Hi guys, same as the last time. Things I've changed: Implemented the requirements from Zack to correctly fill in the busy placements for VMWGFX. Renamed the placement flags to desired and fallback as suggested by Michel. Rebased on drm-tip instead of drm-misc-next and fixed XE as well. Please review and comment, Christian.
Christian König
2024-Jan-12 12:51 UTC
[PATCH 1/5] drm/vmwgfx: remove vmw_vram_gmr_placement
Seems to be unused.
Signed-off-by: Christian K?nig <christian.koenig at amd.com>
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 -
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 28 ----------------------
2 files changed, 29 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 3cd5090dedfc..12efecc17df6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -942,7 +942,6 @@ vmw_is_cursor_bypass3_enabled(const struct vmw_private
*dev_priv)
extern const size_t vmw_tt_size;
extern struct ttm_placement vmw_vram_placement;
-extern struct ttm_placement vmw_vram_gmr_placement;
extern struct ttm_placement vmw_sys_placement;
extern struct ttm_device_funcs vmw_bo_driver;
extern const struct vmw_sg_table *
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index af8562c95cc3..a84fffcef8e1 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -43,13 +43,6 @@ static const struct ttm_place sys_placement_flags = {
.flags = 0
};
-static const struct ttm_place gmr_placement_flags = {
- .fpfn = 0,
- .lpfn = 0,
- .mem_type = VMW_PL_GMR,
- .flags = 0
-};
-
struct ttm_placement vmw_vram_placement = {
.num_placement = 1,
.placement = &vram_placement_flags,
@@ -57,27 +50,6 @@ struct ttm_placement vmw_vram_placement = {
.busy_placement = &vram_placement_flags
};
-static const struct ttm_place vram_gmr_placement_flags[] = {
- {
- .fpfn = 0,
- .lpfn = 0,
- .mem_type = TTM_PL_VRAM,
- .flags = 0
- }, {
- .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,
- .num_busy_placement = 1,
- .busy_placement = &gmr_placement_flags
-};
-
struct ttm_placement vmw_sys_placement = {
.num_placement = 1,
.placement = &sys_placement_flags,
--
2.34.1
Christian König
2024-Jan-12 12:51 UTC
[PATCH 2/5] drm/ttm: return ENOSPC from ttm_bo_mem_space
Only convert it to ENOMEM in ttm_bo_validate.
This allows ttm_bo_validate to distinct between an out of memory
situation and just out of space in a placement domain.
Signed-off-by: Christian K?nig <christian.koenig at amd.com>
---
drivers/gpu/drm/ttm/ttm_bo.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index edf10618fe2b..8c1eaa74fa21 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -830,7 +830,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
goto error;
}
- ret = -ENOMEM;
+ ret = -ENOSPC;
if (!type_found) {
pr_err(TTM_PFX "No compatible memory type found\n");
ret = -EINVAL;
@@ -916,6 +916,9 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
return -EINVAL;
ret = ttm_bo_move_buffer(bo, placement, ctx);
+ /* For backward compatibility with userspace */
+ if (ret == -ENOSPC)
+ return -ENOMEM;
if (ret)
return ret;
--
2.34.1
Christian König
2024-Jan-12 12:51 UTC
[PATCH 3/5] drm/ttm: replace busy placement with flags v6
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
v4: fix some typos pointed out by checkpatch
v5: cleanup some rebase problems with VMWGFX
v6: implement some missing VMWGFX functionality pointed out by Zack,
rename the flags as suggested by Michel, rebase on drm-tip and
adjust XE as well
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 | 33 +++++++---
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 4 --
drivers/gpu/drm/xe/xe_bo.c | 33 +++++-----
include/drm/ttm/ttm_placement.h | 10 +--
include/drm/ttm/ttm_resource.h | 8 +--
