On 4/14/14, 9:52 AM, Jiri Olsa wrote:
From: Arnaldo Carvalho de Melo <a...@redhat.com>We will share it among threads in the same process. Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Don Zickus <dzic...@redhat.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Mike Galbraith <efa...@gmx.de> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Signed-off-by: Jiri Olsa <jo...@redhat.com> --- tools/perf/util/map.c | 7 +++++++ tools/perf/util/map.h | 9 +++++++++ tools/perf/util/thread.c | 2 +- 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index ae4c5e1..ba5f5c0c 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -323,6 +323,7 @@ void map_groups__init(struct map_groups *mg) INIT_LIST_HEAD(&mg->removed_maps[i]); } mg->machine = NULL; + mg->refcnt = 1; } static void maps__delete(struct rb_root *maps) @@ -374,6 +375,12 @@ void map_groups__delete(struct map_groups *mg) free(mg); } +void map_groups__put(struct map_groups *mg) +{ + if (--mg->refcnt == 0) + map_groups__delete(mg); +} + void map_groups__flush(struct map_groups *mg) { int type; diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index 1073e2d..d6445b2 100644 --- a/tools/perf/util/map.h +++ b/tools/perf/util/map.h @@ -59,11 +59,20 @@ struct map_groups { struct rb_root maps[MAP__NR_TYPES]; struct list_head removed_maps[MAP__NR_TYPES]; struct machine *machine; + int refcnt; };
atomic for refcnt? This is part of a libperf; would be good to support multithreaded users.
David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
