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perf tools: Reference count map_groups objects

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2014-03-25 15:26:44 -03:00
committed by Jiri Olsa
parent 93d5731dcb
commit a26ca6716a
3 changed files with 17 additions and 1 deletions
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7
tools/perf/util/map.c
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@@ -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;