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authorPaul Mackerras <paulus@samba.org>2008-02-21 21:49:13 +1100
committerPaul Mackerras <paulus@samba.org>2008-02-21 21:49:13 +1100
commita8b87f609d1332216e683b473d33342c86f21ac3 (patch)
tree128f86486e6ec21307c9047949639062da660ad9 /arch/powerpc
parent9c0338522896c54b79ad7918638175bf58d7c551 (diff)
parent61b36fc1f7d511132b1dd1422c29c7a8f26d77db (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c12
-rw-r--r--arch/powerpc/platforms/cell/spufs/run.c1
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c8
-rw-r--r--arch/powerpc/platforms/cell/spufs/switch.c6
4 files changed, 7 insertions, 20 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index e45cfa84911..87eb07f94c5 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -160,13 +160,6 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
pr_debug("%s\n", __FUNCTION__);
- if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags)) {
- /* SLBs are pre-loaded for context switch, so
- * we should never get here!
- */
- printk("%s: invalid access during switch!\n", __func__);
- return 1;
- }
slb.esid = (ea & ESID_MASK) | SLB_ESID_V;
switch(REGION_ID(ea)) {
@@ -226,11 +219,6 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr)
return 0;
}
- if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags)) {
- printk("%s: invalid access during switch!\n", __func__);
- return 1;
- }
-
spu->class_0_pending = 0;
spu->dar = ea;
spu->dsisr = dsisr;
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index fca22e18069..6221968c2a3 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -234,6 +234,7 @@ static int spu_run_fini(struct spu_context *ctx, u32 *npc,
*npc = ctx->ops->npc_read(ctx);
spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED);
+ ctx->policy = SCHED_IDLE;
spu_release(ctx);
if (signal_pending(current))
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 5915343e259..3a5972117de 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -856,21 +856,18 @@ static noinline void spusched_tick(struct spu_context *ctx)
{
struct spu_context *new = NULL;
struct spu *spu = NULL;
- u32 status;
if (spu_acquire(ctx))
BUG(); /* a kernel thread never has signals pending */
if (ctx->state != SPU_STATE_RUNNABLE)
goto out;
- if (spu_stopped(ctx, &status))
- goto out;
if (ctx->flags & SPU_CREATE_NOSCHED)
goto out;
if (ctx->policy == SCHED_FIFO)
goto out;
- if (--ctx->time_slice)
+ if (--ctx->time_slice && ctx->policy != SCHED_IDLE)
goto out;
spu = ctx->spu;
@@ -880,7 +877,8 @@ static noinline void spusched_tick(struct spu_context *ctx)
new = grab_runnable_context(ctx->prio + 1, spu->node);
if (new) {
spu_unschedule(spu, ctx);
- spu_add_to_rq(ctx);
+ if (ctx->policy != SCHED_IDLE)
+ spu_add_to_rq(ctx);
} else {
spu_context_nospu_trace(spusched_tick__newslice, ctx);
ctx->time_slice++;
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c
index 6063c88c26d..6f5886c7b1f 100644
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -720,8 +720,9 @@ static inline void set_switch_active(struct spu_state *csa, struct spu *spu)
* Restore, Step 23.
* Change the software context switch pending flag
* to context switch active.
+ *
+ * This implementation does not uses a switch active flag.
*/
- set_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags);
clear_bit(SPU_CONTEXT_SWITCH_PENDING, &spu->flags);
mb();
}
@@ -1739,9 +1740,8 @@ static inline void reset_switch_active(struct spu_state *csa, struct spu *spu)
{
/* Restore, Step 74:
* Reset the "context switch active" flag.
+ * Not performed by this implementation.
*/
- clear_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags);
- mb();
}
static inline void reenable_interrupts(struct spu_state *csa, struct spu *spu)