From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751482AbcGNQFV (ORCPT ); Thu, 14 Jul 2016 12:05:21 -0400 Received: from www.linutronix.de ([62.245.132.108]:45232 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751149AbcGNQFQ (ORCPT ); Thu, 14 Jul 2016 12:05:16 -0400 From: Sebastian Andrzej Siewior To: linux-rt-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de, Steven Rostedt Subject: [RT PATCH 2/2] timers: wakeup all timer waiters without holding the base lock Date: Thu, 14 Jul 2016 18:05:04 +0200 Message-Id: <1468512304-15310-2-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1468512304-15310-1-git-send-email-bigeasy@linutronix.de> References: <1468512304-15310-1-git-send-email-bigeasy@linutronix.de> X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There should be no need to hold the base lock during the wakeup. There should be no boosting involved, the wakeup list has its own lock so it should be safe to do this without the lock. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- kernel/time/timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index b3c3d3a6216f..716ef84a5d87 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1313,8 +1313,8 @@ static inline void __run_timers(struct tvec_base *base) } } } - wakeup_timer_waiters(base); spin_unlock_irq(&base->lock); + wakeup_timer_waiters(base); } #ifdef CONFIG_NO_HZ_COMMON -- 2.8.1