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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
View File

@ -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);
}

3
drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
View File

@ -30,6 +30,9 @@
struct amd_gpu_scheduler;
struct amd_sched_rq;
extern struct kmem_cache *sched_fence_slab;
extern atomic_t sched_fence_slab_ref;
/**
* A scheduler entity is a wrapper around a job queue or a group
* of other entities. Entities take turns emitting jobs from their

10
drivers/gpu/drm/amd/scheduler/sched_fence.c
View File

@ -32,7 +32,7 @@ struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *s_entity
struct amd_sched_fence *fence = NULL;
unsigned seq;
fence = kzalloc(sizeof(struct amd_sched_fence), GFP_KERNEL);
fence = kmem_cache_zalloc(sched_fence_slab, GFP_KERNEL);
if (fence == NULL)
return NULL;
fence->owner = owner;
@ -71,11 +71,17 @@ static bool amd_sched_fence_enable_signaling(struct fence *f)
return true;
}
static void amd_sched_fence_release(struct fence *f)
{
struct amd_sched_fence *fence = to_amd_sched_fence(f);
kmem_cache_free(sched_fence_slab, fence);
}
const struct fence_ops amd_sched_fence_ops = {
.get_driver_name = amd_sched_fence_get_driver_name,
.get_timeline_name = amd_sched_fence_get_timeline_name,
.enable_signaling = amd_sched_fence_enable_signaling,
.signaled = NULL,
.wait = fence_default_wait,
.release = NULL,
.release = amd_sched_fence_release,
};