From 8f19cd78c986fb0eb24a1847931c096ec9e214a5 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Thu, 30 Nov 2017 15:28:03 +0100 Subject: [PATCH] drm/amdgpu: remove last_entry_used from the VM code MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Not needed any more. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 52 +++++++++++++++++++--------------- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 1 - 2 files changed, 29 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index bd6296a..25fdcba 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -329,9 +329,6 @@ static int amdgpu_vm_alloc_levels(struct amdgpu_device *adev, to >= amdgpu_vm_num_entries(adev, level)) return -EINVAL; - if (to > parent->last_entry_used) - parent->last_entry_used = to; - ++level; saddr = saddr & ((1 << shift) - 1); eaddr = eaddr & ((1 << shift) - 1); @@ -1184,16 +1181,19 @@ error_free: * * Mark all PD level as invalid after an error. */ -static void amdgpu_vm_invalidate_level(struct amdgpu_vm *vm, - struct amdgpu_vm_pt *parent) +static void amdgpu_vm_invalidate_level(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + struct amdgpu_vm_pt *parent, + unsigned level) { - unsigned pt_idx; + unsigned pt_idx, num_entries; /* * Recurse into the subdirectories. This recursion is harmless because * we only have a maximum of 5 layers. */ - for (pt_idx = 0; pt_idx <= parent->last_entry_used; ++pt_idx) { + num_entries = amdgpu_vm_num_entries(adev, level); + for (pt_idx = 0; pt_idx < num_entries; ++pt_idx) { struct amdgpu_vm_pt *entry = &parent->entries[pt_idx]; if (!entry->base.bo) @@ -1204,7 +1204,7 @@ static void amdgpu_vm_invalidate_level(struct amdgpu_vm *vm, if (list_empty(&entry->base.vm_status)) list_add(&entry->base.vm_status, &vm->relocated); spin_unlock(&vm->status_lock); - amdgpu_vm_invalidate_level(vm, entry); + amdgpu_vm_invalidate_level(adev, vm, entry, level + 1); } } @@ -1246,7 +1246,8 @@ int amdgpu_vm_update_directories(struct amdgpu_device *adev, r = amdgpu_vm_update_pde(adev, vm, pt, entry); if (r) { - amdgpu_vm_invalidate_level(vm, &vm->root); + amdgpu_vm_invalidate_level(adev, vm, + &vm->root, 0); return r; } spin_lock(&vm->status_lock); @@ -1649,7 +1650,7 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, error_free: amdgpu_job_free(job); - amdgpu_vm_invalidate_level(vm, &vm->root); + amdgpu_vm_invalidate_level(adev, vm, &vm->root, 0); return r; } @@ -2713,26 +2714,31 @@ error_free_sched_entity: /** * amdgpu_vm_free_levels - free PD/PT levels * - * @level: PD/PT starting level to free + * @adev: amdgpu device structure + * @parent: PD/PT starting level to free + * @level: level of parent structure * * Free the page directory or page table level and all sub levels. */ -static void amdgpu_vm_free_levels(struct amdgpu_vm_pt *level) +static void amdgpu_vm_free_levels(struct amdgpu_device *adev, + struct amdgpu_vm_pt *parent, + unsigned level) { - unsigned i; + unsigned i, num_entries = amdgpu_vm_num_entries(adev, level); - if (level->base.bo) { - list_del(&level->base.bo_list); - list_del(&level->base.vm_status); - amdgpu_bo_unref(&level->base.bo->shadow); - amdgpu_bo_unref(&level->base.bo); + if (parent->base.bo) { + list_del(&parent->base.bo_list); + list_del(&parent->base.vm_status); + amdgpu_bo_unref(&parent->base.bo->shadow); + amdgpu_bo_unref(&parent->base.bo); } - if (level->entries) - for (i = 0; i <= level->last_entry_used; i++) - amdgpu_vm_free_levels(&level->entries[i]); + if (parent->entries) + for (i = 0; i < num_entries; i++) + amdgpu_vm_free_levels(adev, &parent->entries[i], + level + 1); - kvfree(level->entries); + kvfree(parent->entries); } /** @@ -2790,7 +2796,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm) if (r) { dev_err(adev->dev, "Leaking page tables because BO reservation failed\n"); } else { - amdgpu_vm_free_levels(&vm->root); + amdgpu_vm_free_levels(adev, &vm->root, 0); amdgpu_bo_unreserve(root); } amdgpu_bo_unref(&root); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 1599804..2f1d0c8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -142,7 +142,6 @@ struct amdgpu_vm_pt { /* array of page tables, one for each directory entry */ struct amdgpu_vm_pt *entries; - unsigned last_entry_used; }; #define AMDGPU_VM_FAULT(pasid, addr) (((u64)(pasid) << 48) | (addr)) -- 2.7.4