Hi guys, TTM has a feature which allows to specify placements for normal operation as well as when all domains are "busy" and don't have free space. Not very widely used since it was a bit inflexible and required making multiple placement lists. Replace the multiple lists with flags and start to use this in amdgpu as well. As future improvement we should probably re-work was "busy" means for a domain as well. Please comment and/or test. Thanks, Christian.
Christian König
2023-Nov-27 14:54 UTC
[Nouveau] [PATCH 1/2] drm/ttm: replace busy placement with flags v3
From: Somalapuram Amaranath <Amaranath.Somalapuram at amd.com>
Instead of a list of separate busy placement add flags which indicate
that a placement should only be used when there is room or if we need to
evict.
v2: add missing TTM_PL_FLAG_IDLE for i915
v3: fix auto build test ERROR on drm-tip/drm-tip
Signed-off-by: Christian K?nig <christian.koenig at amd.com>
Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 11 +--
drivers/gpu/drm/drm_gem_vram_helper.c | 2 -
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 37 ++++----
drivers/gpu/drm/loongson/lsdc_ttm.c | 2 -
drivers/gpu/drm/nouveau/nouveau_bo.c | 59 +++++--------
drivers/gpu/drm/nouveau/nouveau_bo.h | 1 -
drivers/gpu/drm/qxl/qxl_object.c | 2 -
drivers/gpu/drm/qxl/qxl_ttm.c | 2 -
drivers/gpu/drm/radeon/radeon_object.c | 2 -
drivers/gpu/drm/radeon/radeon_ttm.c | 8 +-
drivers/gpu/drm/radeon/radeon_uvd.c | 1 -
drivers/gpu/drm/ttm/ttm_bo.c | 21 +++--
drivers/gpu/drm/ttm/ttm_resource.c | 73 ++++------------
drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 3 +-
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 99 +++++++++++++++++-----
include/drm/ttm/ttm_placement.h | 10 ++-
include/drm/ttm/ttm_resource.h | 8 +-
18 files changed, 160 insertions(+), 187 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index cef920a93924..aa0dd6dad068 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -220,9 +220,6 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo,
u32 domain)
placement->num_placement = c;
placement->placement = places;
-
- placement->num_busy_placement = c;
- placement->busy_placement = places;
}
/**
@@ -1406,8 +1403,7 @@ vm_fault_t amdgpu_bo_fault_reserve_notify(struct
ttm_buffer_object *bo)
AMDGPU_GEM_DOMAIN_GTT);
/* Avoid costly evictions; only set GTT as a busy placement */
- abo->placement.num_busy_placement = 1;
- abo->placement.busy_placement = &abo->placements[1];
+ abo->placements[0].flags |= TTM_PL_FLAG_IDLE;
r = ttm_bo_validate(bo, &abo->placement, &ctx);
if (unlikely(r == -EBUSY || r == -ERESTARTSYS))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 05991c5c8ddb..9a6a00b1af40 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -102,23 +102,19 @@ static void amdgpu_evict_flags(struct ttm_buffer_object
*bo,
/* Don't handle scatter gather BOs */
if (bo->type == ttm_bo_type_sg) {
placement->num_placement = 0;
- placement->num_busy_placement = 0;
return;
}
/* Object isn't an AMDGPU object so ignore */
if (!amdgpu_bo_is_amdgpu_bo(bo)) {
placement->placement = &placements;
- placement->busy_placement = &placements;
placement->num_placement = 1;
- placement->num_busy_placement = 1;
return;
}
abo = ttm_to_amdgpu_bo(bo);
if (abo->flags & AMDGPU_GEM_CREATE_DISCARDABLE) {
placement->num_placement = 0;
- placement->num_busy_placement = 0;
return;
}
@@ -128,13 +124,13 @@ static void amdgpu_evict_flags(struct ttm_buffer_object
*bo,
case AMDGPU_PL_OA:
case AMDGPU_PL_DOORBELL:
placement->num_placement = 0;
- placement->num_busy_placement = 0;
return;
case TTM_PL_VRAM:
if (!adev->mman.buffer_funcs_enabled) {
/* Move to system memory */
amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
+
} else if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
!(abo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) &&
