From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753235Ab1A0PAX (ORCPT ); Thu, 27 Jan 2011 10:00:23 -0500 Received: from mailout-de.gmx.net ([213.165.64.23]:33884 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753185Ab1A0PAT (ORCPT ); Thu, 27 Jan 2011 10:00:19 -0500 X-Authenticated: #911537 X-Provags-ID: V01U2FsdGVkX1+V8U0UFGeVjcnpPbjpMZ6wBQFU6BqFMUBGCtv4/j YjbByFNEJMt/h0 Subject: [PATCH v2 16/20] mn10300: switch do_timer() to xtimer_update() To: LKML From: Torben Hohn Cc: hch@infradead.org, Peter Zijlstra , johnstul@us.ibm.com, David Howells , yong.zhang0@gmail.com, Thomas Gleixner , Koichi Yasutake Date: Thu, 27 Jan 2011 16:00:12 +0100 Message-ID: <20110127150011.23248.62040.stgit@localhost> In-Reply-To: <20110127145741.23248.68098.stgit@localhost> References: <20110127145741.23248.68098.stgit@localhost> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org xtimer_update() properly takes the xtime_lock. mn10300_last_tsc is only accessed from this function. Cc: David Howells Cc: Koichi Yasutake Signed-off-by: Torben Hohn --- arch/mn10300/kernel/time.c | 6 +----- 1 files changed, 1 insertions(+), 5 deletions(-) diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c index 75da468..5b95500 100644 --- a/arch/mn10300/kernel/time.c +++ b/arch/mn10300/kernel/time.c @@ -104,8 +104,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) unsigned tsc, elapse; irqreturn_t ret; - write_seqlock(&xtime_lock); - while (tsc = get_cycles(), elapse = tsc - mn10300_last_tsc, /* time elapsed since last * tick */ @@ -114,11 +112,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) mn10300_last_tsc += MN10300_TSC_PER_HZ; /* advance the kernel's time tracking system */ - do_timer(1); + xtime_update(1); } - write_sequnlock(&xtime_lock); - ret = local_timer_interrupt(); #ifdef CONFIG_SMP send_IPI_allbutself(LOCAL_TIMER_IPI);