diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/spufs.h')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/spufs.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h index 48961ac584a..c715ed0c401 100644 --- a/arch/powerpc/platforms/cell/spufs/spufs.h +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -124,6 +124,34 @@ void spu_yield(struct spu_context *ctx); int __init spu_sched_init(void); void __exit spu_sched_exit(void); +/* + * spufs_wait + * Same as wait_event_interruptible(), except that here + * we need to call spu_release(ctx) before sleeping, and + * then spu_acquire(ctx) when awoken. + */ + +#define spufs_wait(wq, condition) \ +({ \ + int __ret = 0; \ + DEFINE_WAIT(__wait); \ + for (;;) { \ + prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \ + if (condition) \ + break; \ + if (!signal_pending(current)) { \ + spu_release(ctx); \ + schedule(); \ + spu_acquire(ctx); \ + continue; \ + } \ + __ret = -ERESTARTSYS; \ + break; \ + } \ + finish_wait(&(wq), &__wait); \ + __ret; \ +}) + size_t spu_wbox_write(struct spu_context *ctx, u32 data); size_t spu_ibox_read(struct spu_context *ctx, u32 *data); |