diff options
author | Christoph Hellwig <hch@lst.de> | 2007-06-29 00:57:51 (GMT) |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2007-07-03 05:24:44 (GMT) |
commit | 379018022071489a7dffee74db2a267465dab561 (patch) | |
tree | 7f8f0ce614c827e637a71a414308f1dee06fc452 /arch/powerpc/platforms/cell/spufs/spufs.h | |
parent | be7031773eded128675de6da778234a935c8d8ea (diff) | |
download | linux-fsl-qoriq-379018022071489a7dffee74db2a267465dab561.tar.xz |
[POWERPC] spusched: Switch from workqueues to kthread + timer tick
Get rid of the scheduler workqueues that complicated things a lot to
a dedicated spu scheduler thread that gets woken by a traditional
scheduler tick. By default this scheduler tick runs a HZ * 10, aka
one spu scheduler tick for every 10 cpu ticks.
Currently the tick is not disabled when we have less context than
available spus, but I will implement this later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/spufs.h')
-rw-r--r-- | arch/powerpc/platforms/cell/spufs/spufs.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h index 47617e8..8068171 100644 --- a/arch/powerpc/platforms/cell/spufs/spufs.h +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -31,6 +31,8 @@ #include <asm/spu_csa.h> #include <asm/spu_info.h> +#define SPU_DEF_TIMESLICE 100 + /* The magic number for our file system */ enum { SPUFS_MAGIC = 0x23c9b64e, @@ -39,11 +41,6 @@ enum { struct spu_context_ops; struct spu_gang; -/* ctx->sched_flags */ -enum { - SPU_SCHED_EXITING = 0, -}; - struct spu_context { struct spu *spu; /* pointer to a physical SPU */ struct spu_state csa; /* SPU context save area. */ @@ -83,7 +80,7 @@ struct spu_context { /* scheduler fields */ struct list_head rq; - struct delayed_work sched_work; + unsigned int time_slice; unsigned long sched_flags; unsigned long rt_priority; int policy; @@ -200,9 +197,6 @@ void spu_acquire_saved(struct spu_context *ctx); int spu_activate(struct spu_context *ctx, unsigned long flags); void spu_deactivate(struct spu_context *ctx); void spu_yield(struct spu_context *ctx); -void spu_start_tick(struct spu_context *ctx); -void spu_stop_tick(struct spu_context *ctx); -void spu_sched_tick(struct work_struct *work); int __init spu_sched_init(void); void __exit spu_sched_exit(void); |