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| author | Wang Nan <wangnan0@huawei.com> | 2016-07-14 11:34:37 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-15 23:27:47 +0300 |
| commit | 4876075b3205af992bf1012f6d6fbc03593d55b9 (patch) | |
| tree | d60d7f96f09b697c6dc7dad009dec1b29df57648 /tools | |
| parent | a4ea0ec4f24a721bea5447a27ad5fbcb89275bae (diff) | |
| download | linux-4876075b3205af992bf1012f6d6fbc03593d55b9.tar.xz | |
perf evlist: Record mmap cookie into fdarray private field
Insetad of saving a index into fdarray entries private field, save the
corresponding 'struct perf_mmap' pointer, and release them directly
using perf_mmap__put().
Following commits introduce multiple mmap arrays to evlist. Without this
patch, perf_evlist__munmap_filtered() is unable to retrive correct
'struct perf_mmap' pointer.
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/1468485287-33422-6-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/evlist.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a4137e02eab8..1462085a8618 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -30,6 +30,7 @@ static void perf_evlist__mmap_put(struct perf_evlist *evlist, int idx); static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx); static void perf_mmap__munmap(struct perf_mmap *map); +static void perf_mmap__put(struct perf_mmap *map); #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) @@ -466,7 +467,8 @@ int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) return 0; } -static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, int idx, short revent) +static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, + struct perf_mmap *map, short revent) { int pos = fdarray__add(&evlist->pollfd, fd, revent | POLLERR | POLLHUP); /* @@ -474,7 +476,7 @@ static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, int idx * close the associated evlist->mmap[] entry. */ if (pos >= 0) { - evlist->pollfd.priv[pos].idx = idx; + evlist->pollfd.priv[pos].ptr = map; fcntl(fd, F_SETFL, O_NONBLOCK); } @@ -484,15 +486,16 @@ static int __perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, int idx int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) { - return __perf_evlist__add_pollfd(evlist, fd, -1, POLLIN); + return __perf_evlist__add_pollfd(evlist, fd, NULL, POLLIN); } static void perf_evlist__munmap_filtered(struct fdarray *fda, int fd, void *arg __maybe_unused) { - struct perf_evlist *evlist = container_of(fda, struct perf_evlist, pollfd); + struct perf_mmap *map = fda->priv[fd].ptr; - perf_evlist__mmap_put(evlist, fda->priv[fd].idx); + if (map) + perf_mmap__put(map); } int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask) @@ -1098,7 +1101,7 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, * Therefore don't add it for polling. */ if (!evsel->system_wide && - __perf_evlist__add_pollfd(evlist, fd, idx, revent) < 0) { + __perf_evlist__add_pollfd(evlist, fd, &evlist->mmap[idx], revent) < 0) { perf_evlist__mmap_put(evlist, idx); return -1; } |