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perf tools: Replace map->referenced & maps->removed_maps with map->refcnt

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Use just reference counts, so that when no more hist_entry instances
references a map and the thread instance goes away by processing a
PERF_RECORD_EXIT, we can delete the maps.

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-oym7lfhcc7ss6xpz44h7nbxs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2015-06-15 23:29:51 -03:00
parent 35a23ff928
commit 5c24b67aae
3 changed files with 32 additions and 73 deletions
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10
tools/perf/util/map.h
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@@ -34,7 +34,6 @@ struct map {
u64 start;
u64 end;
u8 /* enum map_type */ type;
bool referenced;
bool erange_warned;
u32 priv;
u32 prot;
@@ -63,7 +62,6 @@ struct kmap {
struct maps {
struct rb_root entries;
pthread_rwlock_t lock;
struct list_head removed_maps;
};
struct map_groups {
@@ -161,6 +159,14 @@ static inline struct map *map__get(struct map *map)
void map__put(struct map *map);
static inline void __map__zput(struct map **map)
{
map__put(*map);
*map = NULL;
}
#define map__zput(map) __map__zput(&map)
int map__overlap(struct map *l, struct map *r);
size_t map__fprintf(struct map *map, FILE *fp);
size_t map__fprintf_dsoname(struct map *map, FILE *fp);