From 257bf15a4b9795f8b352beb6e72a7e3e5aab8d27 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Tue, 16 Feb 2016 11:24:58 +0100 Subject: [PATCH] drm/amdgpu: add slap cache for sync objects as well MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We need them all the time. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Chunming Zhou --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 36 +++++++++++++++++++++--- 3 files changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index fab6ddb26b5b..3e4ec56919c7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -634,6 +634,8 @@ int amdgpu_sync_resv(struct amdgpu_device *adev, struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync); int amdgpu_sync_wait(struct amdgpu_sync *sync); void amdgpu_sync_free(struct amdgpu_sync *sync); +int amdgpu_sync_init(void); +void amdgpu_sync_fini(void); /* * GART structures, functions & helpers diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index ce79a8b605a0..875333bb4e45 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -539,6 +539,7 @@ static struct pci_driver amdgpu_kms_pci_driver = { static int __init amdgpu_init(void) { + amdgpu_sync_init(); #ifdef CONFIG_VGA_CONSOLE if (vgacon_text_force()) { DRM_ERROR("VGACON disables amdgpu kernel modesetting.\n"); @@ -563,6 +564,7 @@ static void __exit amdgpu_exit(void) amdgpu_amdkfd_fini(); drm_pci_exit(driver, pdriver); amdgpu_unregister_atpx_handler(); + amdgpu_sync_fini(); } module_init(amdgpu_init); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c index e3673422aac8..c48b4fce5e57 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c @@ -37,6 +37,8 @@ struct amdgpu_sync_entry { struct fence *fence; }; +static struct kmem_cache *amdgpu_sync_slab; + /** * amdgpu_sync_create - zero init sync object * @@ -133,7 +135,7 @@ int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync, 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 @@ struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync) 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 @@ int amdgpu_sync_wait(struct amdgpu_sync *sync) hash_del(&e->node); fence_put(e->fence); - kfree(e); + kmem_cache_free(amdgpu_sync_slab, e); } return 0; @@ -259,8 +261,34 @@ void amdgpu_sync_free(struct amdgpu_sync *sync) 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); +} -- 2.20.1