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drm/ttm/tests: Add eviction testing

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Add tests for ttm_bo_validate that focus on BO eviction and swapout.
Update device funcs definition with eviction-related callbacks. Add
alternative funcs where evict_flags() routes eviction to a domain
that can't allocate resources (dubbed "busy manager" in the tests).
Extract the common path of ttm_device init into a function.

Signed-off-by: Karolina Stolarek <karolina.stolarek@intel.com>
Reviewed-by: Somalapuram, Amaranath <asomalap@amd.com>
Tested-by: Somalapuram, Amaranath <asomalap@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ae8e284d6c7e6bd0be259052bd4f42e07ce24641.1718192625.git.karolina.stolarek@intel.com
This commit is contained in:
Karolina Stolarek
2024-06-12 14:03:02 +02:00
committed by Arunpravin Paneer Selvam
parent 8eda41dfc9
commit 5fe3943385
5 changed files with 569 additions and 10 deletions
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108
drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
View File

@@ -6,6 +6,42 @@
#include "ttm_kunit_helpers.h"
static const struct ttm_place sys_place = {
.fpfn = 0,
.lpfn = 0,
.mem_type = TTM_PL_SYSTEM,
.flags = TTM_PL_FLAG_FALLBACK,
};
static const struct ttm_place mock1_place = {
.fpfn = 0,
.lpfn = 0,
.mem_type = TTM_PL_MOCK1,
.flags = TTM_PL_FLAG_FALLBACK,
};
static const struct ttm_place mock2_place = {
.fpfn = 0,
.lpfn = 0,
.mem_type = TTM_PL_MOCK2,
.flags = TTM_PL_FLAG_FALLBACK,
};
static struct ttm_placement sys_placement = {
.num_placement = 1,
.placement = &sys_place,
};
static struct ttm_placement bad_placement = {
.num_placement = 1,
.placement = &mock1_place,
};
static struct ttm_placement mock_placement = {
.num_placement = 1,
.placement = &mock2_place,
};
static struct ttm_tt *ttm_tt_simple_create(struct ttm_buffer_object *bo,
uint32_t page_flags)
{
@@ -54,10 +90,52 @@ static int mock_move(struct ttm_buffer_object *bo, bool evict,
return ttm_bo_move_memcpy(bo, ctx, new_mem);
}
static void mock_evict_flags(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
switch (bo->resource->mem_type) {
case TTM_PL_VRAM:
case TTM_PL_SYSTEM:
*placement = sys_placement;
break;
case TTM_PL_TT:
*placement = mock_placement;
break;
case TTM_PL_MOCK1:
/* Purge objects coming from this domain */
break;
}
}
static void bad_evict_flags(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
*placement = bad_placement;
}
static int ttm_device_kunit_init_with_funcs(struct ttm_test_devices *priv,
struct ttm_device *ttm,
bool use_dma_alloc,
bool use_dma32,
struct ttm_device_funcs *funcs)
{
struct drm_device *drm = priv->drm;
int err;
err = ttm_device_init(ttm, funcs, drm->dev,
drm->anon_inode->i_mapping,
drm->vma_offset_manager,
use_dma_alloc, use_dma32);
return err;
}
struct ttm_device_funcs ttm_dev_funcs = {
.ttm_tt_create = ttm_tt_simple_create,
.ttm_tt_destroy = ttm_tt_simple_destroy,
.move = mock_move,
.eviction_valuable = ttm_bo_eviction_valuable,
.evict_flags = mock_evict_flags,
};
EXPORT_SYMBOL_GPL(ttm_dev_funcs);
@@ -66,18 +144,30 @@ int ttm_device_kunit_init(struct ttm_test_devices *priv,
bool use_dma_alloc,
bool use_dma32)
{
struct drm_device *drm = priv->drm;
int err;
err = ttm_device_init(ttm, &ttm_dev_funcs, drm->dev,
drm->anon_inode->i_mapping,
drm->vma_offset_manager,
use_dma_alloc, use_dma32);
return err;
return ttm_device_kunit_init_with_funcs(priv, ttm, use_dma_alloc,
use_dma32, &ttm_dev_funcs);
}
EXPORT_SYMBOL_GPL(ttm_device_kunit_init);
struct ttm_device_funcs ttm_dev_funcs_bad_evict = {
.ttm_tt_create = ttm_tt_simple_create,
.ttm_tt_destroy = ttm_tt_simple_destroy,
.move = mock_move,
.eviction_valuable = ttm_bo_eviction_valuable,
.evict_flags = bad_evict_flags,
};
EXPORT_SYMBOL_GPL(ttm_dev_funcs_bad_evict);
int ttm_device_kunit_init_bad_evict(struct ttm_test_devices *priv,
struct ttm_device *ttm,
bool use_dma_alloc,
bool use_dma32)
{
return ttm_device_kunit_init_with_funcs(priv, ttm, use_dma_alloc,
use_dma32, &ttm_dev_funcs_bad_evict);
}
EXPORT_SYMBOL_GPL(ttm_device_kunit_init_bad_evict);
struct ttm_buffer_object *ttm_bo_kunit_init(struct kunit *test,
struct ttm_test_devices *devs,
size_t size,