[tip:perf/core] perf cpu_map: Add has() method

[tip-bot for Jiri Olsa <tipbot@zytor.com>]

Commit-ID:  e632aa69c919462a7f93c8799b97c8a9ddd48fc2
Gitweb:     http://git.kernel.org/tip/e632aa69c919462a7f93c8799b97c8a9ddd48fc2
Author:     Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 12 Apr 2016 15:29:25 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 13 Apr 2016 10:11:50 -0300

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>
---
 tools/perf/util/cpumap.c | 12 ++++++++++++
 tools/perf/util/cpumap.h |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 9bcf2be..02d8016 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 81a2562..1a0a350 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 */