drm/amdgpu: keep the PTs validation list in the VM v2

This avoids allocating it on the fly.

v2: fix grammar in comment

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 40850af..d4e9272 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -917,8 +917,8 @@ struct amdgpu_ring {
 #define AMDGPU_VM_FAULT_STOP_ALWAYS    2
 
 struct amdgpu_vm_pt {
-       struct amdgpu_bo        *bo;
-       uint64_t                addr;
+       struct amdgpu_bo_list_entry     entry;
+       uint64_t                        addr;
 };
 
 struct amdgpu_vm_id {
@@ -983,8 +983,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm);
 void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
                         struct list_head *validated,
                         struct amdgpu_bo_list_entry *entry);
-struct amdgpu_bo_list_entry *amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm,
-                                                 struct list_head *duplicates);
+void amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm, struct list_head *duplicates);
 int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
                      struct amdgpu_sync *sync);
 void amdgpu_vm_flush(struct amdgpu_ring *ring,
@@ -1255,7 +1254,6 @@ struct amdgpu_cs_parser {
        struct amdgpu_cs_chunk  *chunks;
        /* relocations */
        struct amdgpu_bo_list_entry     vm_pd;
-       struct amdgpu_bo_list_entry     *vm_bos;
        struct list_head        validated;
        struct fence            *fence;
 

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 3fb21ec..6ce595f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -396,11 +396,7 @@ static int amdgpu_cs_parser_relocs(struct amdgpu_cs_parser *p)
        if (unlikely(r != 0))
                goto error_reserve;
 
-       p->vm_bos = amdgpu_vm_get_pt_bos(&fpriv->vm, &duplicates);
-       if (!p->vm_bos) {
-               r = -ENOMEM;
-               goto error_validate;
-       }
+       amdgpu_vm_get_pt_bos(&fpriv->vm, &duplicates);
 
        r = amdgpu_cs_list_validate(p->adev, &fpriv->vm, &p->validated);
        if (r)
@@ -483,7 +479,6 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bo
        if (parser->bo_list)
                amdgpu_bo_list_put(parser->bo_list);
 
-       drm_free_large(parser->vm_bos);
        for (i = 0; i < parser->nchunks; i++)
                drm_free_large(parser->chunks[i].kdata);
        kfree(parser->chunks);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index ea0fe94..8c5687e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -447,7 +447,6 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
                                    struct amdgpu_bo_va *bo_va, uint32_t operation)
 {
        struct ttm_validate_buffer tv, *entry;
-       struct amdgpu_bo_list_entry *vm_bos;
        struct amdgpu_bo_list_entry vm_pd;
        struct ww_acquire_ctx ticket;
        struct list_head list, duplicates;
@@ -468,12 +467,7 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
        if (r)
                goto error_print;
 
-       vm_bos = amdgpu_vm_get_pt_bos(bo_va->vm, &duplicates);
-       if (!vm_bos) {
-               r = -ENOMEM;
-               goto error_unreserve;
-       }
-
+       amdgpu_vm_get_pt_bos(bo_va->vm, &duplicates);
        list_for_each_entry(entry, &list, head) {
                domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type);
                /* if anything is swapped out don't swap it in here,
@@ -494,7 +488,6 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
 
 error_unreserve:
        ttm_eu_backoff_reservation(&ticket, &list);
-       drm_free_large(vm_bos);
 
 error_print:
        if (r && r != -ERESTARTSYS)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 592be64..e0fa9d9 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -98,40 +98,27 @@ void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
 }
 
