perf cpu_map: Add has() method

Adding cpu_map__has() to return bool of cpu presence in cpus map.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460467771-26532-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 9bcf2bed3a6d..02d801670f30 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -587,3 +587,15 @@ int cpu__setup_cpunode_map(void)
         closedir(dir1);
         return 0;
 }
+
+bool cpu_map__has(struct cpu_map *cpus, int cpu)
+{
+        int i;
+
+        for (i = 0; i < cpus->nr; ++i) {
+                if (cpus->map[i] == cpu)
+                        return true;
+        }
+
+        return false;
+}
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index 81a2562aaa2b..1a0a35073ce1 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -66,4 +66,6 @@ int cpu__get_node(int cpu);
 int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res,
                        int (*f)(struct cpu_map *map, int cpu, void *data),
                        void *data);
+
+bool cpu_map__has(struct cpu_map *cpus, int cpu);
 #endif /* __PERF_CPUMAP_H */