diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2005-12-05 22:52:25 -0500 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-01-09 14:52:55 +1100 |
| commit | 5110459f181ef1f11200bb3dec61953f08cc49e7 (patch) | |
| tree | 73356ce50b3fb5055b4a6f39f237f046615f797d /include/asm-powerpc/spu.h | |
| parent | 3b3d22cb84a0bb12f6bbb2b1158972894bec3f21 (diff) | |
| download | lwn-5110459f181ef1f11200bb3dec61953f08cc49e7.tar.gz lwn-5110459f181ef1f11200bb3dec61953f08cc49e7.zip | |
[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>
Diffstat (limited to 'include/asm-powerpc/spu.h')
| -rw-r--r-- | include/asm-powerpc/spu.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h index 092ec97be326..dd91ed8563d2 100644 --- a/include/asm-powerpc/spu.h +++ b/include/asm-powerpc/spu.h @@ -135,9 +135,9 @@ struct spu { spinlock_t register_lock; u32 stop_code; - wait_queue_head_t stop_wq; void (* wbox_callback)(struct spu *spu); void (* ibox_callback)(struct spu *spu); + void (* stop_callback)(struct spu *spu); char irq_c0[8]; char irq_c1[8]; @@ -146,7 +146,8 @@ struct spu { struct spu *spu_alloc(void); void spu_free(struct spu *spu); -int spu_run(struct spu *spu); +int spu_irq_class_0_bottom(struct spu *spu); +int spu_irq_class_1_bottom(struct spu *spu); extern struct spufs_calls { asmlinkage long (*create_thread)(const char __user *name, |