From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757204Ab3K0OLu (ORCPT ); Wed, 27 Nov 2013 09:11:50 -0500 Received: from terminus.zytor.com ([198.137.202.10]:47818 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757104Ab3K0OLq (ORCPT ); Wed, 27 Nov 2013 09:11:46 -0500 Date: Wed, 27 Nov 2013 06:10:59 -0800 From: tip-bot for Dario Faggioli Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, pjt@google.com, raistlin@linux.it, tglx@linutronix.de, juri.lelli@gmail.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, pjt@google.com, peterz@infradead.org, raistlin@linux.it, tglx@linutronix.de, juri.lelli@gmail.com In-Reply-To: <1383831828-15501-2-git-send-email-juri.lelli@gmail.com> References: <1383831828-15501-2-git-send-email-juri.lelli@gmail.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched: Add sched_class->task_dead() method Git-Commit-ID: e6c390f2dfd04c165ce45b0032f73fba85b1f282 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.1 (terminus.zytor.com [127.0.0.1]); Wed, 27 Nov 2013 06:11:05 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: e6c390f2dfd04c165ce45b0032f73fba85b1f282 Gitweb: http://git.kernel.org/tip/e6c390f2dfd04c165ce45b0032f73fba85b1f282 Author: Dario Faggioli AuthorDate: Thu, 7 Nov 2013 14:43:35 +0100 Committer: Ingo Molnar CommitDate: Wed, 27 Nov 2013 14:08:50 +0100 sched: Add sched_class->task_dead() method Add a new function to the scheduling class interface. It is called at the end of a context switch, if the prev task is in TASK_DEAD state. It will be useful for the scheduling classes that want to be notified when one of their tasks dies, e.g. to perform some cleanup actions, such as SCHED_DEADLINE. Signed-off-by: Dario Faggioli Reviewed-by: Paul Turner Signed-off-by: Juri Lelli Cc: bruce.ashfield@windriver.com Cc: claudio@evidence.eu.com Cc: darren@dvhart.com Cc: dhaval.giani@gmail.com Cc: fchecconi@gmail.com Cc: fweisbec@gmail.com Cc: harald.gustafsson@ericsson.com Cc: hgu1972@gmail.com Cc: insop.song@gmail.com Cc: jkacur@redhat.com Cc: johan.eker@ericsson.com Cc: liming.wang@windriver.com Cc: luca.abeni@unitn.it Cc: michael@amarulasolutions.com Cc: nicola.manica@disi.unitn.it Cc: oleg@redhat.com Cc: paulmck@linux.vnet.ibm.com Cc: p.faure@akatech.ch Cc: rostedt@goodmis.org Cc: tommaso.cucinotta@sssup.it Cc: vincent.guittot@linaro.org Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1383831828-15501-2-git-send-email-juri.lelli@gmail.com Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 3 +++ kernel/sched/sched.h | 1 + 2 files changed, 4 insertions(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 19db8f3..25b3779 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2003,6 +2003,9 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) if (unlikely(prev_state == TASK_DEAD)) { task_numa_free(prev); + if (prev->sched_class->task_dead) + prev->sched_class->task_dead(prev); + /* * Remove function-return probe instances associated with this * task and put them back on the free list. diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 88c85b2..b3b4a49 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1023,6 +1023,7 @@ struct sched_class { void (*set_curr_task) (struct rq *rq); void (*task_tick) (struct rq *rq, struct task_struct *p, int queued); void (*task_fork) (struct task_struct *p); + void (*task_dead) (struct task_struct *p); void (*switched_from) (struct rq *this_rq, struct task_struct *task); void (*switched_to) (struct rq *this_rq, struct task_struct *task);