[patch] voluntary-preempt-2.6.9-rc1-bk4-Q1

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxx> wrote:

> * Scott Wood <scott@xxxxxxxxxxx> wrote:
> 
> > If I'm missing something, please let me know, but I don't see a good
> > way to implement it without blocking for the IRQ thread's completion
> > (such as with the per-IRQ waitqueues in M5).
> 
> agreed, this is a hole in generic_synchronize_irq(). I've added
> handler-completion waitqueues to my current tree, it will show up in
> -Q1.

i've uploaded -Q1:

  http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-Q1

as with -Q0, the following patch has to be applied to 2.6.8.1 first:

  http://redhat.com/~mingo/voluntary-preempt/diff-bk-040828-2.6.8.1.bz2

those who still have DRI problems under -Q1 - please unapply the
drm_os_linux.h change, does the fix the lockups?

Changes since -Q0:

- the synchronize_irq() fix - this might help SMP problems.

- adds unlock_kernel() to the NTFS and ext3 mount path, to fix the
  latencies reported by Lee Revell.

	Ingo
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