locking/rtmutex: Squash !RT tasks to DEFAULT_PRIO

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Ensure all !RT tasks have the same prio such that they end up in FIFO
order and aren't split up according to nice level.

The reason why nice levels were taken into account so far is historical. In
the early days of the rtmutex code it was done to give the PI boosting and
deboosting a larger coverage.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211303.938676930@linutronix.de

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Peter Zijlstra 2021-08-15 23:28:30 +02:00 • committed by Ingo Molnar

parent 8282947f67

commit 715f7f9ece

1 changed files with 20 additions and 5 deletions

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kernel/locking/rtmutex.c

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