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SubjectRe: [PATCH 2.6.20-rc4 1/4] futex priority based wakeup
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On Wed, 2007-01-10 at 17:29 +0100, Pierre Peiffer wrote:

> >
> > Is this really necessary? The rtmutex will priority sort the waiters
> > when you enable priority inheritance. Inside the wake_futex_pi() it
> > actually just pulls the new owner off another plist inside the the
> > rtmutex structure.
>
> Yes. ... necessary for non-PI-futex (ie "normal" futex)...
>
> As the hash_bucket_list is used and common for both futex and PI-futex, yes, in
> case of PI_futex, the task is queued two times in two plist.

You could make them distinct .. Also Did you consider merging the PI
path and the non-PI code path? then you could modify the rtmutex to
toggle PI depending .

Daniel

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