From 52d3da1ad4f442cec877fbeb83902707b56da0cf Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 9 Nov 2007 22:39:39 +0100 Subject: [PATCH] sched: turn off PREEMPT_RESTRICT PREEMPT_RESTRICT was a method aimed at reducing the amount of wakeup related preemption. It has a disadvantage though, it can prevent legitimate wakeups if a task is 'unlucky' to be hit too early by a tick that clears peer_preempt. Now that the wakeup preemption has been cleaned up we dont seem to have excessive preemptions anymore, so this feature can be turned off. (and removed in the next patch) Signed-off-by: Ingo Molnar --- kernel/sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched.c b/kernel/sched.c index 387258cdd0b9..4b23dfb4c80f 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -469,7 +469,7 @@ const_debug unsigned int sysctl_sched_features = SCHED_FEAT_TREE_AVG * 0 | SCHED_FEAT_APPROX_AVG * 0 | SCHED_FEAT_WAKEUP_PREEMPT * 1 | - SCHED_FEAT_PREEMPT_RESTRICT * 1; + SCHED_FEAT_PREEMPT_RESTRICT * 0; #define sched_feat(x) (sysctl_sched_features & SCHED_FEAT_##x) -- 2.30.2