Hi, On 21/10/14 13:19, Wanpeng Li wrote: > Cc Juri, > > δΊ 10/14/14, 10:22 AM, Wanpeng Li ει: >> 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! 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/