19 files changed, 118 insertions(+), 197 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 425cebcc5cbf..b671b0665492 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;
}
/**
@@ -1397,8 +1394,7 @@ 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_DESIRED;
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 75c9fd2c6c2a..8722beba494e 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_DESIRED;
} else {
/* Move to GTT memory */
amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT |
@@ -966,8 +961,6 @@ 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 6b69ef0cdbb4..80c6cafc8887 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_DESIRED;
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_FALLBACK;
}
- 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 00cc7d1abaa3..56dcd25db1ce 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -404,27 +404,6 @@ 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)
{
@@ -452,10 +431,6 @@ 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;
- }
}
}
@@ -463,15 +438,32 @@ void
nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t domain,
uint32_t busy)
{
- struct ttm_placement *pl = &nvbo->placement;
+ unsigned int *n = &nvbo->placement.num_placement;
+ struct ttm_place *pl = nvbo->placements;
- 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_FALLBACK : 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_FALLBACK : 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_FALLBACK : 0;
+ (*n)++;
+ }
+ nvbo->placement.placement = nvbo->placements;
set_placement_range(nvbo, domain);
}
@@ -1314,11 +1306,6 @@ 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..2078b0000e22 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_DESIRED;
}
}
} 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 8c1eaa74fa21..a5e11a92e0b9 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_FALLBACK)
+ 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_DESIRED)
+ 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 02b96d23fdb9..fb14f7716cf8 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -291,37 +291,15 @@ 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;
@@ -330,44 +308,25 @@ 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..bfd41ce3c8f4 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -742,9 +742,21 @@ void vmw_bo_move_notify(struct ttm_buffer_object *bo,
vmw_resource_unbind_list(vbo);
}
+static u32 placement_flags(u32 domain, u32 desired, u32 fallback)
+{
+ if (desired & fallback & domain)
+ return 0;
+
+ if (desired & domain)
+ return TTM_PL_FLAG_DESIRED;
+
+ return TTM_PL_FLAG_FALLBACK;
+}
+
static u32
-set_placement_list(struct ttm_place *pl, u32 domain)
+set_placement_list(struct ttm_place *pl, u32 desired, u32 fallback)
{
+ u32 domain = desired | fallback;
u32 n = 0;
/*
@@ -752,35 +764,40 @@ set_placement_list(struct ttm_place *pl, u32 domain)
*/
if (domain & VMW_BO_DOMAIN_MOB) {
pl[n].mem_type = VMW_PL_MOB;
- pl[n].flags = 0;
+ pl[n].flags = placement_flags(VMW_BO_DOMAIN_MOB, desired,
+ fallback);
pl[n].fpfn = 0;
pl[n].lpfn = 0;
n++;
}
if (domain & VMW_BO_DOMAIN_GMR) {
pl[n].mem_type = VMW_PL_GMR;
- pl[n].flags = 0;
+ pl[n].flags = placement_flags(VMW_BO_DOMAIN_GMR, desired,
+ fallback);
pl[n].fpfn = 0;
pl[n].lpfn = 0;
n++;
}
if (domain & VMW_BO_DOMAIN_VRAM) {
pl[n].mem_type = TTM_PL_VRAM;
- pl[n].flags = 0;
+ pl[n].flags = placement_flags(VMW_BO_DOMAIN_VRAM, desired,
+ fallback);
pl[n].fpfn = 0;
pl[n].lpfn = 0;
n++;
}
if (domain & VMW_BO_DOMAIN_WAITABLE_SYS) {
pl[n].mem_type = VMW_PL_SYSTEM;
- pl[n].flags = 0;
+ pl[n].flags = placement_flags(VMW_BO_DOMAIN_WAITABLE_SYS,
+ desired, fallback);
pl[n].fpfn = 0;
pl[n].lpfn = 0;
n++;
}
if (domain & VMW_BO_DOMAIN_SYS) {
pl[n].mem_type = TTM_PL_SYSTEM;
