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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-15 15:20:44 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-15 15:20:44 -0300 |
| commit | 848cbd2562bb85953884be72b3bdbee0b2f32474 (patch) | |
| tree | ff503a6ea6ef8028eb9c45793a63b62364e36e78 /tools/perf/util/map.h | |
| parent | Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (diff) | |
| download | linux-dev-848cbd2562bb85953884be72b3bdbee0b2f32474.tar.xz linux-dev-848cbd2562bb85953884be72b3bdbee0b2f32474.zip | |
perf tools: Use atomic.h for the map_groups refcount
Now that we have atomic.h, we should convert all of the existing
refcounts to use it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-onm5u3pioba1hqqhjs8on03e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/map.h')
| -rw-r--r-- | tools/perf/util/map.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index 4e0c729841ab..7f39217d29bf 100644 --- a/tools/perf/util/map.h +++ b/tools/perf/util/map.h @@ -1,6 +1,7 @@ #ifndef __PERF_MAP_H #define __PERF_MAP_H +#include <linux/atomic.h> #include <linux/compiler.h> #include <linux/list.h> #include <linux/rbtree.h> @@ -61,7 +62,7 @@ struct map_groups { struct rb_root maps[MAP__NR_TYPES]; struct list_head removed_maps[MAP__NR_TYPES]; struct machine *machine; - int refcnt; + atomic_t refcnt; }; struct map_groups *map_groups__new(struct machine *machine); @@ -70,7 +71,8 @@ bool map_groups__empty(struct map_groups *mg); static inline struct map_groups *map_groups__get(struct map_groups *mg) { - ++mg->refcnt; + if (mg) + atomic_inc(&mg->refcnt); return mg; } |