Re: [patch 2/3] rtmutex: Propagate priority settings into PI lockchains

From: Thomas Gleixner
Date: Fri Jun 23 2006 - 12:23:51 EST


On Thu, 2006-06-22 at 19:06 -0700, Andrew Morton wrote:
> On Thu, 22 Jun 2006 09:08:39 -0000
> Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> > When the priority of a task, which is blocked on a lock, changes we must
> > propagate this change into the PI lock chain. Therefor the chain walk
> > code is changed to get rid of the references to current to avoid false
> > positives in the deadlock detector, as setscheduler might be called by a
> > task which holds the lock on which the task whose priority is changed is
> > blocked.
> > Also add some comments about the get/put_task_struct usage to avoid
> > confusion.
> >
> > Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
> >
> > include/linux/sched.h | 2 ++
> > kernel/rtmutex.c | 41 ++++++++++++++++++++++++++++++++++++-----
>
> That file's full of lockdep droppings from a different patchset. Please
> check the end result.

Will do in a minute

tglx


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