 /**
- * amdgpu_vm_get_bos - add the vm BOs to a validation list
+ * amdgpu_vm_get_bos - add the vm BOs to a duplicates list
  *
  * @vm: vm providing the BOs
  * @duplicates: head of duplicates list
  *
- * Add the page directory to the list of BOs to
- * validate for command submission (cayman+).
+ * Add the page directory to the BO duplicates list
+ * for command submission.
  */
-struct amdgpu_bo_list_entry *amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm,
-                                                 struct list_head *duplicates)
+void amdgpu_vm_get_pt_bos(struct amdgpu_vm *vm, struct list_head *duplicates)
 {
-       struct amdgpu_bo_list_entry *list;
-       unsigned i, idx;
-
-       list = drm_malloc_ab(vm->max_pde_used + 1,
-                            sizeof(struct amdgpu_bo_list_entry));
-       if (!list)
-               return NULL;
+       unsigned i;
 
        /* add the vm page table to the list */
-       for (i = 0, idx = 0; i <= vm->max_pde_used; i++) {
-               if (!vm->page_tables[i].bo)
+       for (i = 0; i <= vm->max_pde_used; ++i) {
+               struct amdgpu_bo_list_entry *entry = &vm->page_tables[i].entry;
+
+               if (!entry->robj)
                        continue;
 
-               list[idx].robj = vm->page_tables[i].bo;
-               list[idx].prefered_domains = AMDGPU_GEM_DOMAIN_VRAM;
-               list[idx].allowed_domains = AMDGPU_GEM_DOMAIN_VRAM;
-               list[idx].priority = 0;
-               list[idx].tv.bo = &list[idx].robj->tbo;
-               list[idx].tv.shared = true;
-               list_add(&list[idx++].tv.head, duplicates);
+               list_add(&entry->tv.head, duplicates);
        }
-
-       return list;
 }
 
 /**
@@ -474,7 +461,7 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
 
        /* walk over the address space and update the page directory */
        for (pt_idx = 0; pt_idx <= vm->max_pde_used; ++pt_idx) {
-               struct amdgpu_bo *bo = vm->page_tables[pt_idx].bo;
+               struct amdgpu_bo *bo = vm->page_tables[pt_idx].entry.robj;
                uint64_t pde, pt;
 
                if (bo == NULL)
@@ -651,7 +638,7 @@ static int amdgpu_vm_update_ptes(struct amdgpu_device *adev,
        /* walk over the address space and update the page tables */
        for (addr = start; addr < end; ) {
                uint64_t pt_idx = addr >> amdgpu_vm_block_size;
-               struct amdgpu_bo *pt = vm->page_tables[pt_idx].bo;
+               struct amdgpu_bo *pt = vm->page_tables[pt_idx].entry.robj;
                unsigned nptes;
                uint64_t pte;
                int r;
@@ -1083,9 +1070,11 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
        /* walk over the address space and allocate the page tables */
        for (pt_idx = saddr; pt_idx <= eaddr; ++pt_idx) {
                struct reservation_object *resv = vm->page_directory->tbo.resv;
+               struct amdgpu_bo_list_entry *entry;
                struct amdgpu_bo *pt;
 
-               if (vm->page_tables[pt_idx].bo)
+               entry = &vm->page_tables[pt_idx].entry;
+               if (entry->robj)
                        continue;
 
                r = amdgpu_bo_create(adev, AMDGPU_VM_PTE_COUNT * 8,
@@ -1102,8 +1091,13 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
                        goto error_free;
                }
 
+               entry->robj = pt;
+               entry->prefered_domains = AMDGPU_GEM_DOMAIN_VRAM;
+               entry->allowed_domains = AMDGPU_GEM_DOMAIN_VRAM;
+               entry->priority = 0;
+               entry->tv.bo = &entry->robj->tbo;
+               entry->tv.shared = true;
                vm->page_tables[pt_idx].addr = 0;
-               vm->page_tables[pt_idx].bo = pt;
        }
 
        return 0;
@@ -1334,7 +1328,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
        }
 
        for (i = 0; i < amdgpu_vm_num_pdes(adev); i++)
-               amdgpu_bo_unref(&vm->page_tables[i].bo);
+               amdgpu_bo_unref(&vm->page_tables[i].entry.robj);
        kfree(vm->page_tables);
 
        amdgpu_bo_unref(&vm->page_directory);