linux-kernel - [tip:sched/core] sched: Add SCHED_RESET_ON

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Date:	Wed, 17 Jun 2009 16:36:44 GMT
From:	tip-bot for Mike Galbraith <efault@....de>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	peterz@...radead.org, efault@....de, mzxreary@...inter.de,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:sched/core] sched: Add SCHED_RESET_ON_FORK functionality for nice < 0 tasks

Commit-ID:  6c697bdf08a09ce461e305a22362973036e95db3
Gitweb:     http://git.kernel.org/tip/6c697bdf08a09ce461e305a22362973036e95db3
Author:     Mike Galbraith <efault@....de>
AuthorDate: Wed, 17 Jun 2009 10:48:02 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 17 Jun 2009 18:34:18 +0200

sched: Add SCHED_RESET_ON_FORK functionality for nice < 0 tasks

Signed-off-by: Mike Galbraith <efault@....de>
Acked-by: Lennart Poettering <mzxreary@...inter.de>
Cc: Peter Zijlstra <peterz@...radead.org>
LKML-Reference: <1245228482.27326.1.camel@...ge.simson.net>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/sched.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 50e4e3d..34f9424 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2627,6 +2627,11 @@ void sched_fork(struct task_struct *p, int clone_flags)
 		if (p->normal_prio < DEFAULT_PRIO)
 			p->prio = DEFAULT_PRIO;
 
+		if (PRIO_TO_NICE(p->static_prio) < 0) {
+			p->static_prio = NICE_TO_PRIO(0);
+			set_load_weight(p);
+		}
+
 		/*
 		 * We don't need the reset flag anymore after the fork. It has
 		 * fulfilled its duty:
--
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