amdgpu_bo_in_cpu_visible_vram(abo)) {
@@ -149,8 +145,7 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
AMDGPU_GEM_DOMAIN_CPU);
abo->placements[0].fpfn = adev->gmc.visible_vram_size >>
PAGE_SHIFT;
abo->placements[0].lpfn = 0;
- abo->placement.busy_placement = &abo->placements[1];
- abo->placement.num_busy_placement = 1;
+ abo->placements[0].flags |= TTM_PL_FLAG_IDLE;
} else {
/* Move to GTT memory */
amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT |
@@ -967,8 +962,6 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
/* allocate GART space */
placement.num_placement = 1;
placement.placement = &placements;
- placement.num_busy_placement = 1;
- placement.busy_placement = &placements;
placements.fpfn = 0;
placements.lpfn = adev->gmc.gart_size >> PAGE_SHIFT;
placements.mem_type = TTM_PL_TT;
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c
b/drivers/gpu/drm/drm_gem_vram_helper.c
index b67eafa55715..75f2eaf0d5b6 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -147,7 +147,6 @@ static void drm_gem_vram_placement(struct
drm_gem_vram_object *gbo,
invariant_flags = TTM_PL_FLAG_TOPDOWN;
gbo->placement.placement = gbo->placements;
- gbo->placement.busy_placement = gbo->placements;
if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM) {
gbo->placements[c].mem_type = TTM_PL_VRAM;
@@ -160,7 +159,6 @@ static void drm_gem_vram_placement(struct
drm_gem_vram_object *gbo,
}
gbo->placement.num_placement = c;
- gbo->placement.num_busy_placement = c;
for (i = 0; i < c; ++i) {
gbo->placements[i].fpfn = 0;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 9227f8146a58..48fc9779fd50 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -65,8 +65,6 @@ static const struct ttm_place sys_placement_flags = {
static struct ttm_placement i915_sys_placement = {
.num_placement = 1,
.placement = &sys_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &sys_placement_flags,
};
/**
@@ -157,32 +155,28 @@ i915_ttm_place_from_region(const struct
intel_memory_region *mr,
static void
i915_ttm_placement_from_obj(const struct drm_i915_gem_object *obj,
- struct ttm_place *requested,
- struct ttm_place *busy,
+ struct ttm_place *places,
struct ttm_placement *placement)
{
unsigned int num_allowed = obj->mm.n_placements;
unsigned int flags = obj->flags;
unsigned int i;
- placement->num_placement = 1;
+ places[0].flags |= TTM_PL_FLAG_IDLE;
i915_ttm_place_from_region(num_allowed ? obj->mm.placements[0] :
- obj->mm.region, requested, obj->bo_offset,
+ obj->mm.region, &places[0], obj->bo_offset,
obj->base.size, flags);
/* Cache this on object? */
- placement->num_busy_placement = num_allowed;
- for (i = 0; i < placement->num_busy_placement; ++i)
- i915_ttm_place_from_region(obj->mm.placements[i], busy + i,
- obj->bo_offset, obj->base.size, flags);
-
- if (num_allowed == 0) {
- *busy = *requested;
- placement->num_busy_placement = 1;
+ for (i = 0; i < num_allowed; ++i) {
+ i915_ttm_place_from_region(obj->mm.placements[i],
+ &places[i + 1], obj->bo_offset,
+ obj->base.size, flags);
+ places[i + 1].flags |= TTM_PL_FLAG_BUSY;
}
- placement->placement = requested;
- placement->busy_placement = busy;
+ placement->num_placement = num_allowed + 1;
+ placement->placement = places;
}
static int i915_ttm_tt_shmem_populate(struct ttm_device *bdev,
@@ -789,7 +783,8 @@ static int __i915_ttm_get_pages(struct drm_i915_gem_object
*obj,
int ret;
/* First try only the requested placement. No eviction. */
- real_num_busy = fetch_and_zero(&placement->num_busy_placement);
+ real_num_busy = placement->num_placement;
+ placement->num_placement = 1;
ret = ttm_bo_validate(bo, placement, &ctx);
if (ret) {
ret = i915_ttm_err_to_gem(ret);
@@ -805,7 +800,7 @@ static int __i915_ttm_get_pages(struct drm_i915_gem_object
*obj,
* If the initial attempt fails, allow all accepted placements,
* evicting if necessary.
*/
- placement->num_busy_placement = real_num_busy;
+ placement->num_placement = real_num_busy;
ret = ttm_bo_validate(bo, placement, &ctx);
if (ret)
return i915_ttm_err_to_gem(ret);
@@ -839,7 +834,7 @@ static int __i915_ttm_get_pages(struct drm_i915_gem_object
*obj,
static int i915_ttm_get_pages(struct drm_i915_gem_object *obj)
{
- struct ttm_place requested, busy[I915_TTM_MAX_PLACEMENTS];
+ struct ttm_place places[I915_TTM_MAX_PLACEMENTS + 1];
struct ttm_placement placement;
/* restricted by sg_alloc_table */
@@ -849,7 +844,7 @@ static int i915_ttm_get_pages(struct drm_i915_gem_object
*obj)
GEM_BUG_ON(obj->mm.n_placements > I915_TTM_MAX_PLACEMENTS);
/* Move to the requested placement. */
- i915_ttm_placement_from_obj(obj, &requested, busy, &placement);
+ i915_ttm_placement_from_obj(obj, places, &placement);
return __i915_ttm_get_pages(obj, &placement);
}
@@ -879,9 +874,7 @@ static int __i915_ttm_migrate(struct drm_i915_gem_object
*obj,
i915_ttm_place_from_region(mr, &requested, obj->bo_offset,
obj->base.size, flags);
placement.num_placement = 1;
- placement.num_busy_placement = 1;
placement.placement = &requested;
- placement.busy_placement = &requested;
ret = __i915_ttm_get_pages(obj, &placement);
if (ret)
diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.c
b/drivers/gpu/drm/loongson/lsdc_ttm.c
index bf79dc55afa4..465f622ac05d 100644
--- a/drivers/gpu/drm/loongson/lsdc_ttm.c
+++ b/drivers/gpu/drm/loongson/lsdc_ttm.c
@@ -54,7 +54,6 @@ static void lsdc_bo_set_placement(struct lsdc_bo *lbo, u32
domain)
pflags |= TTM_PL_FLAG_TOPDOWN;
lbo->placement.placement = lbo->placements;
- lbo->placement.busy_placement = lbo->placements;
if (domain & LSDC_GEM_DOMAIN_VRAM) {
lbo->placements[c].mem_type = TTM_PL_VRAM;
@@ -77,7 +76,6 @@ static void lsdc_bo_set_placement(struct lsdc_bo *lbo, u32
domain)
}
lbo->placement.num_placement = c;
- lbo->placement.num_busy_placement = c;
for (i = 0; i < c; ++i) {
lbo->placements[i].fpfn = 0;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c
b/drivers/gpu/drm/nouveau/nouveau_bo.c
index b7dda486a7ea..a982cbb6f5b2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -403,27 +403,6 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int
align,
return 0;
}
-static void
-set_placement_list(struct ttm_place *pl, unsigned *n, uint32_t domain)
-{
- *n = 0;
-
- if (domain & NOUVEAU_GEM_DOMAIN_VRAM) {
- pl[*n].mem_type = TTM_PL_VRAM;
- pl[*n].flags = 0;
- (*n)++;
- }
- if (domain & NOUVEAU_GEM_DOMAIN_GART) {
- pl[*n].mem_type = TTM_PL_TT;
- pl[*n].flags = 0;
- (*n)++;
- }
- if (domain & NOUVEAU_GEM_DOMAIN_CPU) {
- pl[*n].mem_type = TTM_PL_SYSTEM;
- pl[(*n)++].flags = 0;
- }
-}
-
static void
set_placement_range(struct nouveau_bo *nvbo, uint32_t domain)
{
@@ -451,10 +430,6 @@ set_placement_range(struct nouveau_bo *nvbo, uint32_t
domain)
nvbo->placements[i].fpfn = fpfn;
nvbo->placements[i].lpfn = lpfn;
}
- for (i = 0; i < nvbo->placement.num_busy_placement; ++i) {
- nvbo->busy_placements[i].fpfn = fpfn;
- nvbo->busy_placements[i].lpfn = lpfn;
- }
}
}
@@ -462,15 +437,32 @@ void
nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t domain,
uint32_t busy)
{
- struct ttm_placement *pl = &nvbo->placement;
+ struct ttm_place *pl = nvbo->placements;
+ unsigned *n = &nvbo->placement.num_placement;
- pl->placement = nvbo->placements;
- set_placement_list(nvbo->placements, &pl->num_placement, domain);
+ domain |= busy;
- pl->busy_placement = nvbo->busy_placements;
