[PATCH 1/9] drm/amdgpu: Rename kfd_bo_va_list to kfd_mem_attachment
Felix Kuehling
Felix.Kuehling at amd.com
Wed Apr 14 06:46:13 UTC 2021
This name is more fitting, especially for the changes coming next to
support multi-GPU systems with proper DMA mappings. Cleaned up the code
and renamed some related functions and variables to improve readability.
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 8 +-
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 209 +++++++++---------
2 files changed, 104 insertions(+), 113 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 14f68c028126..910c50956e16 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -38,10 +38,10 @@ extern uint64_t amdgpu_amdkfd_total_mem_size;
struct amdgpu_device;
-struct kfd_bo_va_list {
- struct list_head bo_list;
+struct kfd_mem_attachment {
+ struct list_head list;
struct amdgpu_bo_va *bo_va;
- void *kgd_dev;
+ struct amdgpu_device *adev;
bool is_mapped;
uint64_t va;
uint64_t pte_flags;
@@ -50,7 +50,7 @@ struct kfd_bo_va_list {
struct kgd_mem {
struct mutex lock;
struct amdgpu_bo *bo;
- struct list_head bo_va_list;
+ struct list_head attachments;
/* protected by amdkfd_process_info.lock */
struct ttm_validate_buffer validate_list;
struct ttm_validate_buffer resv_list;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 6622695a5eed..d021152314ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -75,16 +75,16 @@ static inline struct amdgpu_device *get_amdgpu_device(struct kgd_dev *kgd)
return (struct amdgpu_device *)kgd;
}
-static bool check_if_add_bo_to_vm(struct amdgpu_vm *avm,
+static bool kfd_mem_is_attached(struct amdgpu_vm *avm,
struct kgd_mem *mem)
{
- struct kfd_bo_va_list *entry;
+ struct kfd_mem_attachment *entry;
- list_for_each_entry(entry, &mem->bo_va_list, bo_list)
+ list_for_each_entry(entry, &mem->attachments, list)
if (entry->bo_va->base.vm == avm)
- return false;
+ return true;
- return true;
+ return false;
}
/* Set memory usage limits. Current, limits are
@@ -471,7 +471,7 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem)
return pte_flags;
}
-/* add_bo_to_vm - Add a BO to a VM
+/* kfd_mem_attach - Add a BO to a VM
*
* Everything that needs to bo done only once when a BO is first added
* to a VM. It can later be mapped and unmapped many times without
@@ -483,15 +483,14 @@ static uint64_t get_pte_flags(struct amdgpu_device *adev, struct kgd_mem *mem)
* 4. Alloc page tables and directories if needed
* 4a. Validate new page tables and directories
*/
-static int add_bo_to_vm(struct amdgpu_device *adev, struct kgd_mem *mem,
+static int kfd_mem_attach(struct amdgpu_device *adev, struct kgd_mem *mem,
struct amdgpu_vm *vm, bool is_aql,
- struct kfd_bo_va_list **p_bo_va_entry)
+ struct kfd_mem_attachment **p_attachment)
{
int ret;
- struct kfd_bo_va_list *bo_va_entry;
+ struct kfd_mem_attachment *attachment;
struct amdgpu_bo *bo = mem->bo;
uint64_t va = mem->va;
- struct list_head *list_bo_va = &mem->bo_va_list;
unsigned long bo_size = bo->tbo.base.size;
if (!va) {
@@ -502,29 +501,29 @@ static int add_bo_to_vm(struct amdgpu_device *adev, struct kgd_mem *mem,
if (is_aql)
va += bo_size;
- bo_va_entry = kzalloc(sizeof(*bo_va_entry), GFP_KERNEL);
- if (!bo_va_entry)
+ attachment = kzalloc(sizeof(*attachment), GFP_KERNEL);
+ if (!attachment)
return -ENOMEM;
pr_debug("\t add VA 0x%llx - 0x%llx to vm %p\n", va,
va + bo_size, vm);
/* Add BO to VM internal data structures*/
- bo_va_entry->bo_va = amdgpu_vm_bo_add(adev, vm, bo);
- if (!bo_va_entry->bo_va) {
+ attachment->bo_va = amdgpu_vm_bo_add(adev, vm, bo);
+ if (!attachment->bo_va) {
ret = -EINVAL;
pr_err("Failed to add BO object to VM. ret == %d\n",
ret);
goto err_vmadd;
}
- bo_va_entry->va = va;
- bo_va_entry->pte_flags = get_pte_flags(adev, mem);
