On 21/10/14 14:39, Wanpeng Li wrote: > Hi Juri, > > 于 10/21/14, 9:29 PM, Juri Lelli 写道: >> Hi, >> >> On 21/10/14 13:19, Wanpeng Li wrote: >>> Cc Juri, >>> >>> 于 10/14/14, 10:22 AM, Wanpeng Li 写道: >>>> Use nr_cpus_allowed to bail from select_task_rq() when only one cpu >>>> can be used, and saves some cycles for pinned tasks. >>>> >>>> Signed-off-by: Wanpeng Li <[email protected]> >>>> --- >>>> kernel/sched/deadline.c | 3 +++ >>>> 1 file changed, 3 insertions(+) >>>> >>>> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c >>>> index f46b7f1..5874bf8 100644 >>>> --- a/kernel/sched/deadline.c >>>> +++ b/kernel/sched/deadline.c >>>> @@ -914,6 +914,9 @@ select_task_rq_dl(struct task_struct *p, int cpu, int >>>> sd_flag, int flags) >>>> struct task_struct *curr; >>>> struct rq *rq; >>>> >>>> + if (p->nr_cpus_allowed == 1) >>>> + goto out; >>>> + >>>> if (sd_flag != SD_BALANCE_WAKE) >>>> goto out; >>>> >> Apart from the encoding of the resend, it looks good, thanks! > > What's your meaning of resend? Do you mean this one?
Nope. I just meant that I received your "Cc Juri" encoded as Chinese Simplified. But, I guess the original lkml patch looks good. Sorry for the confusion :). Best, - Juri > > https://lkml.org/lkml/2014/10/10/425 > > I'm afraid they are different patches. > > Regards, > Wanpeng Li > >> >> Best, >> >> - Juri >> > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
