From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751942AbdFHJcH (ORCPT ); Thu, 8 Jun 2017 05:32:07 -0400 Received: from terminus.zytor.com ([65.50.211.136]:56581 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750752AbdFHJcG (ORCPT ); Thu, 8 Jun 2017 05:32:06 -0400 Date: Thu, 8 Jun 2017 02:26:22 -0700 From: tip-bot for Luca Abeni Message-ID: Cc: joelaf@google.com, tommaso.cucinotta@sssup.it, claudio@evidence.eu.com, rostedt@goodmis.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, efault@gmx.de, juri.lelli@arm.com, luca.abeni@santannapisa.it, hpa@zytor.com, mingo@kernel.org, bristot@redhat.com, mathieu.poirier@linaro.org, peterz@infradead.org Reply-To: joelaf@google.com, tommaso.cucinotta@sssup.it, rostedt@goodmis.org, claudio@evidence.eu.com, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, efault@gmx.de, tglx@linutronix.de, juri.lelli@arm.com, luca.abeni@santannapisa.it, hpa@zytor.com, mingo@kernel.org, bristot@redhat.com, peterz@infradead.org, mathieu.poirier@linaro.org In-Reply-To: <1495138417-6203-7-git-send-email-luca.abeni@santannapisa.it> References: <1495138417-6203-7-git-send-email-luca.abeni@santannapisa.it> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/deadline: Make GRUB a task's flag Git-Commit-ID: 2d4283e9d583a3ee8cfb1cbb9c1270614df4c29d 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 2d4283e9d583a3ee8cfb1cbb9c1270614df4c29d Gitweb: http://git.kernel.org/tip/2d4283e9d583a3ee8cfb1cbb9c1270614df4c29d Author: Luca Abeni AuthorDate: Thu, 18 May 2017 22:13:33 +0200 Committer: Ingo Molnar CommitDate: Thu, 8 Jun 2017 10:31:52 +0200 sched/deadline: Make GRUB a task's flag This patch introduces the SCHED_FLAG_RECLAIM flag to specify that a DL task is allowed to reclaim unused CPU time (using the GRUB algorithm). Tested-by: Daniel Bristot de Oliveira Signed-off-by: Luca Abeni Signed-off-by: Peter Zijlstra (Intel) Cc: Claudio Scordino Cc: Joel Fernandes Cc: Juri Lelli Cc: Linus Torvalds Cc: Mathieu Poirier Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Cc: Tommaso Cucinotta Link: http://lkml.kernel.org/r/1495138417-6203-7-git-send-email-luca.abeni@santannapisa.it Signed-off-by: Ingo Molnar --- include/uapi/linux/sched.h | 1 + kernel/sched/core.c | 3 ++- kernel/sched/deadline.c | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/sched.h b/include/uapi/linux/sched.h index 5f0fe01..e2a6c7b 100644 --- a/include/uapi/linux/sched.h +++ b/include/uapi/linux/sched.h @@ -47,5 +47,6 @@ * For the sched_{set,get}attr() calls */ #define SCHED_FLAG_RESET_ON_FORK 0x01 +#define SCHED_FLAG_RECLAIM 0x02 #endif /* _UAPI_LINUX_SCHED_H */ diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7abd064..8d1a5a6 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4195,7 +4195,8 @@ recheck: return -EINVAL; } - if (attr->sched_flags & ~(SCHED_FLAG_RESET_ON_FORK)) + if (attr->sched_flags & + ~(SCHED_FLAG_RESET_ON_FORK | SCHED_FLAG_RECLAIM)) return -EINVAL; /* diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 6a0614b..61ea303 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -985,7 +985,8 @@ static void update_curr_dl(struct rq *rq) sched_rt_avg_update(rq, delta_exec); - delta_exec = grub_reclaim(delta_exec, rq); + if (unlikely(dl_se->flags & SCHED_FLAG_RECLAIM)) + delta_exec = grub_reclaim(delta_exec, rq); dl_se->runtime -= delta_exec; throttle: