diff options
| author | Mark Nutter <mnutter@us.ibm.com> | 2006-10-24 20:31:16 +0400 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-10-25 08:20:21 +0400 |
| commit | 5737edd1ddbde5ab7f63bb3cb36015edbdb7c295 (patch) | |
| tree | 10162eb7c27fa0a3d1614c2d46fdcf2c87410d3a /arch/powerpc/platforms/cell/spufs/hw_ops.c | |
| parent | cc21a66d7f727ab97b27af9cf763bc0b51510ffa (diff) | |
| download | linux-5737edd1ddbde5ab7f63bb3cb36015edbdb7c295.tar.xz | |
[POWERPC] spufs: add support for nonschedulable contexts
This adds two new flags to spu_create:
SPU_CREATE_NONSCHED: create a context that is never moved
away from an SPE once it has started running. This flag
can only be used by tasks with the CAP_SYS_NICE capability.
SPU_CREATE_ISOLATED: create a nonschedulable context that
enters isolation mode upon first run. This requires the
SPU_CREATE_NONSCHED flag.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/hw_ops.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/hw_ops.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/hw_ops.c b/arch/powerpc/platforms/cell/spufs/hw_ops.c index efc452e71ab0..2ad534a04be8 100644 --- a/arch/powerpc/platforms/cell/spufs/hw_ops.c +++ b/arch/powerpc/platforms/cell/spufs/hw_ops.c @@ -219,8 +219,11 @@ static char *spu_hw_get_ls(struct spu_context *ctx) static void spu_hw_runcntl_write(struct spu_context *ctx, u32 val) { - eieio(); + spin_lock_irq(&ctx->spu->register_lock); + if (val & SPU_RUNCNTL_ISOLATE) + out_be64(&ctx->spu->priv2->spu_privcntl_RW, 4LL); out_be32(&ctx->spu->problem->spu_runcntl_RW, val); + spin_unlock_irq(&ctx->spu->register_lock); } static void spu_hw_runcntl_stop(struct spu_context *ctx) |