- pl[n].flags = 0;
+ pl[n].flags = placement_flags(VMW_BO_DOMAIN_SYS, desired,
+ fallback);
pl[n].fpfn = 0;
pl[n].lpfn = 0;
n++;
@@ -806,7 +823,7 @@ void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32
busy_domain)
u32 i;
pl->placement = bo->places;
- pl->num_placement = set_placement_list(bo->places, domain);
+ pl->num_placement = set_placement_list(bo->places, domain, busy_domain);
if (drm_debug_enabled(DRM_UT_DRIVER) && bo->tbo.resource) {
for (i = 0; i < pl->num_placement; ++i) {
@@ -821,8 +838,6 @@ 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 a84fffcef8e1..4d23d0a70bcb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -46,15 +46,11 @@ static const struct ttm_place sys_placement_flags = {
struct ttm_placement vmw_vram_placement = {
.num_placement = 1,
.placement = &vram_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &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
};
const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt);
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 8e4a3b1f6b93..1e5edc7f0b85 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -38,22 +38,26 @@ static const struct ttm_place sys_placement_flags = {
static struct ttm_placement sys_placement = {
.num_placement = 1,
.placement = &sys_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &sys_placement_flags,
};
-static const struct ttm_place tt_placement_flags = {
- .fpfn = 0,
- .lpfn = 0,
- .mem_type = XE_PL_TT,
- .flags = 0,
+static const struct ttm_place tt_placement_flags[] = {
+ {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = XE_PL_TT,
+ .flags = TTM_PL_FLAG_DESIRED,
+ },
+ {
+ .fpfn = 0,
+ .lpfn = 0,
+ .mem_type = XE_PL_SYSTEM,
+ .flags = TTM_PL_FLAG_FALLBACK,
+ }
};
static struct ttm_placement tt_placement = {
- .num_placement = 1,
- .placement = &tt_placement_flags,
- .num_busy_placement = 1,
- .busy_placement = &sys_placement_flags,
+ .num_placement = 2,
+ .placement = tt_placement_flags,
};
bool mem_type_is_vram(u32 mem_type)
@@ -230,8 +234,6 @@ static int __xe_bo_placement_for_flags(struct xe_device *xe,
struct xe_bo *bo,
bo->placement = (struct ttm_placement) {
.num_placement = c,
.placement = bo->placements,
- .num_busy_placement = c,
- .busy_placement = bo->placements,
};
return 0;
@@ -251,7 +253,6 @@ static void xe_evict_flags(struct ttm_buffer_object *tbo,
/* Don't handle scatter gather BOs */
if (tbo->type == ttm_bo_type_sg) {
placement->num_placement = 0;
- placement->num_busy_placement = 0;
return;
}
@@ -1353,8 +1354,6 @@ static int __xe_bo_fixed_placement(struct xe_device *xe,
bo->placement = (struct ttm_placement) {
.num_placement = 1,
.placement = place,
- .num_busy_placement = 1,
- .busy_placement = place,
};
return 0;
@@ -2112,9 +2111,7 @@ int xe_bo_migrate(struct xe_bo *bo, u32 mem_type)
xe_place_from_ttm_type(mem_type, &requested);
placement.num_placement = 1;
- placement.num_busy_placement = 1;
placement.placement = &requested;
- placement.busy_placement = &requested;
/*
* Stolen needs to be handled like below VRAM handling if we ever need
diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h
index 8074d0f6cae5..b510a4812609 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_DESIRED (1 << 3)
+
+/* Placement is only used during eviction */
+#define TTM_PL_FLAG_FALLBACK (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
Previously we would never try to move a BO into the preferred placements
when it ever landed in a busy placement since those were considered
compatible.
Rework the whole handling and finally unify the idle and busy handling.
ttm_bo_validate() is now responsible to try idle placement first and then
use the busy placement if that didn't worked.
