From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753301Ab3KKWQH (ORCPT ); Mon, 11 Nov 2013 17:16:07 -0500 Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.225]:60368 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752311Ab3KKWPy (ORCPT ); Mon, 11 Nov 2013 17:15:54 -0500 Date: Mon, 11 Nov 2013 17:15:46 -0500 From: Steven Rostedt To: LKML Cc: Ingo Molnar , Andrew Morton , kbuild test robot Subject: [for-next][PATCH] tracing: Add rcu annotation for syscall trace descriptors Message-ID: <20131111171546.30b49fbf@gandalf.local.home> X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.20; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-RR-Connecting-IP: 107.14.168.118:25 X-Cloudmark-Score: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next Head SHA1: 3a81a5210b7d33bb6d836b4c4952a54166a336f3 Steven Rostedt (Red Hat) (1): tracing: Add rcu annotation for syscall trace descriptors ---- kernel/trace/trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --------------------------- commit 3a81a5210b7d33bb6d836b4c4952a54166a336f3 Author: Steven Rostedt (Red Hat) Date: Mon Nov 11 11:47:06 2013 -0500 tracing: Add rcu annotation for syscall trace descriptors sparse complains about the enter/exit_sysycall_files[] variables being dereferenced with rcu_dereference_sched(). The fields need to be annotated with __rcu. Reported-by: kbuild test robot Signed-off-by: Steven Rostedt diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 11a04d6..7ca1993 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -192,8 +192,8 @@ struct trace_array { #ifdef CONFIG_FTRACE_SYSCALLS int sys_refcount_enter; int sys_refcount_exit; - struct ftrace_event_file *enter_syscall_files[NR_syscalls]; - struct ftrace_event_file *exit_syscall_files[NR_syscalls]; + struct ftrace_event_file __rcu *enter_syscall_files[NR_syscalls]; + struct ftrace_event_file __rcu *exit_syscall_files[NR_syscalls]; #endif int stop_count; int clock_id;