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authorNamhyung Kim <namhyung.kim@lge.com>2013-03-11 11:43:14 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-03-15 20:06:02 +0400
commitb3a319d528fd57ef600731ee1b84d00b7204881d (patch)
treefadbcc4a692d5a4e841af9823c527eca7c5dc7dc /tools/perf/util/thread_map.h
parent85397956de304106e2fdace2db8f69ab4e966bc5 (diff)
downloadlinux-b3a319d528fd57ef600731ee1b84d00b7204881d.tar.xz
perf evlist: Add thread_map__nr() helper
Introduce and use the thread_map__nr() function to protect a possible NULL pointer dereference and cleanup the code a bit. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1362987798-24969-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/thread_map.h')
-rw-r--r--tools/perf/util/thread_map.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h
index f718df8a3c59..0cd8b3108084 100644
--- a/tools/perf/util/thread_map.h
+++ b/tools/perf/util/thread_map.h
@@ -21,4 +21,9 @@ void thread_map__delete(struct thread_map *threads);
size_t thread_map__fprintf(struct thread_map *threads, FILE *fp);
+static inline int thread_map__nr(struct thread_map *threads)
+{
+ return threads ? threads->nr : 1;
+}
+
#endif /* __PERF_THREAD_MAP_H */