Messages in this thread Patch in this message | | | Date | Sat, 19 Jun 2010 11:54:36 +0800 | From | Gui Jianfeng <> | Subject | [PATCH] perf: close the opened directories. |
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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 direcotries at initialization time, but forgets to close them. Here is the fix.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> --- tools/perf/util/symbol.c | 18 +++++++++++------- 1 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 7fd6b15..a00dcad 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 +1466,10 @@ 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; + if (map_groups__set_modules_path_dir(self, path) < 0) { + ret = -1; + goto out; + } } else { char *dot = strrchr(dent->d_name, '.'), dso_name[PATH_MAX]; @@ -1487,17 +1490,18 @@ 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) -- 1.6.5.2
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