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sched: handle vruntime 64-bit overflow
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Mon, 15 Oct 2007 15:00:05 +0000 (17:00 +0200)
committerIngo Molnar <mingo@elte.hu>
Mon, 15 Oct 2007 15:00:05 +0000 (17:00 +0200)
commit9014623c0e3545be58a7f19f55793f6517bdc274
tree064267aecedeacb8154282c6475d67f4e34f41e3tree
parent94dfb5e75ef59068a8cf68fa6e18f25ebdcd20b9commit | diff
sched: handle vruntime 64-bit overflow

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>
kernel/sched_fair.c diff | blob | blame | history
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