465561832686636d3380bf9.zip | |
perf evsel: Add support for enabling counters
Add support for enabling already set up counters by using an
ioctl. I share some code with the filter setup.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1375490473-1503-3-git-send-email-andi@firstfloor.org
[ Fixed up 'err' variable indentation ]
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.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8f1016186d57..960394ea1e3a 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -634,15 +634,15 @@ int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) return evsel->fd != NULL ? 0 : -ENOMEM; } -int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, - const char *filter) +static int perf_evsel__run_ioctl(struct perf_evsel *evsel, int ncpus, int nthreads, + int ioc, void *arg) { int cpu, thread; for (cpu = 0; cpu < ncpus; cpu++) { for (thread = 0; thread < nthreads; thread++) { int fd = FD(evsel, cpu, thread), - err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter); + err = ioctl(fd, ioc, arg); if (err) return err; @@ -652,6 +652,21 @@ int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, return 0; } +int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, + const char *filter) +{ + return perf_evsel__run_ioctl(evsel, ncpus, nthreads, + PERF_EVENT_IOC_SET_FILTER, + (void *)filter); +} + +int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads) +{ + return perf_evsel__run_ioctl(evsel, ncpus, nthreads, + PERF_EVENT_IOC_ENABLE, + 0); +} + int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) { evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |