Hi guys, I'm trying to make this functionality a bit more useful for years now since we multiple reports that behavior of drivers can be suboptimal when multiple placements be given. So basically instead of hacking around the TTM behavior in the driver once more I've gone ahead and changed the idle/busy placement list into idle/busy placement flags. This not only saves a bunch of code, but also allows setting some placements as fallback which are used if allocating from the preferred ones didn't worked. Zack pointed out that some removed VMWGFX code was brought back because of rebasing, fixed in this version. Intel CI seems to be happy with those patches, so any more comments? Regards, Christian.
Christian König
2024-Jan-09 07:47 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-09 07:47 UTC
[PATCH 2/5] drm/ttm: return ENOSPC from ttm_bo_mem_space
Only convert it to ENOMEM in ttm_bo_validate.
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-09 07:47 UTC
[PATCH 3/5] drm/ttm: replace busy placement with flags v5
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
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 | 2 -
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 4 --
include/drm/ttm/ttm_placement.h | 10 +--
include/drm/ttm/ttm_resource.h | 8 +--
18 files changed, 79 insertions(+), 172 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..575875b6e47e 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;
+ 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_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 8c1eaa74fa21..aa12bd5cfd17 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 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..7d7b33fcb5cf 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -821,8 +821,6 @@ 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/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
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
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 | 15 ++-
include/drm/ttm/ttm_bo.h | 3 +-
include/drm/ttm/ttm_resource.h | 3 +-
6 files changed, 65 insertions(+), 91 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index aa0dd6dad068..f110dfdc4feb 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 9a6a00b1af40..00da9a81cf6c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -967,7 +967,7 @@ 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 aa12bd5cfd17..17bfc252f76d 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_BUSY)
- 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_IDLE :
+ TTM_PL_FLAG_BUSY))
+ 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_IDLE)
- 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..67052891314c 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
+ * @busy: controls which places to check
*
* Returns true if the placement is compatible.
*/
bool ttm_resource_compatible(struct ttm_resource *res,
- struct ttm_placement *placement)
+ struct ttm_placement *placement,
+ bool busy)
{
struct ttm_buffer_object *bo = res->bo;
struct ttm_device *bdev = bo->bdev;
@@ -315,14 +317,19 @@ bool ttm_resource_compatible(struct ttm_resource *res,
if (res->mem_type != place->mem_type)
continue;
+ if (place->flags & (busy ? TTM_PL_FLAG_IDLE : TTM_PL_FLAG_BUSY))
+ 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/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..514858c49848 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 busy);
void ttm_resource_set_bo(struct ttm_resource *res,
struct ttm_buffer_object *bo);
--
2.34.1
Christian König
2024-Jan-09 07:47 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 f110dfdc4feb..979cecf18f17 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_BUSY; c++; } -- 2.34.1
Hi, Christian On Tue, 2024-01-09 at 08:47 +0100, Christian K?nig wrote:> Hi guys, > > I'm trying to make this functionality a bit more useful for years now > since we multiple reports that behavior of drivers can be suboptimal > when multiple placements be given. > > So basically instead of hacking around the TTM behavior in the driver > once more I've gone ahead and changed the idle/busy placement list > into idle/busy placement flags. This not only saves a bunch of code, > but also allows setting some placements as fallback which are used if > allocating from the preferred ones didn't worked. > > Zack pointed out that some removed VMWGFX code was brought back > because > of rebasing, fixed in this version. > > Intel CI seems to be happy with those patches, so any more comments?Looks like Xe changes are missing? (xe is now in drm-tip). I also have some doubts about the naming "idle" vs "busy", since an elaborate eviction mechanism would probably at some point want to check for gpu idle vs gpu busy, and this might create some confusion moving forward for people confusing busy as in memory overcommit with busy as in gpu activity. I can't immediately think of something better, though. /Thomas> > Regards, > Christian. > >