Re: [RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Lei Wen
Hi Mike, On Mon, Dec 30, 2013 at 12:08 PM, Mike Galbraith wrote: > On Mon, 2013-12-30 at 11:14 +0800, Lei Wen wrote: >> Since we would update rq clock at task enqueue/dequeue, or schedule >> tick. If we don't update the rq clock when our previous task get >> preempted, our new started task would

Re: [RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Mike Galbraith
On Mon, 2013-12-30 at 11:14 +0800, Lei Wen wrote: > Since we would update rq clock at task enqueue/dequeue, or schedule > tick. If we don't update the rq clock when our previous task get > preempted, our new started task would get a relative stale rq clock > which is updated during the previous

[RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Lei Wen
Since we would update rq clock at task enqueue/dequeue, or schedule tick. If we don't update the rq clock when our previous task get preempted, our new started task would get a relative stale rq clock which is updated during the previous task enqueue, or the last schedule clock update. If we want

[RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Lei Wen
Since we would update rq clock at task enqueue/dequeue, or schedule tick. If we don't update the rq clock when our previous task get preempted, our new started task would get a relative stale rq clock which is updated during the previous task enqueue, or the last schedule clock update. If we want

Re: [RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Mike Galbraith
On Mon, 2013-12-30 at 11:14 +0800, Lei Wen wrote: Since we would update rq clock at task enqueue/dequeue, or schedule tick. If we don't update the rq clock when our previous task get preempted, our new started task would get a relative stale rq clock which is updated during the previous task

Re: [RFC] sched: update rq clock when only get preempt

2013-12-29 Thread Lei Wen
Hi Mike, On Mon, Dec 30, 2013 at 12:08 PM, Mike Galbraith bitbuc...@online.de wrote: On Mon, 2013-12-30 at 11:14 +0800, Lei Wen wrote: Since we would update rq clock at task enqueue/dequeue, or schedule tick. If we don't update the rq clock when our previous task get preempted, our new