[POWERPC] spufs: runqueue simplification

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This is the biggest patch in this series, and it reworks the guts of
the spu scheduler runqueue mechanism:

 - instead of embedding a waitqueue in the runqueue there is now a
   simple doubly-linked list, the actual wakeups happen by reusing
   the stop_wq in the spu context (maybe we should rename it one day)
 - spu_free and spu_prio_wakeup are merged into a single spu_reschedule
   function
 - various functionality is split out into small helpers, and kerneldoc
   comments are added in various places to document what's going on.
 - spu_activate is rewritten into a tight loop by removing test for
   various impossible conditions and using the infrastructure in this
   patch.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

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This commit is contained in:

Christoph Hellwig 2007-02-13 21:54:23 +01:00 • committed by Arnd Bergmann

parent 8389998ae9

commit 079cdb6161

2 changed files with 93 additions and 67 deletions

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

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1

arch/powerpc/platforms/cell/spufs/spufs.h

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