Drawback is that we now always try the idle placement first for each
validation which might cause some additional CPU overhead on overcommit.
v2: fix kerneldoc warning and coding style
v3: take care of XE as well
Signed-off-by: Christian K?nig <christian.koenig at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
drivers/gpu/drm/ttm/ttm_bo.c | 131 ++++++++-------------
drivers/gpu/drm/ttm/ttm_resource.c | 16 ++-
drivers/gpu/drm/xe/xe_bo.c | 4 +-
include/drm/ttm/ttm_bo.h | 3 +-
include/drm/ttm/ttm_resource.h | 3 +-
7 files changed, 68 insertions(+), 93 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b671b0665492..06fb3fc47eaa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -404,7 +404,7 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
(*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT;
}
r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement,
- &(*bo_ptr)->tbo.resource, &ctx);
+ &(*bo_ptr)->tbo.resource, &ctx, false);
if (r)
goto error;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8722beba494e..f23cdc7c5b08 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -966,7 +966,7 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
placements.mem_type = TTM_PL_TT;
placements.flags = bo->resource->placement;
- r = ttm_bo_mem_space(bo, &placement, &tmp, &ctx);
+ r = ttm_bo_mem_space(bo, &placement, &tmp, &ctx, true);
if (unlikely(r))
return r;
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index a5e11a92e0b9..3783be24d832 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -414,7 +414,7 @@ static int ttm_bo_bounce_temp_buffer(struct
ttm_buffer_object *bo,
hop_placement.placement = hop;
/* find space in the bounce domain */
- ret = ttm_bo_mem_space(bo, &hop_placement, &hop_mem, ctx);
+ ret = ttm_bo_mem_space(bo, &hop_placement, &hop_mem, ctx, true);
if (ret)
return ret;
/* move to the bounce domain */
@@ -454,7 +454,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo,
return ttm_bo_pipeline_gutting(bo);
}
- ret = ttm_bo_mem_space(bo, &placement, &evict_mem, ctx);
+ ret = ttm_bo_mem_space(bo, &placement, &evict_mem, ctx, true);
if (ret) {
if (ret != -ERESTARTSYS) {
pr_err("Failed to find memory space for buffer 0x%p eviction\n",
@@ -724,37 +724,6 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object
*bo,
return ret;
}
-/*
- * Repeatedly evict memory from the LRU for @mem_type until we create enough
- * space, or we've evicted everything and there isn't enough space.
- */
-static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
- const struct ttm_place *place,
- struct ttm_resource **mem,
- struct ttm_operation_ctx *ctx)
-{
- struct ttm_device *bdev = bo->bdev;
- struct ttm_resource_manager *man;
- struct ww_acquire_ctx *ticket;
- int ret;
-
- man = ttm_manager_type(bdev, place->mem_type);
- ticket = dma_resv_locking_ctx(bo->base.resv);
- do {
- ret = ttm_resource_alloc(bo, place, mem);
- if (likely(!ret))
- break;
- if (unlikely(ret != -ENOSPC))
- return ret;
- ret = ttm_mem_evict_first(bdev, man, place, ctx,
- ticket);
- if (unlikely(ret != 0))
- return ret;
- } while (1);
-
- return ttm_bo_add_move_fence(bo, man, *mem, ctx->no_wait_gpu);
-}
-
/**
* ttm_bo_mem_space
*
@@ -763,6 +732,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object
*bo,
* @placement: Proposed new placement for the buffer object.
* @mem: A struct ttm_resource.
* @ctx: if and how to sleep, lock buffers and alloc memory
+ * @force_space: If we should evict buffers to force space
*
* Allocate memory space for the buffer object pointed to by @bo, using
* the placement flags in @placement, potentially evicting other idle buffer
objects.