- bo_va_entry->kgd_dev = (void *)adev;
- list_add(&bo_va_entry->bo_list, list_bo_va);
+ attachment->va = va;
+ attachment->pte_flags = get_pte_flags(adev, mem);
+ attachment->adev = adev;
+ list_add(&attachment->list, &mem->attachments);
- if (p_bo_va_entry)
- *p_bo_va_entry = bo_va_entry;
+ if (p_attachment)
+ *p_attachment = attachment;
/* Allocate validate page tables if needed */
ret = vm_validate_pt_pd_bos(vm);
@@ -536,22 +535,20 @@ static int add_bo_to_vm(struct amdgpu_device *adev, struct kgd_mem *mem,
return 0;
err_alloc_pts:
- amdgpu_vm_bo_rmv(adev, bo_va_entry->bo_va);
- list_del(&bo_va_entry->bo_list);
+ amdgpu_vm_bo_rmv(adev, attachment->bo_va);
+ list_del(&attachment->list);
err_vmadd:
- kfree(bo_va_entry);
+ kfree(attachment);
return ret;
}
-static void remove_bo_from_vm(struct amdgpu_device *adev,
- struct kfd_bo_va_list *entry, unsigned long size)
+static void kfd_mem_detach(struct kfd_mem_attachment *attachment)
{
- pr_debug("\t remove VA 0x%llx - 0x%llx in entry %p\n",
- entry->va,
- entry->va + size, entry);
- amdgpu_vm_bo_rmv(adev, entry->bo_va);
- list_del(&entry->bo_list);
- kfree(entry);
+ pr_debug("\t remove VA 0x%llx in entry %p\n",
+ attachment->va, attachment);
+ amdgpu_vm_bo_rmv(attachment->adev, attachment->bo_va);
+ list_del(&attachment->list);
+ kfree(attachment);
}
static void add_kgd_mem_to_kfd_bo_list(struct kgd_mem *mem,
@@ -726,7 +723,7 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
struct bo_vm_reservation_context *ctx)
{
struct amdgpu_bo *bo = mem->bo;
- struct kfd_bo_va_list *entry;
+ struct kfd_mem_attachment *entry;
unsigned int i;
int ret;
@@ -738,7 +735,7 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
INIT_LIST_HEAD(&ctx->list);
INIT_LIST_HEAD(&ctx->duplicates);
- list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
+ list_for_each_entry(entry, &mem->attachments, list) {
if ((vm && vm != entry->bo_va->base.vm) ||
(entry->is_mapped != map_type
&& map_type != BO_VM_ALL))
@@ -760,7 +757,7 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
list_add(&ctx->kfd_bo.tv.head, &ctx->list);
i = 0;
- list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
+ list_for_each_entry(entry, &mem->attachments, list) {
if ((vm && vm != entry->bo_va->base.vm) ||
(entry->is_mapped != map_type
&& map_type != BO_VM_ALL))
@@ -815,7 +812,7 @@ static int unreserve_bo_and_vms(struct bo_vm_reservation_context *ctx,
}
static int unmap_bo_from_gpuvm(struct amdgpu_device *adev,
- struct kfd_bo_va_list *entry,
+ struct kfd_mem_attachment *entry,
struct amdgpu_sync *sync)
{
struct amdgpu_bo_va *bo_va = entry->bo_va;
@@ -831,7 +828,7 @@ static int unmap_bo_from_gpuvm(struct amdgpu_device *adev,
}
static int update_gpuvm_pte(struct amdgpu_device *adev,
- struct kfd_bo_va_list *entry,
+ struct kfd_mem_attachment *entry,
struct amdgpu_sync *sync)
{
int ret;
@@ -848,7 +845,7 @@ static int update_gpuvm_pte(struct amdgpu_device *adev,
}
static int map_bo_to_gpuvm(struct amdgpu_device *adev,
- struct kfd_bo_va_list *entry, struct amdgpu_sync *sync,
+ struct kfd_mem_attachment *entry, struct amdgpu_sync *sync,
bool no_update_pte)
{
int ret;
@@ -1235,7 +1232,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
ret = -ENOMEM;
goto err;
}
- INIT_LIST_HEAD(&(*mem)->bo_va_list);
+ INIT_LIST_HEAD(&(*mem)->attachments);
mutex_init(&(*mem)->lock);
(*mem)->aql_queue = !!(flags & KFD_IOC_ALLOC_MEM_FLAGS_AQL_QUEUE_MEM);
@@ -1316,7 +1313,7 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
{
struct amdkfd_process_info *process_info = mem->process_info;
unsigned long bo_size = mem->bo->tbo.base.size;
- struct kfd_bo_va_list *entry, *tmp;
+ struct kfd_mem_attachment *entry, *tmp;
struct bo_vm_reservation_context ctx;
struct ttm_validate_buffer *bo_list_entry;
