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| author | Gui Jianfeng <guijianfeng@cn.fujitsu.com> | 2010-06-24 15:04:02 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-07-16 14:16:47 -0300 |
| commit | 74534341c1214ac5993904680616afe698dde3b6 (patch) | |
| tree | 6126c003df7ab245b5a90f677b5206930e074cf7 | |
| parent | 58c3439083f8fde61de842c93d1407f0f881cd92 (diff) | |
| download | blackbird-op-linux-74534341c1214ac5993904680616afe698dde3b6.tar.gz blackbird-op-linux-74534341c1214ac5993904680616afe698dde3b6.zip | |
perf symbols: Fix directory descriptor leaking
When I ran "perf kvm ... top", I encountered the following error output.
Error: perfcounter syscall returned with -1 (Too many open files)
Fatal: No CONFIG_PERF_EVENTS=y kernel support configured?
Looking into perf, I found perf opens too many directories at
initialization time, but forgets to close them. Here is the fix.
LKML-Reference: <4C230362.5080704@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/symbol.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index b63e5713849f..5b276833e2bf 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1443,6 +1443,7 @@ static int map_groups__set_modules_path_dir(struct map_groups *self, { struct dirent *dent; DIR *dir = opendir(dir_name); + int ret = 0; if (!dir) { pr_debug("%s: cannot open %s dir\n", __func__, dir_name); @@ -1465,8 +1466,9 @@ static int map_groups__set_modules_path_dir(struct map_groups *self, snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); - if (map_groups__set_modules_path_dir(self, path) < 0) - goto failure; + ret = map_groups__set_modules_path_dir(self, path); + if (ret < 0) + goto out; } else { char *dot = strrchr(dent->d_name, '.'), dso_name[PATH_MAX]; @@ -1487,17 +1489,18 @@ static int map_groups__set_modules_path_dir(struct map_groups *self, dir_name, dent->d_name); long_name = strdup(path); - if (long_name == NULL) - goto failure; + if (long_name == NULL) { + ret = -1; + goto out; + } dso__set_long_name(map->dso, long_name); dso__kernel_module_get_build_id(map->dso, ""); } } - return 0; -failure: +out: closedir(dir); - return -1; + return ret; } static char *get_kernel_version(const char *root_dir) |
