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authorArnd Bergmann <arnd@arndb.de>2005-12-06 03:52:25 (GMT)
committerPaul Mackerras <paulus@samba.org>2006-01-09 03:52:55 (GMT)
commit5110459f181ef1f11200bb3dec61953f08cc49e7 (patch)
tree73356ce50b3fb5055b4a6f39f237f046615f797d /drivers
parent3b3d22cb84a0bb12f6bbb2b1158972894bec3f21 (diff)
downloadlinux-5110459f181ef1f11200bb3dec61953f08cc49e7.tar.xz
[PATCH] spufs: Improved SPU preemptability.
This patch makes it easier to preempt an SPU context by having the scheduler hold ctx->state_sema for much shorter periods of time. As part of this restructuring, the control logic for the "run" operation is moved from arch/ppc64/kernel/spu_base.c to fs/spufs/file.c. Of course the base retains "bottom half" handlers for class{0,1} irqs. The new run loop will re-acquire an SPU if preempted. From: Mark Nutter <mnutter@us.ibm.com> Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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