From: Christian König <christian.koenig@xxxxxxx>
Keeping groups of BOs on the LRU is to time consuming on command submission.
Instead use the newly added BO priority to give a certain eviction order.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 69 +-----------------------------
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 12 ------
3 files changed, 5 insertions(+), 79 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 5076bc2..f399d98 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -386,6 +386,9 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
if (unlikely(r != 0))
return r;
+ bo->tbo.priority = ilog2(bo->tbo.num_pages);
+ bo->tbo.priority = min(bo->tbo.priority, TTM_MAX_BO_PRIORITY - 1);
+
if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
struct fence *fence;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 0a61930..dd086d8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1048,56 +1048,6 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
return flags;
}
-static void amdgpu_ttm_lru_removal(struct ttm_buffer_object *tbo)
-{
- struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
- unsigned i, j;
-
- for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) {
- struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i];
-
- for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
- if (&tbo->lru == lru->lru[j])
- lru->lru[j] = tbo->lru.prev;
-
- if (&tbo->swap == lru->swap_lru)
- lru->swap_lru = tbo->swap.prev;
- }
-}
-
-static struct amdgpu_mman_lru *amdgpu_ttm_lru(struct ttm_buffer_object *tbo)
-{
- struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
- unsigned log2_size = min(ilog2(tbo->num_pages),
- AMDGPU_TTM_LRU_SIZE - 1);
-
- return &adev->mman.log2_size[log2_size];
-}
-
-static struct list_head *amdgpu_ttm_lru_tail(struct ttm_buffer_object *tbo)
-{
- struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo);
- struct list_head *res = lru->lru[tbo->mem.mem_type];
-
- lru->lru[tbo->mem.mem_type] = &tbo->lru;
- while ((++lru)->lru[tbo->mem.mem_type] == res)
- lru->lru[tbo->mem.mem_type] = &tbo->lru;
-
- return res;
-}
-
-static struct list_head *amdgpu_ttm_swap_lru_tail(struct ttm_buffer_object *tbo)
-{
- struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo);
- struct list_head *res = lru->swap_lru;
-
- lru->swap_lru = &tbo->swap;
- while ((++lru)->swap_lru == res)
- lru->swap_lru = &tbo->swap;
-
- return res;
-}
-
static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
const struct ttm_place *place)
{
@@ -1136,14 +1086,12 @@ static struct ttm_bo_driver amdgpu_bo_driver = {
.fault_reserve_notify = &amdgpu_bo_fault_reserve_notify,
.io_mem_reserve = &amdgpu_ttm_io_mem_reserve,
.io_mem_free = &amdgpu_ttm_io_mem_free,
- .lru_removal = &amdgpu_ttm_lru_removal,
- .lru_tail = &amdgpu_ttm_lru_tail,
- .swap_lru_tail = &amdgpu_ttm_swap_lru_tail,
+ .lru_tail = &ttm_bo_default_lru_tail,
+ .swap_lru_tail = &ttm_bo_default_swap_lru_tail,
};
int amdgpu_ttm_init(struct amdgpu_device *adev)
{
- unsigned i, j;
int r;
r = amdgpu_ttm_global_init(adev);
@@ -1161,19 +1109,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
return r;
}
-
- for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) {
- struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i];
-
- for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
- lru->lru[j] = &adev->mman.bdev.man[j].lru[0];
- lru->swap_lru = &adev->mman.bdev.glob->swap_lru[0];
- }
-
- for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
- adev->mman.guard.lru[j] = NULL;
- adev->mman.guard.swap_lru = NULL;
-
adev->mman.initialized = true;
r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM,
adev->mc.real_vram_size >> PAGE_SHIFT);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index d1c00c0..0eabbb2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -34,13 +34,6 @@
#define AMDGPU_PL_FLAG_GWS (TTM_PL_FLAG_PRIV << 1)
#define AMDGPU_PL_FLAG_OA (TTM_PL_FLAG_PRIV << 2)
-#define AMDGPU_TTM_LRU_SIZE 20
-
-struct amdgpu_mman_lru {
- struct list_head *lru[TTM_NUM_MEM_TYPES];
- struct list_head *swap_lru;
-};
-
struct amdgpu_mman {
struct ttm_bo_global_ref bo_global_ref;
struct drm_global_reference mem_global_ref;
@@ -58,11 +51,6 @@ struct amdgpu_mman {
struct amdgpu_ring *buffer_funcs_ring;
/* Scheduler entity for buffer moves */
struct amd_sched_entity entity;
-
- /* custom LRU management */
- struct amdgpu_mman_lru log2_size[AMDGPU_TTM_LRU_SIZE];
- /* guard for log2_size array, don't add anything in between */
- struct amdgpu_mman_lru guard;
};
extern const struct ttm_mem_type_manager_func amdgpu_gtt_mgr_func;
--
2.7.4
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