Re: [PATCH 1/2] sched: Move __task_rq_{, un}lock() to kernel/sched/sched.h

From: Kirill Tkhai
Date: Tue Feb 17 2015 - 06:20:25 EST

Ð ÐÑ, 17/02/2015 Ð 12:11 +0100, Peter Zijlstra ÐÐÑÐÑ:
> On Tue, Feb 17, 2015 at 01:46:51PM +0300, Kirill Tkhai wrote:
> >
> > Place it in sched.h, because dl_task_timer() needs it.
> > Also remove lockdep check, which is not fit to this
> > function.
> No, that lockdep check is valid for all current sites.

Sure, but dl_task_timer() do not lock pi_lock. I wanted to delete
"again:" loop in it to simplify second patch.

We can do not touch __task_rq_lock(), and add smp_rmb() in "again:"
loop in second patch instead of this.

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