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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-16 05:29:51 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-16 16:34:38 +0300 |
commit | 5c24b67aae72f54c5d2a6898be4bae9726df63bb (patch) | |
tree | 14cf53530c0b85b7e1cb5599c62be9a059ab978b /tools/perf/util/map.c | |
parent | 35a23ff928b066b00a826d0a9ed9411b8ab479ef (diff) | |
download | linux-5c24b67aae72f54c5d2a6898be4bae9726df63bb.tar.xz |
perf tools: Replace map->referenced & maps->removed_maps with map->refcnt
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>
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r-- | tools/perf/util/map.c | 58 |
1 files changed, 2 insertions, 56 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 1241ab989cf5..b5a5e9c02437 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -137,7 +137,6 @@ void map__init(struct map *map, enum map_type type, map->unmap_ip = map__unmap_ip; RB_CLEAR_NODE(&map->rb_node); map->groups = NULL; - map->referenced = false; map->erange_warned = false; atomic_set(&map->refcnt, 1); } @@ -439,7 +438,6 @@ static void maps__init(struct maps *maps) { maps->entries = RB_ROOT; pthread_rwlock_init(&maps->lock, NULL); - INIT_LIST_HEAD(&maps->removed_maps); } void map_groups__init(struct map_groups *mg, struct machine *machine) @@ -466,21 +464,10 @@ static void __maps__purge(struct maps *maps) } } -static void __maps__purge_removed_maps(struct maps *maps) -{ - struct map *pos, *n; - - list_for_each_entry_safe(pos, n, &maps->removed_maps, node) { - list_del_init(&pos->node); - map__put(pos); - } -} - static void maps__exit(struct maps *maps) { pthread_rwlock_wrlock(&maps->lock); __maps__purge(maps); - __maps__purge_removed_maps(maps); pthread_rwlock_unlock(&maps->lock); } @@ -499,8 +486,6 @@ bool map_groups__empty(struct map_groups *mg) for (i = 0; i < MAP__NR_TYPES; ++i) { if (maps__first(&mg->maps[i])) return false; - if (!list_empty(&mg->maps[i].removed_maps)) - return false; } return true; @@ -621,7 +606,7 @@ size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type, return printed += maps__fprintf(&mg->maps[type], fp); } -static size_t map_groups__fprintf_maps(struct map_groups *mg, FILE *fp) +size_t map_groups__fprintf(struct map_groups *mg, FILE *fp) { size_t printed = 0, i; for (i = 0; i < MAP__NR_TYPES; ++i) @@ -629,39 +614,6 @@ static size_t map_groups__fprintf_maps(struct map_groups *mg, FILE *fp) return printed; } -static size_t __map_groups__fprintf_removed_maps(struct map_groups *mg, - enum map_type type, FILE *fp) -{ - struct map *pos; - size_t printed = 0; - - list_for_each_entry(pos, &mg->maps[type].removed_maps, node) { - printed += fprintf(fp, "Map:"); - printed += map__fprintf(pos, fp); - if (verbose > 1) { - printed += dso__fprintf(pos->dso, type, fp); - printed += fprintf(fp, "--\n"); - } - } - return printed; -} - -static size_t map_groups__fprintf_removed_maps(struct map_groups *mg, - FILE *fp) -{ - size_t printed = 0, i; - for (i = 0; i < MAP__NR_TYPES; ++i) - printed += __map_groups__fprintf_removed_maps(mg, i, fp); - return printed; -} - -size_t map_groups__fprintf(struct map_groups *mg, FILE *fp) -{ - size_t printed = map_groups__fprintf_maps(mg, fp); - printed += fprintf(fp, "Removed maps:\n"); - return printed + map_groups__fprintf_removed_maps(mg, fp); -} - static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp) { struct rb_root *root; @@ -719,13 +671,7 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp map__fprintf(after, fp); } put_map: - /* - * If we have references, just move them to a separate list. - */ - if (pos->referenced) - list_add_tail(&pos->node, &maps->removed_maps); - else - map__put(pos); + map__put(pos); if (err) goto out; |