libperf: Add perf_cpu_map__for_each_cpu() macro

Add the following macro to libperf:

  perf_cpu_map__for_each_cpu()

And its related functions:

  perf_cpu_map__cpu()
  perf_cpu_map__nr()

That will allow hiding how it is implemented.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-67-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/tools/perf/lib/cpumap.c b/tools/perf/lib/cpumap.c
index a5d4f7ff7174..1ddb69e796e5 100644
--- a/tools/perf/lib/cpumap.c
+++ b/tools/perf/lib/cpumap.c
@@ -224,3 +224,16 @@ invalid:
 out:
 	return cpus;
 }
+
+int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx)
+{
+	if (idx < cpus->nr)
+		return cpus->map[idx];
+
+	return -1;
+}
+
+int perf_cpu_map__nr(const struct perf_cpu_map *cpus)
+{
+	return cpus ? cpus->nr : 1;
+}