revert "sched: fix fair sleepers"

revert "sched: fix fair sleepers" (e22ecef1d2658ba54ed7d3fdb5d60829fb434c23), because it is causing audio skipping, see: http://bugzilla.kernel.org/show_bug.cgi?id=10428 the patch is correct and the real cause of the skipping is not understood (tracing makes it go away), but time has run out so we'll revert it and re-try in 2.6.26.

Ingo Molnar committed 18 years ago

Commit e2df9e01 parent 120dd641 file · +2 −4Browse files

Showing the changes to kernel (1 of 1 file). Show all

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kernel/sched_fair.c+2−4

@@ -510,10 +510,8 @@ place_entity(struct cfs_rq cfs_rq, struct sched_entity se, int initial) · 509 unmodified lines
510	510
511	511	if (!initial) {
512	512	/* sleeps upto a single latency don't count. */
513		− if (sched_feat(NEW_FAIR_SLEEPERS)) {
514		− vruntime -= calc_delta_fair(sysctl_sched_latency,
515		− &cfs_rq->load);
516		− }
	513	+ if (sched_feat(NEW_FAIR_SLEEPERS))
	514	+ vruntime -= sysctl_sched_latency;
517	515
518	516	/* ensure we never gain time by being placed backwards. */
519	517	vruntime = max_vruntime(se->vruntime, vruntime);