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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-03-25 15:26:44 -0300 |
|---|---|---|
| committer |   Jiri Olsa <jolsa@kernel.org> | 2014-04-28 13:43:26 +0200 |
| commit | a26ca6716a6c683f40bd676cea7e89704653b98d (patch) | |
| tree | aa5fdacbf7eecbd959686d2ab3d28ed1cfebba83 /tools/perf | |
| parent | perf tools: Allocate thread map_groups's dynamically (diff) | |
| download | wireguard-linux-a26ca6716a6c683f40bd676cea7e89704653b98d.tar.xz wireguard-linux-a26ca6716a6c683f40bd676cea7e89704653b98d.zip | |
perf tools: Reference count map_groups objects
We will share it among threads in the same process.
Adding map_groups__get/map_groups__put interface for that.
Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1397490723-1992-4-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/map.c | 7 | ||||
| -rw-r--r-- | tools/perf/util/map.h | 9 | ||||
| -rw-r--r-- | tools/perf/util/thread.c | 2 |
3 files changed, 17 insertions, 1 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index ae4c5e12debd..ba5f5c0c838b 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 1073e2d8b797..d6445b27d672 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; }; struct map_groups *map_groups__new(void); void map_groups__delete(struct map_groups *mg); +static inline struct map_groups *map_groups__get(struct map_groups *mg) +{ + ++mg->refcnt; + return mg; +} + +void map_groups__put(struct map_groups *mg); + static inline struct kmap *map__kmap(struct map *map) { return (struct kmap *)(map + 1); diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index dc51d1632e92..b501848a8424 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -50,7 +50,7 @@ void thread__delete(struct thread *thread) { struct comm *comm, *tmp; - map_groups__delete(thread->mg); + map_groups__put(thread->mg); thread->mg = NULL; list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) { list_del(&comm->list); |