diff options
author | Wang Nan <wangnan0@huawei.com> | 2016-07-14 11:34:39 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-15 23:27:48 +0300 |
commit | b2cb615d8aaba520fe351ff456f6c7730828b3fe (patch) | |
tree | bd358790cbd9436c49315be0720528684dd44c38 /tools/perf/util/evlist.c | |
parent | a1f72618346a4e7ce9cff6aec1a62737d5d08763 (diff) | |
download | linux-b2cb615d8aaba520fe351ff456f6c7730828b3fe.tar.xz |
perf evlist: Introduce backward_mmap array for evlist
Add backward_mmap to evlist, free it together with normal mmap.
Improve perf_evlist__pick_pc(), search backward_mmap if evlist->mmap is
not available.
This patch doesn't alloc this array. It will be allocated conditionally
in the following commits.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1468485287-33422-8-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r-- | tools/perf/util/evlist.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 54ae0a0bc22c..24927e111d17 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -123,6 +123,7 @@ static void perf_evlist__purge(struct perf_evlist *evlist) void perf_evlist__exit(struct perf_evlist *evlist) { zfree(&evlist->mmap); + zfree(&evlist->backward_mmap); fdarray__exit(&evlist->pollfd); } @@ -973,17 +974,20 @@ static void perf_evlist__munmap_nofree(struct perf_evlist *evlist) { int i; - if (evlist->mmap == NULL) - return; + if (evlist->mmap) + for (i = 0; i < evlist->nr_mmaps; i++) + perf_mmap__munmap(&evlist->mmap[i]); - for (i = 0; i < evlist->nr_mmaps; i++) - perf_mmap__munmap(&evlist->mmap[i]); + if (evlist->backward_mmap) + for (i = 0; i < evlist->nr_mmaps; i++) + perf_mmap__munmap(&evlist->backward_mmap[i]); } void perf_evlist__munmap(struct perf_evlist *evlist) { perf_evlist__munmap_nofree(evlist); zfree(&evlist->mmap); + zfree(&evlist->backward_mmap); } static struct perf_mmap *perf_evlist__alloc_mmap(struct perf_evlist *evlist) |