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perf tools: Use atomic.h for the map_groups refcount

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2015-05-15 15:20:44 -03:00
parent aa891009ee
commit 848cbd2562
3 changed files with 12 additions and 10 deletions
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6
tools/perf/util/map.h
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@@ -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;
}