This commit only here for others to test and for CI to build. It is a squash of work by Christian König and Danilo Krummrich:
https://patchwork.freedesktop.org/series/114464/ https://patchwork.freedesktop.org/patch/530670/?series=112994&rev=4 --- Documentation/gpu/drm-mm.rst | 12 + drivers/gpu/drm/Kconfig | 7 + drivers/gpu/drm/Makefile | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 5 +- .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 302 +++++++----------- drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c | 71 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h | 5 +- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 210 ++++++------ drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h | 7 +- drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c | 42 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 77 ++--- drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 86 +++-- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 20 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 6 +- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 32 +- drivers/gpu/drm/drm_exec.c | 248 ++++++++++++++ drivers/gpu/drm/qxl/qxl_drv.h | 7 +- drivers/gpu/drm/qxl/qxl_release.c | 67 ++-- drivers/gpu/drm/radeon/radeon.h | 7 +- drivers/gpu/drm/radeon/radeon_cs.c | 45 +-- drivers/gpu/drm/radeon/radeon_gem.c | 40 ++- drivers/gpu/drm/radeon/radeon_object.c | 25 +- drivers/gpu/drm/radeon/radeon_object.h | 2 +- drivers/gpu/drm/radeon/radeon_vm.c | 10 +- drivers/gpu/drm/tests/Makefile | 3 +- drivers/gpu/drm/tests/drm_exec_test.c | 73 +++++ drivers/gpu/drm/ttm/Makefile | 4 +- drivers/gpu/drm/vmwgfx/Makefile | 2 +- .../drm/{ttm => vmwgfx}/ttm_execbuf_util.c | 7 +- .../gpu/drm/vmwgfx}/ttm_execbuf_util.h | 0 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 2 +- drivers/gpu/drm/vmwgfx/vmwgfx_validation.h | 2 +- include/drm/drm_exec.h | 115 +++++++ 34 files changed, 924 insertions(+), 620 deletions(-) create mode 100644 drivers/gpu/drm/drm_exec.c create mode 100644 drivers/gpu/drm/tests/drm_exec_test.c rename drivers/gpu/drm/{ttm => vmwgfx}/ttm_execbuf_util.c (97%) rename {include/drm/ttm => drivers/gpu/drm/vmwgfx}/ttm_execbuf_util.h (100%) create mode 100644 include/drm/drm_exec.h diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index a79fd3549ff8..a52e6f4117d6 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -493,6 +493,18 @@ DRM Sync Objects .. kernel-doc:: drivers/gpu/drm/drm_syncobj.c :export: +DRM Execution context +===================== + +.. kernel-doc:: drivers/gpu/drm/drm_exec.c + :doc: Overview + +.. kernel-doc:: include/drm/drm_exec.h + :internal: + +.. kernel-doc:: drivers/gpu/drm/drm_exec.c + :export: + GPU Scheduler ============= diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e928284b4357..c15e9aaa0eca 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -80,6 +80,7 @@ config DRM_KUNIT_TEST select DRM_BUDDY select DRM_EXPORT_FOR_TESTS if m select DRM_KUNIT_TEST_HELPERS + select DRM_EXEC default KUNIT_ALL_TESTS help This builds unit tests for DRM. This option is not useful for @@ -201,6 +202,12 @@ config DRM_TTM GPU memory types. Will be enabled automatically if a device driver uses it. +config DRM_EXEC + tristate + depends on DRM + help + Execution context for command submissions + config DRM_BUDDY tristate depends on DRM diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 66dd2c48944a..9c4461f0a665 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -79,6 +79,8 @@ obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o # # Memory-management helpers # +# +obj-$(CONFIG_DRM_EXEC) += drm_exec.o obj-$(CONFIG_DRM_BUDDY) += drm_buddy.o diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 8cf2cc50b3de..ef1994798f89 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -53,7 +53,6 @@ #include <drm/ttm/ttm_bo.h> #include <drm/ttm/ttm_placement.h> -#include <drm/ttm/ttm_execbuf_util.h> #include <drm/amdgpu_drm.h> #include <drm/drm_gem.h> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h index 01ba3589b60a..dfb41d56d236 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h @@ -25,13 +25,13 @@ #ifndef AMDGPU_AMDKFD_H_INCLUDED #define AMDGPU_AMDKFD_H_INCLUDED +#include <linux/list.h> #include <linux/types.h> #include <linux/mm.h> #include <linux/kthread.h> #include <linux/workqueue.h> #include <linux/mmu_notifier.h> #include <kgd_kfd_interface.h> -#include <drm/ttm/ttm_execbuf_util.h> #include "amdgpu_sync.h" #include "amdgpu_vm.h" @@ -69,8 +69,7 @@ struct kgd_mem { struct hmm_range *range; struct list_head attachments; /* protected by amdkfd_process_info.lock */ - struct ttm_validate_buffer validate_list; - struct ttm_validate_buffer resv_list; + struct list_head validate_list; uint32_t domain; unsigned int mapped_to_gpu_memory; uint64_t va; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index c87515210c4f..24887bf8709a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -27,6 +27,8 @@ #include <linux/sched/task.h> #include <drm/ttm/ttm_tt.h> +#include <drm/drm_exec.h> + #include "amdgpu_object.h" #include "amdgpu_gem.h" #include "amdgpu_vm.h" @@ -905,28 +907,19 @@ static void add_kgd_mem_to_kfd_bo_list(struct kgd_mem *mem, struct amdkfd_process_info *process_info, bool userptr) { - struct ttm_validate_buffer *entry = &mem->validate_list; - struct amdgpu_bo *bo = mem->bo; - - INIT_LIST_HEAD(&entry->head); - entry->num_shared = 1; - entry->bo = &bo->tbo; - mutex_lock(&process_info->lock); if (userptr) - list_add_tail(&entry->head, &process_info->userptr_valid_list); + list_add_tail(&mem->validate_list, + &process_info->userptr_valid_list); else - list_add_tail(&entry->head, &process_info->kfd_bo_list); + list_add_tail(&mem->validate_list, &process_info->kfd_bo_list); mutex_unlock(&process_info->lock); } static void remove_kgd_mem_from_kfd_bo_list(struct kgd_mem *mem, struct amdkfd_process_info *process_info) { - struct ttm_validate_buffer *bo_list_entry; - - bo_list_entry = &mem->validate_list; mutex_lock(&process_info->lock); - list_del(&bo_list_entry->head); + list_del(&mem->validate_list); mutex_unlock(&process_info->lock); } @@ -1013,13 +1006,12 @@ static int init_user_pages(struct kgd_mem *mem, uint64_t user_addr, * object can track VM updates. */ struct bo_vm_reservation_context { - struct amdgpu_bo_list_entry kfd_bo; /* BO list entry for the KFD BO */ - unsigned int n_vms; /* Number of VMs reserved */ - struct amdgpu_bo_list_entry *vm_pd; /* Array of VM BO list entries */ - struct ww_acquire_ctx ticket; /* Reservation ticket */ - struct list_head list, duplicates; /* BO lists */ - struct amdgpu_sync *sync; /* Pointer to sync object */ - bool reserved; /* Whether BOs are reserved */ + /* DRM execution context for the reservation */ + struct drm_exec exec; + /* Number of VMs reserved */ + unsigned int n_vms; + /* Pointer to sync object */ + struct amdgpu_sync *sync; }; enum bo_vm_match { @@ -1043,35 +1035,24 @@ static int reserve_bo_and_vm(struct kgd_mem *mem, WARN_ON(!vm); - ctx->reserved = false; ctx->n_vms = 1; ctx->sync = &mem->sync; - - INIT_LIST_HEAD(&ctx->list); - INIT_LIST_HEAD(&ctx->duplicates); - - ctx->vm_pd = kcalloc(ctx->n_vms, sizeof(*ctx->vm_pd), GFP_KERNEL); - if (!ctx->vm_pd) - return -ENOMEM; - - ctx->kfd_bo.priority = 0; - ctx->kfd_bo.tv.bo = &bo->tbo; - ctx->kfd_bo.tv.num_shared = 1; - list_add(&ctx->kfd_bo.tv.head, &ctx->list); - - amdgpu_vm_get_pd_bo(vm, &ctx->list, &ctx->vm_pd[0]); - - ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list, - false, &ctx->duplicates); - if (ret) { - pr_err("Failed to reserve buffers in ttm.\n"); - kfree(ctx->vm_pd); - ctx->vm_pd = NULL; - return ret; + drm_exec_init(&ctx->exec, true); + drm_exec_while_not_all_locked(&ctx->exec) { + ret = amdgpu_vm_lock_pd(vm, &ctx->exec); + if (likely(!ret)) + ret = drm_exec_prepare_obj(&ctx->exec, &bo->tbo.base, + 0); + drm_exec_continue_on_contention(&ctx->exec); + if (unlikely(ret)) + goto error; } - - ctx->reserved = true; return 0; + +error: + pr_err("Failed to reserve buffers in ttm.