Re: [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c

Tejun Heo
2010-10-22T08:17:49Z

Hello,

On 10/22/2010 03:44 AM, Jason Baron wrote:
> (adding Tejun to the 'cc list)
>
> I finally found that we actually continue to run after the above
> apparent 'hang'. That is, we continue to make progress updating the jump
> labels. And doing a dump of all the system tasks at the time of the hang
> showed the processes in various places besides the stop machine threads.
> Thus, I thought that perhaps, for some reason the stop machine threads
> weren't being scheduled.
>
> Thus, I tried commenting out the special scheduling that is set up for
> stop machine threads, and that fixed the hang. I haven't yet looked into
> what might be going wrong with that scheduling...but maybe somebody else
> knows...

I'm afraid I don't have much idea about the new scheduling class. I
liked the idea but Peter did all the hard working on it. Peter?

Thanks.

--
tejun