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Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/context.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/context.c45
1 files changed, 4 insertions, 41 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index 04ad2e364e9..a87d9ca3dba 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -41,9 +41,10 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
goto out_free;
}
spin_lock_init(&ctx->mmio_lock);
+ spin_lock_init(&ctx->mapping_lock);
kref_init(&ctx->kref);
mutex_init(&ctx->state_mutex);
- init_MUTEX(&ctx->run_sema);
+ mutex_init(&ctx->run_mutex);
init_waitqueue_head(&ctx->ibox_wq);
init_waitqueue_head(&ctx->wbox_wq);
init_waitqueue_head(&ctx->stop_wq);
@@ -51,6 +52,7 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
ctx->state = SPU_STATE_SAVED;
ctx->ops = &spu_backing_ops;
ctx->owner = get_task_mm(current);
+ INIT_LIST_HEAD(&ctx->rq);
if (gang)
spu_gang_add_ctx(gang, ctx);
ctx->rt_priority = current->rt_priority;
@@ -75,6 +77,7 @@ void destroy_spu_context(struct kref *kref)
spu_fini_csa(&ctx->csa);
if (ctx->gang)
spu_gang_remove_ctx(ctx->gang, ctx);
+ BUG_ON(!list_empty(&ctx->rq));
kfree(ctx);
}
@@ -119,46 +122,6 @@ void spu_unmap_mappings(struct spu_context *ctx)
}
/**
- * spu_acquire_exclusive - lock spu contex and protect against userspace access
- * @ctx: spu contex to lock
- *
- * Note:
- * Returns 0 and with the context locked on success
- * Returns negative error and with the context _unlocked_ on failure.
- */
-int spu_acquire_exclusive(struct spu_context *ctx)
-{
- int ret = -EINVAL;
-
- spu_acquire(ctx);
- /*
- * Context is about to be freed, so we can't acquire it anymore.
- */
- if (!ctx->owner)
- goto out_unlock;
-
- if (ctx->state == SPU_STATE_SAVED) {
- ret = spu_activate(ctx, 0);
- if (ret)
- goto out_unlock;
- } else {
- /*
- * We need to exclude userspace access to the context.
- *
- * To protect against memory access we invalidate all ptes
- * and make sure the pagefault handlers block on the mutex.
- */
- spu_unmap_mappings(ctx);
- }
-
- return 0;
-
- out_unlock:
- spu_release(ctx);
- return ret;
-}
-
-/**
* spu_acquire_runnable - lock spu contex and make sure it is in runnable state
* @ctx: spu contex to lock
*