- set_placement_list(nvbo->busy_placements, &pl->num_busy_placement,
- domain | busy);
+ *n = 0;
+ if (domain & NOUVEAU_GEM_DOMAIN_VRAM) {
+ pl[*n].mem_type = TTM_PL_VRAM;
+ pl[*n].flags = busy & NOUVEAU_GEM_DOMAIN_VRAM ?
+ TTM_PL_FLAG_BUSY : 0;
+ (*n)++;
+ }
+ if (domain & NOUVEAU_GEM_DOMAIN_GART) {
+ pl[*n].mem_type = TTM_PL_TT;
+ pl[*n].flags = busy & NOUVEAU_GEM_DOMAIN_GART ?
+ TTM_PL_FLAG_BUSY : 0;
+ (*n)++;
+ }
+ if (domain & NOUVEAU_GEM_DOMAIN_CPU) {
+ pl[*n].mem_type = TTM_PL_SYSTEM;
+ pl[*n].flags = busy & NOUVEAU_GEM_DOMAIN_CPU ?
+ TTM_PL_FLAG_BUSY : 0;
+ (*n)++;
+ }
+ nvbo->placement.placement = nvbo->placements;
set_placement_range(nvbo, domain);
}
@@ -1313,11 +1305,6 @@ vm_fault_t nouveau_ttm_fault_reserve_notify(struct
ttm_buffer_object *bo)
nvbo->placements[i].lpfn = mappable;
}
- for (i = 0; i < nvbo->placement.num_busy_placement; ++i) {
- nvbo->busy_placements[i].fpfn = 0;
- nvbo->busy_placements[i].lpfn = mappable;
- }
-
nouveau_bo_placement_set(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, 0);
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h
b/drivers/gpu/drm/nouveau/nouveau_bo.h
index 70c551921a9e..e9dfab6a8156 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.h
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.h
@@ -15,7 +15,6 @@ struct nouveau_bo {
struct ttm_placement placement;
u32 valid_domains;
struct ttm_place placements[3];
- struct ttm_place busy_placements[3];
bool force_coherent;
struct ttm_bo_kmap_obj kmap;
struct list_head head;
diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index 06a58dad5f5c..1e46b0a6e478 100644
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -66,7 +66,6 @@ void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32
domain)
pflag |= TTM_PL_FLAG_TOPDOWN;
qbo->placement.placement = qbo->placements;
- qbo->placement.busy_placement = qbo->placements;
if (domain == QXL_GEM_DOMAIN_VRAM) {
qbo->placements[c].mem_type = TTM_PL_VRAM;
qbo->placements[c++].flags = pflag;
@@ -86,7 +85,6 @@ void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32
domain)
qbo->placements[c++].flags = 0;
}
qbo->placement.num_placement = c;
- qbo->placement.num_busy_placement = c;
for (i = 0; i < c; ++i) {
qbo->placements[i].fpfn = 0;
qbo->placements[i].lpfn = 0;
diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
index 1a82629bce3f..765a144cea14 100644
--- a/drivers/gpu/drm/qxl/qxl_ttm.c
+++ b/drivers/gpu/drm/qxl/qxl_ttm.c
@@ -60,9 +60,7 @@ static void qxl_evict_flags(struct ttm_buffer_object *bo,
if (!qxl_ttm_bo_is_qxl_bo(bo)) {
placement->placement = &placements;
- placement->busy_placement = &placements;
placement->num_placement = 1;
- placement->num_busy_placement = 1;
return;
}
qbo = to_qxl_bo(bo);
diff --git a/drivers/gpu/drm/radeon/radeon_object.c
b/drivers/gpu/drm/radeon/radeon_object.c
index 10c0fbd9d2b4..a955f8a2f7fe 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -78,7 +78,6 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo,
u32 domain)
u32 c = 0, i;
rbo->placement.placement = rbo->placements;
- rbo->placement.busy_placement = rbo->placements;
if (domain & RADEON_GEM_DOMAIN_VRAM) {
/* Try placing BOs which don't need CPU access outside of the
* CPU accessible part of VRAM
@@ -114,7 +113,6 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo,
u32 domain)
}
rbo->placement.num_placement = c;
- rbo->placement.num_busy_placement = c;
for (i = 0; i < c; ++i) {
if ((rbo->flags & RADEON_GEM_CPU_ACCESS) &&
