From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751390AbdE3VmV (ORCPT ); Tue, 30 May 2017 17:42:21 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:55847 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751340AbdE3VmS (ORCPT ); Tue, 30 May 2017 17:42:18 -0400 Message-Id: <20170530211657.747567162@linutronix.de> User-Agent: quilt/0.63-1 Date: Tue, 30 May 2017 23:15:58 +0200 From: Thomas Gleixner To: LKML Cc: John Stultz , Peter Zijlstra , Ingo Molnar Subject: [patch 25/26] alarmtimer: Implement arm callback References: <20170530211533.216608851@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=alarmtimer--Implement-arm-callback.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Preparatory change to utilize the common posix timer mechanisms. Signed-off-by: Thomas Gleixner --- kernel/time/alarmtimer.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) Index: b/kernel/time/alarmtimer.c =================================================================== --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -582,6 +582,27 @@ static int alarm_timer_try_to_cancel(str } /** + * alarm_timer_arm - Posix timer callback to arm a timer + * @timr: Pointer to the posixtimer data struct + * @expires: The new expiry time + * @absolute: Expiry value is absolute time + * @sigev_none: Posix timer does not deliver signals + */ +static void alarm_timer_arm(struct k_itimer *timr, ktime_t expires, + bool absolute, bool sigev_none) +{ + struct alarm *alarm = &timr->it.alarm.alarmtimer; + struct alarm_base *base = &alarm_bases[alarm->type]; + + if (!absolute) + expires = ktime_add_safe(expires, base->gettime()); + if (sigev_none) + alarm->node.expires = expires; + else + alarm_start(&timr->it.alarm.alarmtimer, expires); +} + +/** * alarm_clock_getres - posix getres interface * @which_clock: clockid * @tp: timespec to fill @@ -908,6 +929,7 @@ const struct k_clock alarm_clock = { .timer_set = alarm_timer_set, .timer_del = alarm_timer_del, .timer_get = alarm_timer_get, + .timer_arm = alarm_timer_arm, .timer_rearm = alarm_timer_rearm, .timer_forward = alarm_timer_forward, .timer_remaining = alarm_timer_remaining,