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| author | Jiri Olsa <jolsa@kernel.org> | 2015-06-26 12:29:06 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-26 17:03:41 +0300 |
| commit | 62eea464380633b88902da35bf9cbd8515289703 (patch) | |
| tree | a3dd5b2c6477c6a6cd2442be7fa702aac8e58c5d /tools/perf | |
| parent | d0cc439b30be638c3a606767e9469c300d397433 (diff) | |
| download | linux-62eea464380633b88902da35bf9cbd8515289703.tar.xz | |
perf thread_map: Introduce thread_map__reset function
We need to reset newly allocated 'struct thread_map_data' entries,
because we will introduce new comm memeber, which will get set later or
not at all.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-2-git-send-email-jolsa@kernel.org
[ Use sizeof(map->map[0]) to be independent of the array entry type ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/thread_map.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c index 368cc58c6892..ed76c179cf4e 100644 --- a/tools/perf/util/thread_map.c +++ b/tools/perf/util/thread_map.c @@ -21,11 +21,26 @@ static int filter(const struct dirent *dir) return 1; } +static void thread_map__reset(struct thread_map *map, int start, int nr) +{ + size_t size = (nr - start) * sizeof(map->map[0]); + + memset(&map->map[start], 0, size); +} + static struct thread_map *thread_map__realloc(struct thread_map *map, int nr) { size_t size = sizeof(*map) + sizeof(map->map[0]) * nr; + int start = map ? map->nr : 0; - return realloc(map, size); + map = realloc(map, size); + /* + * We only realloc to add more items, let's reset new items. + */ + if (map) + thread_map__reset(map, start, nr); + + return map; } #define thread_map__alloc(__nr) thread_map__realloc(NULL, __nr) |