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From:   Adrian Hunter <adrian.hunter@intel.com>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Jiri Olsa <jolsa@redhat.com>, Ian Rogers <irogers@google.com>,
        Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Leo Yan <leo.yan@linaro.org>, linux-kernel@vger.kernel.org
Subject: [PATCH RFC 02/21] libperf evsel: Add perf_evsel__enable_thread()
Date:   Fri, 22 Apr 2022 19:23:43 +0300
Message-Id: <20220422162402.147958-3-adrian.hunter@intel.com>
In-Reply-To: <20220422162402.147958-1-adrian.hunter@intel.com>
References: <20220422162402.147958-1-adrian.hunter@intel.com>
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Add perf_evsel__enable_thread() as a counterpart to
perf_evsel__enable_cpu(), to enable all events for a thread.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/lib/perf/evsel.c              | 10 ++++++++++
 tools/lib/perf/include/perf/evsel.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c
index 20ae9f5f8b30..2a1f07f877be 100644
--- a/tools/lib/perf/evsel.c
+++ b/tools/lib/perf/evsel.c
@@ -360,6 +360,16 @@ int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx)
 	return perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, cpu_map_idx);
 }
 
+int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread)
+{
+	int err = 0;
+	int i;
+
+	for (i = 0; i < xyarray__max_x(evsel->fd) && !err; i++)
+		err = perf_evsel__ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, i, thread);
+	return err;
+}
+
 int perf_evsel__enable(struct perf_evsel *evsel)
 {
 	int i;
diff --git a/tools/lib/perf/include/perf/evsel.h b/tools/lib/perf/include/perf/evsel.h
index 2a9516b42d15..699c0ed97d34 100644
--- a/tools/lib/perf/include/perf/evsel.h
+++ b/tools/lib/perf/include/perf/evsel.h
@@ -36,6 +36,7 @@ LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu_map_idx, int
 				 struct perf_counts_values *count);
 LIBPERF_API int perf_evsel__enable(struct perf_evsel *evsel);
 LIBPERF_API int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx);
+LIBPERF_API int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread);
 LIBPERF_API int perf_evsel__disable(struct perf_evsel *evsel);
 LIBPERF_API int perf_evsel__disable_cpu(struct perf_evsel *evsel, int cpu_map_idx);
 LIBPERF_API struct perf_cpu_map *perf_evsel__cpus(struct perf_evsel *evsel);
-- 
2.25.1