Commit-ID: f99f4719b841a9745d6a7652eef3956aaf2db66a Gitweb: http://git.kernel.org/tip/f99f4719b841a9745d6a7652eef3956aaf2db66a Author: Jiri Olsa <jo...@kernel.org> AuthorDate: Fri, 26 Jun 2015 11:29:18 +0200 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Fri, 26 Jun 2015 11:46:57 -0300
perf stat: Introduce perf_evsel__read function Adding simple read function that reads/store data into given struct perf_counts_values *count object. Signed-off-by: Jiri Olsa <jo...@kernel.org> Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: Andi Kleen <a...@linux.intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/r/1435310967-14570-14-git-send-email-jo...@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/evsel.c | 14 ++++++++++++++ tools/perf/util/evsel.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index cd6ce70..2e0a4e0 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -955,6 +955,20 @@ int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, return cb(evsel, cpu, thread, &count); } +int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count) +{ + memset(count, 0, sizeof(*count)); + + if (FD(evsel, cpu, thread) < 0) + return -EINVAL; + + if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) < 0) + return -errno; + + return 0; +} + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale) { diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 020f7e1..a79944a 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -236,6 +236,9 @@ typedef int (perf_evsel__read_cb_t)(struct perf_evsel *evsel, int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, perf_evsel__read_cb_t cb); +int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count); + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale); -- 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/
