From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751894AbaCWTKL (ORCPT ); Sun, 23 Mar 2014 15:10:11 -0400 Received: from mail-pb0-f48.google.com ([209.85.160.48]:57209 "EHLO mail-pb0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751853AbaCWTKH (ORCPT ); Sun, 23 Mar 2014 15:10:07 -0400 From: Monam Agarwal To: mathieu.desnoyers@efficios.com, rostedt@goodmis.org, keun-o.park@windriver.com, linux-kernel@vger.kernel.org Subject: [PATCH] kernel: Use RCU_INIT_POINTER(x, NULL) in tracepoint.c Date: Mon, 24 Mar 2014 00:39:08 +0530 Message-Id: <1395601748-12313-1-git-send-email-monamagarwal123@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal --- kernel/tracepoint.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index 031cc56..72dfa96 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -291,7 +291,7 @@ static void disable_tracepoint(struct tracepoint *elem) if (static_key_enabled(&elem->key)) static_key_slow_dec(&elem->key); - rcu_assign_pointer(elem->funcs, NULL); + RCU_INIT_POINTER(elem->funcs, NULL); } /** -- 1.7.9.5