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c
b/drivers/gpu/drm/radeon/radeon_ttm.c
index de4e6d78f1e1..d641f3040117 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -92,9 +92,7 @@ static void radeon_evict_flags(struct ttm_buffer_object *bo,
if (!radeon_ttm_bo_is_radeon_bo(bo)) {
placement->placement = &placements;
- placement->busy_placement = &placements;
placement->num_placement = 1;
- placement->num_busy_placement = 1;
return;
}
rbo = container_of(bo, struct radeon_bo, tbo);
@@ -114,15 +112,11 @@ static void radeon_evict_flags(struct ttm_buffer_object
*bo,
*/
radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM |
RADEON_GEM_DOMAIN_GTT);
- rbo->placement.num_busy_placement = 0;
for (i = 0; i < rbo->placement.num_placement; i++) {
if (rbo->placements[i].mem_type == TTM_PL_VRAM) {
if (rbo->placements[i].fpfn < fpfn)
rbo->placements[i].fpfn = fpfn;
- } else {
- rbo->placement.busy_placement - &rbo->placements[i];
- rbo->placement.num_busy_placement = 1;
+ rbo->placements[0].flags |= TTM_PL_FLAG_IDLE;
}
}
} else
diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c
b/drivers/gpu/drm/radeon/radeon_uvd.c
index a2cda184b2b2..058a1c8451b2 100644
--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -324,7 +324,6 @@ void radeon_uvd_force_into_uvd_segment(struct radeon_bo
*rbo,
rbo->placements[1].fpfn += (256 * 1024 * 1024) >> PAGE_SHIFT;
rbo->placements[1].lpfn += (256 * 1024 * 1024) >> PAGE_SHIFT;
rbo->placement.num_placement++;
- rbo->placement.num_busy_placement++;
}
void radeon_uvd_free_handles(struct radeon_device *rdev, struct drm_file *filp)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index edf10618fe2b..03b6a16895b0 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -410,8 +410,8 @@ static int ttm_bo_bounce_temp_buffer(struct
ttm_buffer_object *bo,
struct ttm_resource *hop_mem;
int ret;
- hop_placement.num_placement = hop_placement.num_busy_placement = 1;
- hop_placement.placement = hop_placement.busy_placement = hop;
+ hop_placement.num_placement = 1;
+ hop_placement.placement = hop;
/* find space in the bounce domain */
ret = ttm_bo_mem_space(bo, &hop_placement, &hop_mem, ctx);
@@ -440,10 +440,9 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo,
dma_resv_assert_held(bo->base.resv);
placement.num_placement = 0;
- placement.num_busy_placement = 0;
bdev->funcs->evict_flags(bo, &placement);
- if (!placement.num_placement && !placement.num_busy_placement) {
+ if (!placement.num_placement) {
ret = ttm_bo_wait_ctx(bo, ctx);
if (ret)
return ret;
@@ -791,6 +790,9 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
const struct ttm_place *place = &placement->placement[i];
struct ttm_resource_manager *man;
+ if (place->flags & TTM_PL_FLAG_BUSY)
+ continue;
+
man = ttm_manager_type(bdev, place->mem_type);
if (!man || !ttm_resource_manager_used(man))
continue;
@@ -813,10 +815,13 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
return 0;
}
- for (i = 0; i < placement->num_busy_placement; ++i) {
- const struct ttm_place *place = &placement->busy_placement[i];
+ for (i = 0; i < placement->num_placement; ++i) {
+ const struct ttm_place *place = &placement->placement[i];
struct ttm_resource_manager *man;
+ if (place->flags & TTM_PL_FLAG_IDLE)
+ continue;
+
man = ttm_manager_type(bdev, place->mem_type);
if (!man || !ttm_resource_manager_used(man))
continue;
@@ -904,11 +909,11 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
/*
* Remove the backing store if no placement is given.
