From: Thomas Gleixner <tglx@linutronix.de>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu
Subject: Re: [patch 2/3] rtmutex: Propagate priority settings into PI lock chains
Date: Fri, 23 Jun 2006 18:26:57 +0200 [thread overview]
Message-ID: <1151080017.25491.240.camel@localhost.localdomain> (raw)
In-Reply-To: <20060622190657.08944024.akpm@osdl.org>
On Thu, 2006-06-22 at 19:06 -0700, Andrew Morton wrote:
> On Thu, 22 Jun 2006 09:08:39 -0000
> Thomas Gleixner <tglx@linutronix.de> 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@linutronix.de>
> > Signed-off-by: Ingo Molnar <mingo@elte.hu>
> >
> > 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
next prev parent reply other threads:[~2006-06-23 16:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-22 9:08 [patch 0/3] rtmutex: Propagate priority setting into lock chains Thomas Gleixner
2006-06-22 9:08 ` [patch 1/3] Drop tasklist lock in do_sched_setscheduler Thomas Gleixner
2006-06-23 1:48 ` Andrew Morton
2006-06-23 6:01 ` Thomas Gleixner
2006-06-24 8:07 ` Andrew Morton
2006-06-24 8:25 ` Thomas Gleixner
2006-06-22 9:08 ` [patch 2/3] rtmutex: Propagate priority settings into PI lock chains Thomas Gleixner
2006-06-22 14:20 ` Steven Rostedt
2006-06-22 18:02 ` Esben Nielsen
2006-06-23 6:27 ` Steven Rostedt
2006-06-23 2:08 ` Andrew Morton
2006-06-23 9:28 ` [PATCH -mm] bug if setscheduler is called from interrupt context Steven Rostedt
2006-06-23 2:06 ` [patch 2/3] rtmutex: Propagate priority settings into PI lock chains Andrew Morton
2006-06-23 16:26 ` Thomas Gleixner [this message]
2006-06-22 9:08 ` [patch 3/3] rtmutex: Modify rtmutex-tester to test the setscheduler propagation Thomas Gleixner
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