linux-kernel - [patch 2/2] Re: [PATCH] scheduler: introduce SCHED_RESET_ON

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Date:	Wed, 17 Jun 2009 10:48:02 +0200
From:	Mike Galbraith <efault@....de>
To:	Lennart Poettering <mzxreary@...inter.de>
Cc:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: [patch 2/2] Re: [PATCH] scheduler: introduce SCHED_RESET_ON_FORK
 scheduling policy flag, fourth try

commit 50f3ff67c7fbcd37f0a135113ecd56f724d9b081
Author: Mike Galbraith <efault@....de>
Date:   Wed Jun 17 10:30:19 2009 +0200

    sched: Add SCHED_RESET_ON_FORK functionality for nice < 0 tasks.
    
    Signed-off-by: Mike Galbraith <efault@....de>
    Cc: Ingo Molnar <mingo@...e.hu>
    Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
    Cc: Lennart Poettering <mzxreary@...inter.de>
    LKML-Reference: <new-submission>
---
 kernel/sched.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 3c27e44..fe31c2d 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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