Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752942Ab0FSD4K (ORCPT ); Fri, 18 Jun 2010 23:56:10 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:52751 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752427Ab0FSD4I (ORCPT ); Fri, 18 Jun 2010 23:56:08 -0400 Message-ID: <4C1C3F7C.4030607@cn.fujitsu.com> Date: Sat, 19 Jun 2010 11:54:36 +0800 From: Gui Jianfeng User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: acme@ghostprotocols.net, mingo@elte.hu CC: Yanmin Zhang , linux kernel mailing list Subject: [PATCH] perf: close the opened directories. Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2084 Lines: 71 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 --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/