struct spu_context *alloc_spu_context(struct address_space *local_store)
{
struct spu_context *ctx;
ctx = kmalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
goto out;
/* Binding to physical processor deferred
* until spu_activate().
*/
spu_init_csa(&ctx->csa);
if (!ctx->csa.lscsa) {
goto out_free;
}
spin_lock_init(&ctx->mmio_lock);
kref_init(&ctx->kref);
init_rwsem(&ctx->state_sema);
init_MUTEX(&ctx->run_sema);
init_waitqueue_head(&ctx->ibox_wq);
init_waitqueue_head(&ctx->wbox_wq);
init_waitqueue_head(&ctx->stop_wq);
ctx->ibox_fasync = NULL;
ctx->wbox_fasync = NULL;
ctx->state = SPU_STATE_SAVED;
ctx->local_store = local_store;
ctx->spu = NULL;
ctx->ops = &spu_backing_ops;
ctx->owner = get_task_mm(current);
goto out;
out_free:
kfree(ctx);
ctx = NULL;
out:
return ctx;
}
struct spu_context *alloc_spu_context(struct spu_gang *gang)
{
struct spu_context *ctx;
struct timespec ts;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
goto out;
/* Binding to physical processor deferred
* until spu_activate().
*/
if (spu_init_csa(&ctx->csa))
goto out_free;
spin_lock_init(&ctx->mmio_lock);
mutex_init(&ctx->mapping_lock);
kref_init(&ctx->kref);
mutex_init(&ctx->state_mutex);
mutex_init(&ctx->run_mutex);
init_waitqueue_head(&ctx->ibox_wq);
init_waitqueue_head(&ctx->wbox_wq);
init_waitqueue_head(&ctx->stop_wq);
init_waitqueue_head(&ctx->mfc_wq);
init_waitqueue_head(&ctx->run_wq);
ctx->state = SPU_STATE_SAVED;
ctx->ops = &spu_backing_ops;
ctx->owner = get_task_mm(current);
INIT_LIST_HEAD(&ctx->rq);
INIT_LIST_HEAD(&ctx->aff_list);
if (gang)
spu_gang_add_ctx(gang, ctx);
__spu_update_sched_info(ctx);
spu_set_timeslice(ctx);
ctx->stats.util_state = SPU_UTIL_IDLE_LOADED;
ktime_get_ts(&ts);
ctx->stats.tstamp = timespec_to_ns(&ts);
atomic_inc(&nr_spu_contexts);
goto out;
out_free:
kfree(ctx);
ctx = NULL;
out:
return ctx;
}
struct spu_context *alloc_spu_context(struct spu_gang *gang)
{
struct spu_context *ctx;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
goto out;
/* Binding to physical processor deferred
* until spu_activate().
*/
spu_init_csa(&ctx->csa);
if (!ctx->csa.lscsa) {
goto out_free;
}
spin_lock_init(&ctx->mmio_lock);
kref_init(&ctx->kref);
mutex_init(&ctx->state_mutex);
init_MUTEX(&ctx->run_sema);
init_waitqueue_head(&ctx->ibox_wq);
init_waitqueue_head(&ctx->wbox_wq);
init_waitqueue_head(&ctx->stop_wq);
init_waitqueue_head(&ctx->mfc_wq);
ctx->state = SPU_STATE_SAVED;
ctx->ops = &spu_backing_ops;
ctx->owner = get_task_mm(current);
if (gang)
spu_gang_add_ctx(gang, ctx);
ctx->rt_priority = current->rt_priority;
ctx->policy = current->policy;
ctx->prio = current->prio;
INIT_DELAYED_WORK(&ctx->sched_work, spu_sched_tick);
goto out;
out_free:
kfree(ctx);
ctx = NULL;
out:
return ctx;
}