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
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
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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,
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,
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
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
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
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-cmd
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
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-cmd
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, 1LL,
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 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,
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 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 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.
--
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