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SubjectRe: RT Mutex patch and tester [PREEMPT_RT]

* Esben Nielsen <simlo@phys.au.dk> wrote:

> Hi,
> I have updated it:
>
> 1) Now ALL_TASKS_PI is 0 again. Only RT tasks will be added to
> task->pi_waiters. Therefore we avoid taking the owner->pi_lock when the
> waiter isn't RT.
> 2) Merged into 2.6.15-rt6.
> 3) Updated the tester to test the hand over of BKL, which was mentioned
> as a potential issue by Bill Huey. Also added/adjusted the tests for the
> ALL_TASKS_PI==0 setup.
> (I really like unittesting: If someone points out an issue or finds a bug,
> make a test first demonstrating the problem. Then fixing the code is a lot
> easier - especially in this case where I run rt.c in userspace where I can
> easily use gdb.)

looks really nice to me. In particular i like the cleanup effect:

5 files changed, 490 insertions(+), 744 deletions(-)

right now Thomas is merging hrtimer-latest to -rt, which temporarily
blocks merging of intrusive patches - but i'll try to merge your patch
after Thomas is done. (hopefully later today)

Ingo
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