drm/amdgpu: add slap cache for sync objects as well
We need them all the time.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
index e367342..c48b4fc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -37,6 +37,8 @@
struct fence *fence;
};
+static struct kmem_cache *amdgpu_sync_slab;
+
/**
* amdgpu_sync_create - zero init sync object
*
@@ -133,7 +135,7 @@
return 0;
}
- e = kmalloc(sizeof(struct amdgpu_sync_entry), GFP_KERNEL);
+ e = kmem_cache_alloc(amdgpu_sync_slab, GFP_KERNEL);
if (!e)
return -ENOMEM;
@@ -214,7 +216,7 @@
f = e->fence;
hash_del(&e->node);
- kfree(e);
+ kmem_cache_free(amdgpu_sync_slab, e);
if (!fence_is_signaled(f))
return f;
@@ -237,7 +239,7 @@
hash_del(&e->node);
fence_put(e->fence);
- kfree(e);
+ kmem_cache_free(amdgpu_sync_slab, e);
}
return 0;
@@ -259,8 +261,34 @@
hash_for_each_safe(sync->fences, i, tmp, e, node) {
hash_del(&e->node);
fence_put(e->fence);
- kfree(e);
+ kmem_cache_free(amdgpu_sync_slab, e);
}
fence_put(sync->last_vm_update);
}
+
+/**
+ * amdgpu_sync_init - init sync object subsystem
+ *
+ * Allocate the slab allocator.
+ */
+int amdgpu_sync_init(void)
+{
+ amdgpu_sync_slab = kmem_cache_create(
+ "amdgpu_sync", sizeof(struct amdgpu_sync_entry), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!amdgpu_sync_slab)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * amdgpu_sync_fini - fini sync object subsystem
+ *
+ * Free the slab allocator.
+ */
+void amdgpu_sync_fini(void)
+{
+ kmem_cache_destroy(amdgpu_sync_slab);
+}