@@ -776,12 +746,14 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object
*bo,
int ttm_bo_mem_space(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
struct ttm_resource **mem,
- struct ttm_operation_ctx *ctx)
+ struct ttm_operation_ctx *ctx,
+ bool force_space)
{
struct ttm_device *bdev = bo->bdev;
- bool type_found = false;
+ struct ww_acquire_ctx *ticket;
int i, ret;
+ ticket = dma_resv_locking_ctx(bo->base.resv);
ret = dma_resv_reserve_fences(bo->base.resv, 1);
if (unlikely(ret))
return ret;
@@ -790,19 +762,30 @@ 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_FALLBACK)
- continue;
-
man = ttm_manager_type(bdev, place->mem_type);
if (!man || !ttm_resource_manager_used(man))
continue;
- type_found = true;
- ret = ttm_resource_alloc(bo, place, mem);
- if (ret == -ENOSPC)
+ if (place->flags & (force_space ? TTM_PL_FLAG_DESIRED :
+ TTM_PL_FLAG_FALLBACK))
+ continue;
+
+ do {
+ ret = ttm_resource_alloc(bo, place, mem);
+ if (unlikely(ret != -ENOSPC))
+ return ret;
+ if (likely(!ret) || !force_space)
+ break;
+
+ ret = ttm_mem_evict_first(bdev, man, place, ctx,
+ ticket);
+ if (unlikely(ret == -EBUSY))
+ break;
+ if (unlikely(ret))
+ return ret;
+ } while (1);
+ if (ret)
continue;
- if (unlikely(ret))
- goto error;
ret = ttm_bo_add_move_fence(bo, man, *mem, ctx->no_wait_gpu);
if (unlikely(ret)) {
@@ -810,45 +793,19 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
if (ret == -EBUSY)
continue;
- goto error;
+ return ret;
}
return 0;
}
- 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_DESIRED)
- continue;
-
- man = ttm_manager_type(bdev, place->mem_type);
- if (!man || !ttm_resource_manager_used(man))
- continue;
-
- type_found = true;
- ret = ttm_bo_mem_force_space(bo, place, mem, ctx);
- if (likely(!ret))
- return 0;
-
- if (ret && ret != -EBUSY)
- goto error;
- }
-
- ret = -ENOSPC;
- if (!type_found) {
- pr_err(TTM_PFX "No compatible memory type found\n");
- ret = -EINVAL;
- }
-
-error:
- return ret;
+ return -ENOSPC;
}
EXPORT_SYMBOL(ttm_bo_mem_space);
static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
- struct ttm_operation_ctx *ctx)
+ struct ttm_operation_ctx *ctx,
+ bool force_space)
{
struct ttm_resource *mem;
struct ttm_place hop;
@@ -865,7 +822,7 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
* stop and the driver will be called to make
* the second hop.
*/
- ret = ttm_bo_mem_space(bo, placement, &mem, ctx);
+ ret = ttm_bo_mem_space(bo, placement, &mem, ctx, force_space);
if (ret)
return ret;
bounce:
@@ -902,6 +859,7 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
struct ttm_operation_ctx *ctx)
{
+ bool force_space;
int ret;
dma_resv_assert_held(bo->base.resv);
@@ -912,20 +870,27 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
if (!placement->num_placement)
return ttm_bo_pipeline_gutting(bo);
- /* Check whether we need to move buffer. */
- if (bo->resource && ttm_resource_compatible(bo->resource,
placement))
- return 0;
+ force_space = false;
+ do {
+ /* Check whether we need to move buffer. */
+ if (bo->resource &&
+ ttm_resource_compatible(bo->resource, placement,
+ force_space))
+ return 0;
+
+ /* Moving of pinned BOs is forbidden */
+ if (bo->pin_count)
+ return -EINVAL;
- /* Moving of pinned BOs is forbidden */
- if (bo->pin_count)
- return -EINVAL;
+ ret = ttm_bo_move_buffer(bo, placement, ctx, force_space);
+ if (ret && ret != -ENOSPC)
+ return ret;
- ret = ttm_bo_move_buffer(bo, placement, ctx);
+ force_space = !force_space;
+ } while (force_space);
/* For backward compatibility with userspace */
if (ret == -ENOSPC)
return -ENOMEM;
- if (ret)
- return ret;
/*
* We might need to add a TTM.
diff --git a/drivers/gpu/drm/ttm/ttm_resource.c
b/drivers/gpu/drm/ttm/ttm_resource.c
index fb14f7716cf8..65155f2013ca 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -295,11 +295,13 @@ bool ttm_resource_intersects(struct ttm_device *bdev,
*
* @res: the resource to check
* @placement: the placement to check against
+ * @evicting: true if the caller is doing evictions
*
* Returns true if the placement is compatible.
