On Fri, 2010-10-29 at 08:38 +0200, Raistlin wrote:
> Add tracepoints for the most notable events related to -deadline
> tasks scheduling (new task arrival, context switch, runtime accounting,
> bandwidth enforcement timer, etc.).
>
> Signed-off-by: Dario Faggioli <[email protected]>
> Signed-off-by: Harald Gustafsson <[email protected]>
> ---
> include/trace/events/sched.h | 203 +++++++++++++++++++++++++++++++++++++++++-
> kernel/sched.c | 2 +
> kernel/sched_dl.c | 21 +++++
> 3 files changed, 225 insertions(+), 1 deletions(-)
>
> diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
> index f633478..03baa17 100644
> --- a/include/trace/events/sched.h
> +++ b/include/trace/events/sched.h
> @@ -304,7 +304,6 @@ DECLARE_EVENT_CLASS(sched_stat_template,
> (unsigned long long)__entry->delay)
> );
>
> -
> /*
> * Tracepoint for accounting wait time (time the task is runnable
> * but not actually running due to scheduler contention).
> @@ -363,6 +362,208 @@ TRACE_EVENT(sched_stat_runtime,
> );
>
> /*
> + * Tracepoint for task switches involving -deadline tasks:
> + */
> +TRACE_EVENT(sched_switch_dl,
We've already got sched_switch(), better extend that. Same for the next
patch, we already have a migration tracepoint, extend that.
And I recently rejected a fifo push/pull tracepoint patch from Steve
because the migration tracepoint was able to provide the same
information.
On Thu, 2010-11-11 at 20:54 +0100, Peter Zijlstra wrote:
> On Fri, 2010-10-29 at 08:38 +0200, Raistlin wrote:
> > Add tracepoints for the most notable events related to -deadline
> > tasks scheduling (new task arrival, context switch, runtime accounting,
> > bandwidth enforcement timer, etc.).
> >
> We've already got sched_switch(), better extend that. Same for the next
> patch, we already have a migration tracepoint, extend that.
>
> And I recently rejected a fifo push/pull tracepoint patch from Steve
> because the migration tracepoint was able to provide the same
> information.
>
Perfectly fine. I'll see how do that without spamming too much the trace
with data that are meaningless for non-deadline tasks.
Thanks,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa (Italy)
http://blog.linux.it/raistlin / [email protected] /
[email protected]