sched: handle vruntime 64-bit overflow

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Handle vruntime overflow by centering the key space around min_vruntime.

( otherwise we could overflow 64-bit vruntime in a few days with SCHED_IDLE
 tasks - or in a few years with nice +19. )

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

...

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Peter Zijlstra 2007-10-15 17:00:05 +02:00 • committed by Ingo Molnar

parent 94dfb5e75e

commit 9014623c0e

1 changed files with 11 additions and 4 deletions

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kernel/sched_fair.c

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