Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=db292ca302e83534f5f0f7139e13d7e6976e51f9
Commit: db292ca302e83534f5f0f7139e13d7e6976e51f9
Parent: 77034937dc4575ca0a76bf209838ecd39e804089
Author: Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Tue Dec 4 17:04:39 2007 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Tue Dec 4 17:04:39 2007 +0100
sched: default to more agressive yield for SCHED_BATCH tasks
do more agressive yield for SCHED_BATCH tuned tasks: they are all
about throughput anyway. This allows a gentler migration path for
any apps that relied on stronger yield.
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
kernel/sched_fair.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 37bb265..c33f0ce 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -799,8 +799,9 @@ static void dequeue_task_fair(struct rq *rq, struct
task_struct *p, int sleep)
*/
static void yield_task_fair(struct rq *rq)
{
- struct cfs_rq *cfs_rq = task_cfs_rq(rq->curr);
- struct sched_entity *rightmost, *se = &rq->curr->se;
+ struct task_struct *curr = rq->curr;
+ struct cfs_rq *cfs_rq = task_cfs_rq(curr);
+ struct sched_entity *rightmost, *se = &curr->se;
/*
* Are we the only task in the tree?
@@ -808,7 +809,7 @@ static void yield_task_fair(struct rq *rq)
if (unlikely(cfs_rq->nr_running == 1))
return;
- if (likely(!sysctl_sched_compat_yield)) {
+ if (likely(!sysctl_sched_compat_yield) && curr->policy != SCHED_BATCH) {
__update_rq_clock(rq);
/*
* Update run-time statistics of the 'current'.
-
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