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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
View File

@ -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;

9
tools/perf/util/map.h
View File

@ -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);

2
tools/perf/util/thread.c
View File

@ -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);