*/
bool ttm_resource_compatible(struct ttm_resource *res,
- struct ttm_placement *placement)
+ struct ttm_placement *placement,
+ bool evicting)
{
struct ttm_buffer_object *bo = res->bo;
struct ttm_device *bdev = bo->bdev;
@@ -315,14 +317,20 @@ bool ttm_resource_compatible(struct ttm_resource *res,
if (res->mem_type != place->mem_type)
continue;
+ if (place->flags & (evicting ? TTM_PL_FLAG_DESIRED :
+ TTM_PL_FLAG_FALLBACK))
+ continue;
+
+ if (place->flags & TTM_PL_FLAG_CONTIGUOUS &&
+ !(res->placement & TTM_PL_FLAG_CONTIGUOUS))
+ continue;
+
man = ttm_manager_type(bdev, res->mem_type);
if (man->func->compatible &&
!man->func->compatible(man, res, place, bo->base.size))
continue;
- if ((!(place->flags & TTM_PL_FLAG_CONTIGUOUS) ||
- (res->placement & TTM_PL_FLAG_CONTIGUOUS)))
- return true;
+ return true;
}
return false;
}
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 1e5edc7f0b85..d4b8bd774ada 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -828,7 +828,7 @@ int xe_bo_evict_pinned(struct xe_bo *bo)
if (WARN_ON(!xe_bo_is_vram(bo)))
return -EINVAL;
- ret = ttm_bo_mem_space(&bo->ttm, &placement, &new_mem,
&ctx);
+ ret = ttm_bo_mem_space(&bo->ttm, &placement, &new_mem,
&ctx, false);
if (ret)
return ret;
@@ -893,7 +893,7 @@ int xe_bo_restore_pinned(struct xe_bo *bo)
if (WARN_ON(xe_bo_is_vram(bo) || !bo->ttm.ttm))
return -EINVAL;
- ret = ttm_bo_mem_space(&bo->ttm, &bo->placement, &new_mem,
&ctx);
+ ret = ttm_bo_mem_space(&bo->ttm, &bo->placement, &new_mem,
&ctx, false);
if (ret)
return ret;
diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h
index 0223a41a64b2..64d738f152d1 100644
--- a/include/drm/ttm/ttm_bo.h
+++ b/include/drm/ttm/ttm_bo.h
@@ -397,7 +397,8 @@ vm_fault_t ttm_bo_vm_dummy_page(struct vm_fault *vmf,
pgprot_t prot);
int ttm_bo_mem_space(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
struct ttm_resource **mem,
- struct ttm_operation_ctx *ctx);
+ struct ttm_operation_ctx *ctx,
+ bool force_space);
void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo);
/*
diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
index 1afa13f0c22b..7561023db43d 100644
--- a/include/drm/ttm/ttm_resource.h
+++ b/include/drm/ttm/ttm_resource.h
@@ -366,7 +366,8 @@ bool ttm_resource_intersects(struct ttm_device *bdev,
const struct ttm_place *place,
size_t size);
bool ttm_resource_compatible(struct ttm_resource *res,
- struct ttm_placement *placement);
+ struct ttm_placement *placement,
+ bool evicting);
void ttm_resource_set_bo(struct ttm_resource *res,
struct ttm_buffer_object *bo);
--
2.34.1
Christian König
2024-Jan-12 12:51 UTC
[PATCH 5/5] 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 06fb3fc47eaa..2752f2a67a44 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 & abo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM) + places[c].flags |= TTM_PL_FLAG_FALLBACK; c++; } -- 2.34.1
Am 12.01.24 um 13:51 schrieb Christian K?nig:> Hi guys,just a gentle ping on this. Zack any more comments for the VMWGFX parts? Thanks, Christian.> > same as the last time. Things I've changed: > > Implemented the requirements from Zack to correctly fill in the busy > placements for VMWGFX. > > Renamed the placement flags to desired and fallback as suggested by > Michel. > > Rebased on drm-tip instead of drm-misc-next and fixed XE as well. > > Please review and comment, > Christian. > >