Re: [PATCH V3] rtmutex: ensure only the top waiter or higherpriority task can take the lock and remove unrelated boosting

From: Steven Rostedt
Date: Wed Jan 12 2011 - 12:05:41 EST


On Wed, 2011-01-12 at 12:04 -0500, Steven Rostedt wrote:
> On Wed, 2011-01-12 at 12:03 -0500, Steven Rostedt wrote:
> > On Thu, 2010-12-23 at 16:49 +0800, Lai Jiangshan wrote:
> > > In current rtmutex, the pending owner may be boosted by the tasks
> > > in the rtmutex's waitlist when the pending owner is deboosted
> > > or a task in the waitlist is boosted. This boosting is unrelated,
> > > because the pending owner does not really take the rtmutex.
> > > It is not reasonable.
> >
> > Hi Lai,
> >
> > Your patch looks like it is proving itself in -rt (after I fixed a bunch
> > of -rt stuff to get your stuff working ;).
> >
> > Could you repost your patch with the following removed:
>
> Oh, and you can add:
>
> Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
>

Actually this would be more appropriate:

Reviewed-by: Steven Rostedt <rostedt@xxxxxxxxxxx>

-- Steve


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