*/
- if (!placement->num_placement && !placement->num_busy_placement)
+ if (!placement->num_placement)
return ttm_bo_pipeline_gutting(bo);
/* Check whether we need to move buffer. */
- if (bo->resource && ttm_resource_compat(bo->resource,
placement))
+ if (bo->resource && ttm_resource_compatible(bo->resource,
placement))
return 0;
/* Moving of pinned BOs is forbidden */
diff --git a/drivers/gpu/drm/ttm/ttm_resource.c
b/drivers/gpu/drm/ttm/ttm_resource.c
index 46ff9c75bb12..3cf1db122980 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -288,37 +288,15 @@ bool ttm_resource_intersects(struct ttm_device *bdev,
}
/**
- * ttm_resource_compatible - test for compatibility
+ * ttm_resource_compatible - check if resource is compatible with placement
*
- * @bdev: TTM device structure
- * @res: The resource to test
- * @place: The placement to test
- * @size: How many bytes the new allocation needs.
- *
- * Test if @res compatible with @place and @size.
+ * @res: the resource to check
+ * @placement: the placement to check against
*
- * Returns true if the res placement compatible with @place and @size.
+ * Returns true if the placement is compatible.
*/
-bool ttm_resource_compatible(struct ttm_device *bdev,
- struct ttm_resource *res,
- const struct ttm_place *place,
- size_t size)
-{
- struct ttm_resource_manager *man;
-
- if (!res || !place)
- return false;
-
- man = ttm_manager_type(bdev, res->mem_type);
- if (!man->func->compatible)
- return true;
-
- return man->func->compatible(man, res, place, size);
-}
-
-static bool ttm_resource_places_compat(struct ttm_resource *res,
- const struct ttm_place *places,
- unsigned num_placement)
+bool ttm_resource_compatible(struct ttm_resource *res,
+ struct ttm_placement *placement)
{
struct ttm_buffer_object *bo = res->bo;
struct ttm_device *bdev = bo->bdev;
@@ -327,44 +305,25 @@ static bool ttm_resource_places_compat(struct ttm_resource
*res,
if (res->placement & TTM_PL_FLAG_TEMPORARY)
return false;
- for (i = 0; i < num_placement; i++) {
- const struct ttm_place *heap = &places[i];
+ for (i = 0; i < placement->num_placement; i++) {
+ const struct ttm_place *place = &placement->placement[i];
+ struct ttm_resource_manager *man;
- if (!ttm_resource_compatible(bdev, res, heap, bo->base.size))
+ if (res->mem_type != place->mem_type)
+ continue;
+
+ man = ttm_manager_type(bdev, res->mem_type);
+ if (man->func->compatible &&
+ !man->func->compatible(man, res, place, bo->base.size))
continue;
- if ((res->mem_type == heap->mem_type) &&
- (!(heap->flags & TTM_PL_FLAG_CONTIGUOUS) ||
+ if ((!(place->flags & TTM_PL_FLAG_CONTIGUOUS) ||
(res->placement & TTM_PL_FLAG_CONTIGUOUS)))
return true;
}
return false;
}
-/**
- * ttm_resource_compat - check if resource is compatible with placement
- *
- * @res: the resource to check
- * @placement: the placement to check against
- *
- * Returns true if the placement is compatible.
