From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754085AbdDMODo (ORCPT ); Thu, 13 Apr 2017 10:03:44 -0400 Received: from mail-pg0-f53.google.com ([74.125.83.53]:36466 "EHLO mail-pg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754049AbdDMODm (ORCPT ); Thu, 13 Apr 2017 10:03:42 -0400 From: Alex Shi To: peterz@infradead.org, mingo@redhat.com, corbet@lwn.net, linux-kernel@vger.kernel.org (open list:LOCKING PRIMITIVES) Cc: linux-kernel@vger.kernel.org, Alex Shi , Steven Rostedt , Sebastian Siewior , Thomas Gleixner Subject: [PATCH 3/3] rtmutex: remove unnecessary adjust prio Date: Thu, 13 Apr 2017 22:02:54 +0800 Message-Id: <1492092174-31734-4-git-send-email-alex.shi@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1492092174-31734-1-git-send-email-alex.shi@linaro.org> References: <1492092174-31734-1-git-send-email-alex.shi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We don't need to adjust prio before new pi_waiter adding. The prio only need update after pi_waiter change or task normal_prio change. Signed-off-by: Alex Shi Cc: Steven Rostedt Cc: Sebastian Siewior To: linux-kernel@vger.kernel.org To: Ingo Molnar To: Peter Zijlstra Cc: Thomas Gleixner --- kernel/locking/rtmutex.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index 05ff685..3ee8bc1 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -973,7 +973,6 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock, return -EDEADLK; raw_spin_lock(&task->pi_lock); - __rt_mutex_adjust_prio(task); waiter->task = task; waiter->lock = lock; waiter->prio = task->prio; -- 1.9.1