unsigned int mapped_to_gpu_memory;
@@ -1360,9 +1357,8 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
mem->va + bo_size * (1 + mem->aql_queue));
/* Remove from VM internal data structures */
- list_for_each_entry_safe(entry, tmp, &mem->bo_va_list, bo_list)
- remove_bo_from_vm((struct amdgpu_device *)entry->kgd_dev,
- entry, bo_size);
+ list_for_each_entry_safe(entry, tmp, &mem->attachments, list)
+ kfd_mem_detach(entry);
ret = unreserve_bo_and_vms(&ctx, false, false);
@@ -1404,10 +1400,10 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
int ret;
struct amdgpu_bo *bo;
uint32_t domain;
- struct kfd_bo_va_list *entry;
+ struct kfd_mem_attachment *entry;
struct bo_vm_reservation_context ctx;
- struct kfd_bo_va_list *bo_va_entry = NULL;
- struct kfd_bo_va_list *bo_va_entry_aql = NULL;
+ struct kfd_mem_attachment *attachment = NULL;
+ struct kfd_mem_attachment *attachment_aql = NULL;
unsigned long bo_size;
bool is_invalid_userptr = false;
@@ -1456,21 +1452,20 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
bo->tbo.mem.mem_type == TTM_PL_SYSTEM)
is_invalid_userptr = true;
- if (check_if_add_bo_to_vm(avm, mem)) {
- ret = add_bo_to_vm(adev, mem, avm, false,
- &bo_va_entry);
+ if (!kfd_mem_is_attached(avm, mem)) {
+ ret = kfd_mem_attach(adev, mem, avm, false, &attachment);
if (ret)
- goto add_bo_to_vm_failed;
+ goto attach_failed;
if (mem->aql_queue) {
- ret = add_bo_to_vm(adev, mem, avm,
- true, &bo_va_entry_aql);
+ ret = kfd_mem_attach(adev, mem, avm, true,
+ &attachment_aql);
if (ret)
- goto add_bo_to_vm_failed_aql;
+ goto attach_failed_aql;
}
} else {
ret = vm_validate_pt_pd_bos(avm);
if (unlikely(ret))
- goto add_bo_to_vm_failed;
+ goto attach_failed;
}
if (mem->mapped_to_gpu_memory == 0 &&
@@ -1486,30 +1481,30 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
}
}
- list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
- if (entry->bo_va->base.vm == vm && !entry->is_mapped) {
- pr_debug("\t map VA 0x%llx - 0x%llx in entry %p\n",
- entry->va, entry->va + bo_size,
- entry);
+ list_for_each_entry(entry, &mem->attachments, list) {
+ if (entry->bo_va->base.vm != vm || entry->is_mapped)
+ continue;
- ret = map_bo_to_gpuvm(adev, entry, ctx.sync,
- is_invalid_userptr);
- if (ret) {
- pr_err("Failed to map bo to gpuvm\n");
- goto map_bo_to_gpuvm_failed;
- }
+ pr_debug("\t map VA 0x%llx - 0x%llx in entry %p\n",
+ entry->va, entry->va + bo_size, entry);
- ret = vm_update_pds(vm, ctx.sync);
- if (ret) {
- pr_err("Failed to update page directories\n");
- goto map_bo_to_gpuvm_failed;
- }
+ ret = map_bo_to_gpuvm(adev, entry, ctx.sync,
+ is_invalid_userptr);
+ if (ret) {
+ pr_err("Failed to map bo to gpuvm\n");
+ goto map_bo_to_gpuvm_failed;
+ }
- entry->is_mapped = true;
- mem->mapped_to_gpu_memory++;
- pr_debug("\t INC mapping count %d\n",
- mem->mapped_to_gpu_memory);
+ ret = vm_update_pds(vm, ctx.sync);
+ if (ret) {
+ pr_err("Failed to update page directories\n");
+ goto map_bo_to_gpuvm_failed;
}
+
+ entry->is_mapped = true;
+ mem->mapped_to_gpu_memory++;
+ pr_debug("\t INC mapping count %d\n",
+ mem->mapped_to_gpu_memory);
}
if (!amdgpu_ttm_tt_get_usermm(bo->tbo.ttm) && !bo->tbo.pin_count)
@@ -1521,12 +1516,12 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
goto out;
map_bo_to_gpuvm_failed:
- if (bo_va_entry_aql)
- remove_bo_from_vm(adev, bo_va_entry_aql, bo_size);
-add_bo_to_vm_failed_aql:
- if (bo_va_entry)
- remove_bo_from_vm(adev, bo_va_entry, bo_size);
-add_bo_to_vm_failed:
+ if (attachment_aql)
+ kfd_mem_detach(attachment_aql);
+attach_failed_aql:
+ if (attachment)
+ kfd_mem_detach(attachment);
+attach_failed:
unreserve_bo_and_vms(&ctx, false, false);
out:
mutex_unlock(&mem->process_info->lock);
