Commit-ID: e2407bef968d64a28465561832686636d3380bf9 Gitweb: http://git.kernel.org/tip/e2407bef968d64a28465561832686636d3380bf9 Author: Andi Kleen <a...@linux.intel.com> AuthorDate: Fri, 2 Aug 2013 17:41:10 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Wed, 7 Aug 2013 17:35:28 -0300
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 <a...@linux.intel.com> Reviewed-by: Jiri Olsa <jo...@redhat.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/r/1375490473-1503-3-git-send-email-a...@firstfloor.org [ Fixed up 'err' variable indentation ] Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/evsel.c | 21 ++++++++++++++++++--- tools/perf/util/evsel.h | 1 + 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8f10161..960394e 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)); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 5edc625..532a5f9 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -146,6 +146,7 @@ void perf_evsel__set_sample_id(struct perf_evsel *evsel); int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, const char *filter); +int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads); int perf_evsel__open_per_cpu(struct perf_evsel *evsel, struct cpu_map *cpus); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
