On 2014/7/8 20:52, Peter Zijlstra wrote:
On Tue, Jul 08, 2014 at 07:50:22PM +0800, xiaofeng.yan wrote:
I have tested this solution, It can work very well with deadline schedule
class.
Great, please send it as a proper patch and I might just press 'A' ;-)
Ok, I will send it later.
--
To unsu
On Tue, Jul 08, 2014 at 07:50:22PM +0800, xiaofeng.yan wrote:
> I have tested this solution, It can work very well with deadline schedule
> class.
Great, please send it as a proper patch and I might just press 'A' ;-)
pgprzatF0PKAM.pgp
Description: PGP signature
On 2014/7/8 19:23, xiaofeng.yan wrote:
On 2014/7/8 17:33, Peter Zijlstra wrote:
On Tue, Jul 08, 2014 at 08:53:27AM +, xiaofeng.yan wrote:
static void start_hrtick_dl(struct rq *rq, struct task_struct *p)
{
-s64 delta = p->dl.dl_runtime - p->dl.runtime;
-
-if (delta > 1)
-
On 2014/7/8 17:33, Peter Zijlstra wrote:
On Tue, Jul 08, 2014 at 08:53:27AM +, xiaofeng.yan wrote:
static void start_hrtick_dl(struct rq *rq, struct task_struct *p)
{
- s64 delta = p->dl.dl_runtime - p->dl.runtime;
-
- if (delta > 1)
- hrtick_start(rq, p->dl
On Die, 2014-07-08 at 11:33 +0200, Peter Zijlstra wrote:
[...]
> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> index fc4f98b1258f..e1e24eea8061 100644
> --- a/kernel/sched/deadline.c
> +++ b/kernel/sched/deadline.c
> @@ -999,8 +999,7 @@ static void start_hrtick_dl(struct rq *rq,
On Tue, Jul 08, 2014 at 08:53:27AM +, xiaofeng.yan wrote:
> static void start_hrtick_dl(struct rq *rq, struct task_struct *p)
> {
> - s64 delta = p->dl.dl_runtime - p->dl.runtime;
> -
> - if (delta > 1)
> - hrtick_start(rq, p->dl.runtime);
> + delta = max_t(s64, 10
It could be wrong for the precision of runtime and deadline
when the precision is within microsecond level. For example:
Task runtime deadline period
P1 200us 500us 500us
This case need enbale HRTICK feature by the next command
PC#echo "HRTICK" > /sys/kernel/debug/sched_features
PC#trace-cm
On 2014/7/8 16:53, xiaofeng.yan wrote:
Sorry, I send a old patch and send a new one later.
Thanks
Yan
It could be wrong for the precision of runtime and deadline
when the precision is within microsecond level. For example:
Task runtime deadline period
P1 200us 500us 500us
This case nee
It could be wrong for the precision of runtime and deadline
when the precision is within microsecond level. For example:
Task runtime deadline period
P1 200us 500us 500us
This case need enbale HRTICK feature by the next command
PC#echo "HRTICK" > /sys/kernel/debug/sched_features
PC#trace-cm
9 matches
Mail list logo