- */
-bool ttm_resource_compat(struct ttm_resource *res,
- struct ttm_placement *placement)
-{
- if (ttm_resource_places_compat(res, placement->placement,
- placement->num_placement))
- return true;
-
- if ((placement->busy_placement != placement->placement ||
- placement->num_busy_placement > placement->num_placement)
&&
- ttm_resource_places_compat(res, placement->busy_placement,
- placement->num_busy_placement))
- return true;
-
- return false;
-}
-
void ttm_resource_set_bo(struct ttm_resource *res,
struct ttm_buffer_object *bo)
{
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
index 2bfac3aad7b7..7d9c5227d7bb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -179,6 +179,7 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private
*dev_priv,
struct ttm_buffer_object *bo = &buf->tbo;
int ret = 0;
+
vmw_execbuf_release_pinned_bo(dev_priv);
ret = ttm_bo_reserve(bo, interruptible, false, NULL);
if (unlikely(ret != 0))
@@ -821,8 +822,6 @@ void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32
busy_domain)
__func__, bo->tbo.resource->mem_type, domain);
}
- pl->busy_placement = bo->busy_places;
- pl->num_busy_placement = set_placement_list(bo->busy_places,
busy_domain);
}
void vmw_bo_placement_set_default_accelerated(struct vmw_bo *bo)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index af8562c95cc3..e243c9266453 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -36,6 +36,49 @@ static const struct ttm_place vram_placement_flags = {
.flags = 0
};
+struct ttm_placement vmw_vram_placement = {
+ .num_placement = 1,
+ .placement = &vram_placement_flags,
+};
+
+static const struct ttm_place vram_gmr_placement_flags[] = {
+ {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = TTM_PL_VRAM,
+ .flags = TTM_PL_FLAG_IDLE
+ }, {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = VMW_PL_GMR,
+ .flags = 0
+ }
+};
+
+struct ttm_placement vmw_vram_gmr_placement = {
+ .num_placement = 2,
+ .placement = vram_gmr_placement_flags,
+};
+
+static const struct ttm_place vram_sys_placement_flags[] = {
+ {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = TTM_PL_VRAM,
+ .flags = TTM_PL_FLAG_IDLE
+ }, {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = TTM_PL_SYSTEM,
+ .flags = TTM_PL_FLAG_BUSY
+ }
+};
+
+struct ttm_placement vmw_vram_sys_placement = {
+ .num_placement = 2,
+ .placement = vram_sys_placement_flags,
+};
+
static const struct ttm_place sys_placement_flags = {
.fpfn = 0,
.lpfn = 0,
@@ -43,46 +86,64 @@ static const struct ttm_place sys_placement_flags = {
.flags = 0
};
-static const struct ttm_place gmr_placement_flags = {
+struct ttm_placement vmw_sys_placement = {
+ .num_placement = 1,
+ .placement = &sys_placement_flags,
+};
+
+static const struct ttm_place vmw_sys_placement_flags = {
.fpfn = 0,
.lpfn = 0,
- .mem_type = VMW_PL_GMR,
+ .mem_type = VMW_PL_SYSTEM,
.flags = 0
};
-struct ttm_placement vmw_vram_placement = {
+struct ttm_placement vmw_pt_sys_placement = {
.num_placement = 1,
- .placement = &vram_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &vram_placement_flags
+ .placement = &vmw_sys_placement_flags,
};
-static const struct ttm_place vram_gmr_placement_flags[] = {
+static const struct ttm_place gmr_vram_placement_flags[] = {
{
.fpfn = 0,
.lpfn = 0,
- .mem_type = TTM_PL_VRAM,
+ .mem_type = VMW_PL_GMR,
.flags = 0
}, {
.fpfn = 0,
.lpfn = 0,
- .mem_type = VMW_PL_GMR,
- .flags = 0
+ .mem_type = TTM_PL_VRAM,
+ .flags = TTM_PL_FLAG_BUSY
}
};
-struct ttm_placement vmw_vram_gmr_placement = {
