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drm/amd: add kmem cache for sched fence

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Change-Id: I45bb8ff10ef05dc3b15e31a77fbcf31117705f11
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Chunming Zhou
2015-11-05 11:41:50 +08:00
committed by Alex Deucher
parent b49c84a576
commit f5617f9dde
3 changed files with 23 additions and 2 deletions
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12
drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
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@@ -34,6 +34,9 @@ static struct amd_sched_job *
amd_sched_entity_pop_job(struct amd_sched_entity *entity);
static void amd_sched_wakeup(struct amd_gpu_scheduler *sched);
struct kmem_cache *sched_fence_slab;
atomic_t sched_fence_slab_ref = ATOMIC_INIT(0);
/* Initialize a given run queue struct */
static void amd_sched_rq_init(struct amd_sched_rq *rq)
{
@@ -450,6 +453,13 @@ int amd_sched_init(struct amd_gpu_scheduler *sched,
init_waitqueue_head(&sched->wake_up_worker);
init_waitqueue_head(&sched->job_scheduled);
atomic_set(&sched->hw_rq_count, 0);
if (atomic_inc_return(&sched_fence_slab_ref) == 1) {
sched_fence_slab = kmem_cache_create(
"amd_sched_fence", sizeof(struct amd_sched_fence), 0,
SLAB_HWCACHE_ALIGN, NULL);
if (!sched_fence_slab)
return -ENOMEM;
}
/* Each scheduler will run on a seperate kernel thread */
sched->thread = kthread_run(amd_sched_main, sched, sched->name);
@@ -470,4 +480,6 @@ void amd_sched_fini(struct amd_gpu_scheduler *sched)
{
if (sched->thread)
kthread_stop(sched->thread);
if (atomic_dec_and_test(&sched_fence_slab_ref))
kmem_cache_destroy(sched_fence_slab);
}