@@ -1541,7 +1536,7 @@ int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
struct amdkfd_process_info *process_info =
((struct amdgpu_vm *)vm)->process_info;
unsigned long bo_size = mem->bo->tbo.base.size;
- struct kfd_bo_va_list *entry;
+ struct kfd_mem_attachment *entry;
struct bo_vm_reservation_context ctx;
int ret;
@@ -1565,26 +1560,24 @@ int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
mem->va + bo_size * (1 + mem->aql_queue),
vm);
- list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
- if (entry->bo_va->base.vm == vm && entry->is_mapped) {
- pr_debug("\t unmap VA 0x%llx - 0x%llx from entry %p\n",
- entry->va,
- entry->va + bo_size,
- entry);
+ list_for_each_entry(entry, &mem->attachments, list) {
+ if (entry->bo_va->base.vm != vm || !entry->is_mapped)
+ continue;
- ret = unmap_bo_from_gpuvm(adev, entry, ctx.sync);
- if (ret == 0) {
- entry->is_mapped = false;
- } else {
- pr_err("failed to unmap VA 0x%llx\n",
- mem->va);
- goto unreserve_out;
- }
+ pr_debug("\t unmap VA 0x%llx - 0x%llx from entry %p\n",
+ entry->va, entry->va + bo_size, entry);
- mem->mapped_to_gpu_memory--;
- pr_debug("\t DEC mapping count %d\n",
- mem->mapped_to_gpu_memory);
+ ret = unmap_bo_from_gpuvm(adev, entry, ctx.sync);
+ if (ret == 0) {
+ entry->is_mapped = false;
+ } else {
+ pr_err("failed to unmap VA 0x%llx\n", mem->va);
+ goto unreserve_out;
}
+
+ mem->mapped_to_gpu_memory--;
+ pr_debug("\t DEC mapping count %d\n",
+ mem->mapped_to_gpu_memory);
}
/* If BO is unmapped from all VMs, unfence it. It can be evicted if
@@ -1726,7 +1719,7 @@ int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
if (mmap_offset)
*mmap_offset = amdgpu_bo_mmap_offset(bo);
- INIT_LIST_HEAD(&(*mem)->bo_va_list);
+ INIT_LIST_HEAD(&(*mem)->attachments);
mutex_init(&(*mem)->lock);
(*mem)->alloc_flags =
@@ -1923,7 +1916,7 @@ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info)
list_for_each_entry_safe(mem, tmp_mem,
&process_info->userptr_inval_list,
validate_list.head) {
- struct kfd_bo_va_list *bo_va_entry;
+ struct kfd_mem_attachment *attachment;
bo = mem->bo;
@@ -1946,13 +1939,13 @@ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info)
* VM faults if the GPU tries to access the invalid
* memory.
*/
- list_for_each_entry(bo_va_entry, &mem->bo_va_list, bo_list) {
- if (!bo_va_entry->is_mapped)
+ list_for_each_entry(attachment, &mem->attachments, list) {
+ if (!attachment->is_mapped)
continue;
ret = update_gpuvm_pte((struct amdgpu_device *)
- bo_va_entry->kgd_dev,
- bo_va_entry, &sync);
+ attachment->adev,
+ attachment, &sync);
if (ret) {
pr_err("%s: update PTE failed\n", __func__);
/* make sure this gets validated again */
@@ -2133,7 +2126,7 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
struct amdgpu_bo *bo = mem->bo;
uint32_t domain = mem->domain;
- struct kfd_bo_va_list *bo_va_entry;
+ struct kfd_mem_attachment *attachment;
total_size += amdgpu_bo_size(bo);
@@ -2153,11 +2146,9 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
pr_debug("Memory eviction: Sync BO fence failed. Try again\n");
goto validate_map_fail;
}
- list_for_each_entry(bo_va_entry, &mem->bo_va_list,
- bo_list) {
+ list_for_each_entry(attachment, &mem->attachments, list) {
ret = update_gpuvm_pte((struct amdgpu_device *)
- bo_va_entry->kgd_dev,
- bo_va_entry,
+ attachment->adev, attachment,
&sync_obj);
if (ret) {
pr_debug("Memory eviction: update PTE failed. Try again\n");
@@ -2232,7 +2223,7 @@ int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem
return -ENOMEM;
mutex_init(&(*mem)->lock);
- INIT_LIST_HEAD(&(*mem)->bo_va_list);
+ INIT_LIST_HEAD(&(*mem)->attachments);
(*mem)->bo = amdgpu_bo_ref(gws_bo);
(*mem)->domain = AMDGPU_GEM_DOMAIN_GWS;
(*mem)->process_info = process_info;
--
2.31.1
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