Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964908AbbDWNsZ (ORCPT ); Thu, 23 Apr 2015 09:48:25 -0400 Received: from mail7.hitachi.co.jp ([133.145.228.42]:37278 "EHLO mail7.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934337AbbDWNsW (ORCPT ); Thu, 23 Apr 2015 09:48:22 -0400 X-AuditID: 85900ec0-a32cbb9000003d4c-f5-5538f819e606 Subject: [PATCH perf/core v2 2/8] [BUGFIX] perf probe: Remove all probes matches given pattern at once From: Masami Hiramatsu To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , Linux Kernel Mailing List , David Ahern , namhyung@kernel.org, Jiri Olsa , Ingo Molnar Date: Thu, 23 Apr 2015 22:46:14 +0900 Message-ID: <20150423134614.26128.18106.stgit@localhost.localdomain> In-Reply-To: <20150423134610.26128.82557.stgit@localhost.localdomain> References: <20150423134610.26128.82557.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3060 Lines: 106 Fix perf-probe --del option to delete all matched probes in both of kprobes and uprobes at once. When we have 2 or more events on different binaries as below, ---- # ./perf probe -l probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) probe_libc:malloc (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.17 ---- Trying to remove all event with '*' just removes kprobe events at first. ---- # ./perf probe -d \* Removed event: probe:vfs_read ---- And in 2nd try, it removes all uprobe events. ---- # ./perf probe -d \* Removed event: probe_libc:malloc ---- This fixes to remove all event at once as below. ---- # ./perf probe -d \* Removed event: probe:vfs_read Removed event: probe_libc:malloc ---- Signed-off-by: Masami Hiramatsu Reported-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index d8bb616..291bf23 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2686,7 +2686,7 @@ static int del_trace_probe_event(int fd, const char *buf, struct strlist *namelist) { struct str_node *ent, *n; - int ret = -1; + int ret = -ENOENT; if (strpbrk(buf, "*?")) { /* Glob-exp */ strlist__for_each_safe(ent, n, namelist) @@ -2710,7 +2710,7 @@ static int del_trace_probe_event(int fd, const char *buf, int del_perf_probe_events(struct strlist *dellist) { - int ret = -1, ufd = -1, kfd = -1; + int ret = -1, ret2, ufd = -1, kfd = -1; char buf[128]; const char *group, *event; char *p, *str; @@ -2731,8 +2731,10 @@ int del_perf_probe_events(struct strlist *dellist) goto error; } - if (namelist == NULL && unamelist == NULL) + if (namelist == NULL && unamelist == NULL) { + ret = -ENOENT; goto error; + } strlist__for_each(ent, dellist) { str = strdup(ent->s); @@ -2759,17 +2761,23 @@ int del_perf_probe_events(struct strlist *dellist) } pr_debug("Group: %s, Event: %s\n", group, event); + free(str); + ret = ret2 = -ENOENT; if (namelist) ret = del_trace_probe_event(kfd, buf, namelist); - if (unamelist && ret != 0) - ret = del_trace_probe_event(ufd, buf, unamelist); - - if (ret != 0) - pr_info("Info: Event \"%s\" does not exist.\n", buf); + if ((ret >= 0 || ret == -ENOENT) && unamelist) + ret2 = del_trace_probe_event(ufd, buf, unamelist); - free(str); + /* Since we can remove probes which already removed, don't check it */ + if (ret == -ENOENT && ret2 == -ENOENT) + pr_debug("Event \"%s\" does not exist.\n", buf); + else if (ret < 0 || ret2 < 0) { + if (ret >= 0) + ret = ret2; + break; + } } error: -- 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/