Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754738AbZKHRHv (ORCPT ); Sun, 8 Nov 2009 12:07:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754655AbZKHRHu (ORCPT ); Sun, 8 Nov 2009 12:07:50 -0500 Received: from hera.kernel.org ([140.211.167.34]:58726 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754653AbZKHRHt (ORCPT ); Sun, 8 Nov 2009 12:07:49 -0500 Date: Sun, 8 Nov 2009 17:06:51 GMT From: tip-bot for Clark Williams Cc: linux-kernel@vger.kernel.org, acme@redhat.com, hpa@zytor.com, mingo@redhat.com, williams@redhat.com, peterz@infradead.org, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, acme@redhat.com, linux-kernel@vger.kernel.org, williams@redhat.com, peterz@infradead.org, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <20091101155720.624cc87e@torg> References: <20091101155720.624cc87e@torg> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf tools: Modify perf routines to use new debugfs routines Message-ID: Git-Commit-ID: 549104f22b3cd4761145eb5fba6ee4d59822da61 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4271 Lines: 148 Commit-ID: 549104f22b3cd4761145eb5fba6ee4d59822da61 Gitweb: http://git.kernel.org/tip/549104f22b3cd4761145eb5fba6ee4d59822da61 Author: Clark Williams AuthorDate: Sun, 8 Nov 2009 09:03:07 -0600 Committer: Ingo Molnar CommitDate: Sun, 8 Nov 2009 18:01:35 +0100 perf tools: Modify perf routines to use new debugfs routines modify perf.c get_debugfs_mntpnt() to use the util/debugfs.c debugfs_find_mountpoint() modify util/parse-events.c to use debugfs_valid_mountpoint(). Signed-off-by: Clark Williams Cc: Arnaldo Carvalho de Melo Cc: Peter Zijlstra LKML-Reference: <20091101155720.624cc87e@torg> Signed-off-by: Ingo Molnar --- tools/perf/perf.c | 44 +++++---------------------------------- tools/perf/util/parse-events.c | 17 +++----------- 2 files changed, 10 insertions(+), 51 deletions(-) diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 624e62d..601f403 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -14,6 +14,7 @@ #include "util/run-command.h" #include "util/parse-events.h" #include "util/string.h" +#include "util/debugfs.h" const char perf_usage_string[] = "perf [--version] [--help] COMMAND [ARGS]"; @@ -382,45 +383,12 @@ static int run_argv(int *argcp, const char ***argv) /* mini /proc/mounts parser: searching for "^blah /mount/point debugfs" */ static void get_debugfs_mntpt(void) { - FILE *file; - char fs_type[100]; - char debugfs[MAXPATHLEN]; + const char *path = debugfs_find_mountpoint(); - /* - * try the standard location - */ - if (valid_debugfs_mount("/sys/kernel/debug/") == 0) { - strcpy(debugfs_mntpt, "/sys/kernel/debug/"); - return; - } - - /* - * try the sane location - */ - if (valid_debugfs_mount("/debug/") == 0) { - strcpy(debugfs_mntpt, "/debug/"); - return; - } - - /* - * give up and parse /proc/mounts - */ - file = fopen("/proc/mounts", "r"); - if (file == NULL) - return; - - while (fscanf(file, "%*s %" - STR(MAXPATHLEN) - "s %99s %*s %*d %*d\n", - debugfs, fs_type) == 2) { - if (strcmp(fs_type, "debugfs") == 0) - break; - } - fclose(file); - if (strcmp(fs_type, "debugfs") == 0) { - strncpy(debugfs_mntpt, debugfs, MAXPATHLEN); - debugfs_mntpt[MAXPATHLEN - 1] = '\0'; - } + if (path) + strncpy(debugfs_mntpt, path, sizeof(debugfs_mntpt)); + else + debugfs_mntpt[0] = '\0'; } int main(int argc, const char **argv) diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 31baa5a..097938a 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -7,6 +7,7 @@ #include "string.h" #include "cache.h" #include "header.h" +#include "debugfs.h" int nr_counters; @@ -149,16 +150,6 @@ static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir) #define MAX_EVENT_LENGTH 512 -int valid_debugfs_mount(const char *debugfs) -{ - struct statfs st_fs; - - if (statfs(debugfs, &st_fs) < 0) - return -ENOENT; - else if (st_fs.f_type != (long) DEBUGFS_MAGIC) - return -ENOENT; - return 0; -} struct tracepoint_path *tracepoint_id_to_path(u64 config) { @@ -171,7 +162,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config) char evt_path[MAXPATHLEN]; char dir_path[MAXPATHLEN]; - if (valid_debugfs_mount(debugfs_path)) + if (debugfs_valid_mountpoint(debugfs_path)) return NULL; sys_dir = opendir(debugfs_path); @@ -510,7 +501,7 @@ static enum event_result parse_tracepoint_event(const char **strp, char sys_name[MAX_EVENT_LENGTH]; unsigned int sys_length, evt_length; - if (valid_debugfs_mount(debugfs_path)) + if (debugfs_valid_mountpoint(debugfs_path)) return 0; evt_name = strchr(*strp, ':'); @@ -788,7 +779,7 @@ static void print_tracepoint_events(void) char evt_path[MAXPATHLEN]; char dir_path[MAXPATHLEN]; - if (valid_debugfs_mount(debugfs_path)) + if (debugfs_valid_mountpoint(debugfs_path)) return; sys_dir = opendir(debugfs_path); -- 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/