powerpc/spufs: Fix possible scheduling of a context to multiple SPEs

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We currently have a race when scheduling a context to a SPE -
after we have found a runnable context in spusched_tick, the same
context may have been scheduled by spu_activate().

This may result in a panic if we try to unschedule a context that has
been freed in the meantime.

This change exits spu_schedule() if the context has already been
scheduled, so we don't end up scheduling it twice.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

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Andre Detsch 2008-09-04 21:16:27 +00:00 • committed by Jeremy Kerr

parent b65fe0356b

commit b2e601d14d

1 changed files with 2 additions and 1 deletions

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arch/powerpc/platforms/cell/spufs/sched.c

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