Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753644AbZJQKDm (ORCPT ); Sat, 17 Oct 2009 06:03:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753611AbZJQKDl (ORCPT ); Sat, 17 Oct 2009 06:03:41 -0400 Received: from hera.kernel.org ([140.211.167.34]:36582 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753591AbZJQKDi (ORCPT ); Sat, 17 Oct 2009 06:03:38 -0400 Date: Sat, 17 Oct 2009 10:02:54 GMT From: tip-bot for Masami Hiramatsu Cc: mingo@redhat.com, peterz@infradead.org, fweisbec@gmail.com, rostedt@goodmis.org, ak@linux.intel.com, jbaron@redhat.com, tglx@linutronix.de, laijs@cn.fujitsu.com, mhiramat@redhat.com, linux-kernel@vger.kernel.org, hpa@zytor.com, fche@redhat.com, jkenisto@us.ibm.com, tzanussi@gmail.com, lizf@cn.fujitsu.com, hch@infradead.org, ananth@in.ibm.com, srikar@linux.vnet.ibm.com, mingo@elte.hu, prasad@linux.vnet.ibm.com Reply-To: mingo@redhat.com, peterz@infradead.org, fweisbec@gmail.com, rostedt@goodmis.org, ak@linux.intel.com, jbaron@redhat.com, tglx@linutronix.de, laijs@cn.fujitsu.com, mhiramat@redhat.com, linux-kernel@vger.kernel.org, hpa@zytor.com, fche@redhat.com, jkenisto@us.ibm.com, tzanussi@gmail.com, lizf@cn.fujitsu.com, hch@infradead.org, ananth@in.ibm.com, srikar@linux.vnet.ibm.com, mingo@elte.hu, prasad@linux.vnet.ibm.com In-Reply-To: <20090925182054.10157.55219.stgit@omoto> References: <20090925182054.10157.55219.stgit@omoto> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/probes] tracing/ftrace: Fix to check create_event_dir() when adding new events Message-ID: Git-Commit-ID: 88f70d7590538e427c8405a2e02ac2624847386c X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Sat, 17 Oct 2009 10:02:55 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3302 Lines: 93 Commit-ID: 88f70d7590538e427c8405a2e02ac2624847386c Gitweb: http://git.kernel.org/tip/88f70d7590538e427c8405a2e02ac2624847386c Author: Masami Hiramatsu AuthorDate: Fri, 25 Sep 2009 11:20:54 -0700 Committer: Frederic Weisbecker CommitDate: Sat, 3 Oct 2009 03:04:58 +0200 tracing/ftrace: Fix to check create_event_dir() when adding new events Check result of event_create_dir() and add ftrace_event_call to ftrace_events list only if it is succeeded. Thanks to Li for pointing it out. Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt Acked-by: Ingo Molnar Cc: Jim Keniston Cc: Ananth N Mavinakayanahalli Cc: Andi Kleen Cc: Christoph Hellwig Cc: Frank Ch. Eigler Cc: H. Peter Anvin Cc: Jason Baron Cc: K.Prasad Cc: Lai Jiangshan Cc: Li Zefan Cc: Peter Zijlstra Cc: Srikar Dronamraju Cc: Tom Zanussi LKML-Reference: <20090925182054.10157.55219.stgit@omoto> Signed-off-by: Frederic Weisbecker --- kernel/trace/trace_events.c | 25 ++++++++++++++----------- 1 files changed, 14 insertions(+), 11 deletions(-) diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index a4b7c9a..155b5d5 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -957,12 +957,12 @@ static int __trace_add_event_call(struct ftrace_event_call *call) if (!d_events) return -ENOENT; - list_add(&call->list, &ftrace_events); ret = event_create_dir(call, d_events, &ftrace_event_id_fops, &ftrace_enable_fops, &ftrace_event_filter_fops, &ftrace_event_format_fops); - if (ret < 0) - list_del(&call->list); + if (!ret) + list_add(&call->list, &ftrace_events); + return ret; } @@ -1124,10 +1124,11 @@ static void trace_module_add_events(struct module *mod) return; } call->mod = mod; - list_add(&call->list, &ftrace_events); - event_create_dir(call, d_events, - &file_ops->id, &file_ops->enable, - &file_ops->filter, &file_ops->format); + ret = event_create_dir(call, d_events, + &file_ops->id, &file_ops->enable, + &file_ops->filter, &file_ops->format); + if (!ret) + list_add(&call->list, &ftrace_events); } } @@ -1267,10 +1268,12 @@ static __init int event_trace_init(void) continue; } } - list_add(&call->list, &ftrace_events); - event_create_dir(call, d_events, &ftrace_event_id_fops, - &ftrace_enable_fops, &ftrace_event_filter_fops, - &ftrace_event_format_fops); + ret = event_create_dir(call, d_events, &ftrace_event_id_fops, + &ftrace_enable_fops, + &ftrace_event_filter_fops, + &ftrace_event_format_fops); + if (!ret) + list_add(&call->list, &ftrace_events); } while (true) { -- 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/