+struct ttm_placement vmw_srf_placement = {
.num_placement = 2,
- .placement = vram_gmr_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &gmr_placement_flags
+ .placement = gmr_vram_placement_flags
};
-struct ttm_placement vmw_sys_placement = {
- .num_placement = 1,
- .placement = &sys_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &sys_placement_flags
+static const struct ttm_place nonfixed_placement_flags[] = {
+ {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = TTM_PL_SYSTEM,
+ .flags = 0
+ }, {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = VMW_PL_GMR,
+ .flags = TTM_PL_FLAG_IDLE
+ }, {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = VMW_PL_MOB,
+ .flags = TTM_PL_FLAG_IDLE
+ }
+};
+
+struct ttm_placement vmw_nonfixed_placement = {
+ .num_placement = 3,
+ .placement = nonfixed_placement_flags,
};
const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt);
diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h
index 8074d0f6cae5..c70e489e1f1e 100644
--- a/include/drm/ttm/ttm_placement.h
+++ b/include/drm/ttm/ttm_placement.h
@@ -64,6 +64,12 @@
/* For multihop handling */
#define TTM_PL_FLAG_TEMPORARY (1 << 2)
+/* Placement is never used during eviction */
+#define TTM_PL_FLAG_IDLE (1 << 3)
+
+/* Placement is only used during eviction */
+#define TTM_PL_FLAG_BUSY (1 << 4)
+
/**
* struct ttm_place
*
@@ -86,16 +92,12 @@ struct ttm_place {
*
* @num_placement: number of preferred placements
* @placement: preferred placements
- * @num_busy_placement: number of preferred placements when need to evict
buffer
- * @busy_placement: preferred placements when need to evict buffer
*
* Structure indicating the placement you request for an object.
*/
struct ttm_placement {
unsigned num_placement;
const struct ttm_place *placement;
- unsigned num_busy_placement;
- const struct ttm_place *busy_placement;
};
#endif
diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
index 78a226eba953..1afa13f0c22b 100644
--- a/include/drm/ttm/ttm_resource.h
+++ b/include/drm/ttm/ttm_resource.h
@@ -365,12 +365,8 @@ bool ttm_resource_intersects(struct ttm_device *bdev,
struct ttm_resource *res,
const struct ttm_place *place,
size_t size);
-bool ttm_resource_compatible(struct ttm_device *bdev,
- struct ttm_resource *res,
- const struct ttm_place *place,
- size_t size);
-bool ttm_resource_compat(struct ttm_resource *res,
- struct ttm_placement *placement);
+bool ttm_resource_compatible(struct ttm_resource *res,
+ struct ttm_placement *placement);
void ttm_resource_set_bo(struct ttm_resource *res,
struct ttm_buffer_object *bo);
--
2.34.1
Christian König
2023-Nov-27 14:54 UTC
[Nouveau] [PATCH 2/2] drm/amdgpu: use GTT only as fallback for VRAM|GTT
Try to fill up VRAM as well by setting the busy flag on GTT allocations. This fixes the issue that when VRAM was evacuated for suspend it's never filled up again unless the application is restarted. Signed-off-by: Christian K?nig <christian.koenig at amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index aa0dd6dad068..ddc8fb4db678 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -173,6 +173,12 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain) abo->flags & AMDGPU_GEM_CREATE_PREEMPTIBLE ? AMDGPU_PL_PREEMPT : TTM_PL_TT; places[c].flags = 0; + /* + * When GTT is just an alternative to VRAM make sure that we + * only use it as fallback and still try to fill up VRAM first. + */ + if (domain & AMDGPU_GEM_DOMAIN_VRAM) + places[c].flags |= TTM_PL_FLAG_BUSY; c++; } -- 2.34.1