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 <wangn...@huawei.com>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: He Kuang <heku...@huawei.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Masami Hiramatsu <mhira...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Zefan Li <lize...@huawei.com>
Cc: Nilay Vaish <nilayva...@gmail.com>
Cc: pi3or...@163.com
---
tools/perf/util/evlist.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index a4137e0..1462085 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;
}
--
1.8.3.4