\n"); + drm_exec_fini(&ctx->exec); + return ret; } /** @@ -1088,63 +1069,39 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem, struct amdgpu_vm *vm, enum bo_vm_match map_type, struct bo_vm_reservation_context *ctx) { - struct amdgpu_bo *bo = mem->bo; struct kfd_mem_attachment *entry; - unsigned int i; + struct amdgpu_bo *bo = mem->bo; int ret; - ctx->reserved = false; - ctx->n_vms = 0; - ctx->vm_pd = NULL; ctx->sync = &mem->sync; + drm_exec_init(&ctx->exec, true); + drm_exec_while_not_all_locked(&ctx->exec) { + ctx->n_vms = 0; + 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)) + continue; - INIT_LIST_HEAD(&ctx->list); - INIT_LIST_HEAD(&ctx->duplicates); - - 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)) - continue; - - ctx->n_vms++; - } - - if (ctx->n_vms != 0) { - ctx->vm_pd = kcalloc(ctx->n_vms, sizeof(*ctx->vm_pd), - GFP_KERNEL); - if (!ctx->vm_pd) - return -ENOMEM; - } - - ctx->kfd_bo.priority = 0; - ctx->kfd_bo.tv.bo = &bo->tbo; - ctx->kfd_bo.tv.num_shared = 1; - list_add(&ctx->kfd_bo.tv.head, &ctx->list); - - i = 0; - 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)) - continue; - - amdgpu_vm_get_pd_bo(entry->bo_va->base.vm, &ctx->list, - &ctx->vm_pd[i]); - i++; - } + ret = amdgpu_vm_lock_pd(vm, &ctx->exec); + drm_exec_break_on_contention(&ctx->exec); + if (unlikely(ret)) + goto error; + ++ctx->n_vms; + } + drm_exec_continue_on_contention(&ctx->exec); - ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list, - false, &ctx->duplicates); - if (ret) { - pr_err("Failed to reserve buffers in ttm.\n"); - kfree(ctx->vm_pd); - ctx->vm_pd = NULL; - return ret; + ret = drm_exec_prepare_obj(&ctx->exec, &bo->tbo.base, 1); + drm_exec_continue_on_contention(&ctx->exec); + if (unlikely(ret)) + goto error; } - - ctx->reserved = true; return 0; + +error: + pr_err("Failed to reserve buffers in ttm.\n"); + drm_exec_fini(&ctx->exec); + return ret; } /** @@ -1165,15 +1122,8 @@ static int unreserve_bo_and_vms(struct bo_vm_reservation_context *ctx, if (wait) ret = amdgpu_sync_wait(ctx->sync, intr); - if (ctx->reserved) - ttm_eu_backoff_reservation(&ctx->ticket, &ctx->list); - kfree(ctx->vm_pd); - + drm_exec_fini(&ctx->exec); ctx->sync = NULL; - - ctx->reserved = false; - ctx->vm_pd = NULL; - return ret; } @@ -1763,7 +1713,6 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( bool use_release_notifier = (mem->bo->kfd_bo == mem); 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; int ret; bool is_imported = false; @@ -1791,9 +1740,8 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( } /* Make sure restore workers don't access the BO any more */ - bo_list_entry = &mem->validate_list; mutex_lock(&process_info->lock); - list_del(&bo_list_entry->head); + list_del(&mem->validate_list); mutex_unlock(&process_info->lock); /* Cleanup user pages and MMU notifiers */ @@ -2356,14 +2304,14 @@ static int update_invalid_user_pages(struct amdkfd_process_info *process_info, /* Move all invalidated BOs to the userptr_inval_list */ list_for_each_entry_safe(mem, tmp_mem, &process_info->userptr_valid_list, - validate_list.head) + validate_list) if (mem->invalid) - list_move_tail(&mem->validate_list.head, + list_move_tail(&mem->validate_list, &process_info->userptr_inval_list); /* Go through userptr_inval_list and update any invalid user_pages */ list_for_each_entry(mem, &process_info->userptr_inval_list, - validate_list.head) { + validate_list) { invalid = mem->invalid; if (!invalid) /* BO hasn't been invalidated since the last @@ -2441,50 +2389,43 @@ static int update_invalid_user_pages(struct amdkfd_process_info *process_info, */ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info) { - struct amdgpu_bo_list_entry *pd_bo_list_entries; - struct list_head resv_list, duplicates; - struct ww_acquire_ctx ticket; + struct ttm_operation_ctx ctx = { false, false }; struct amdgpu_sync sync; + struct drm_exec exec; struct amdgpu_vm *peer_vm; struct kgd_mem *mem, *tmp_mem; struct amdgpu_bo *bo; - struct ttm_operation_ctx ctx = { false, false }; - int i, ret; - - pd_bo_list_entries = kcalloc(process_info->n_vms, - sizeof(struct amdgpu_bo_list_entry), - GFP_KERNEL); - if (!pd_bo_list_entries) { - pr_err("%s: Failed to allocate PD BO list entries\n", __func__); - ret = -ENOMEM; - goto out_no_mem; - } - - INIT_LIST_HEAD(&resv_list); - INIT_LIST_HEAD(&duplicates); + int ret; - /* Get all the page directory BOs that need to be reserved */ - i = 0; - list_for_each_entry(peer_vm, &process_info->vm_list_head, - vm_list_node) - amdgpu_vm_get_pd_bo(peer_vm, &resv_list, - &pd_bo_list_entries[i++]); - /* Add the userptr_inval_list entries to resv_list */ - list_for_each_entry(mem, &process_info->userptr_inval_list, - validate_list.head) { - list_add_tail(&mem->resv_list.head, &resv_list); - mem->resv_list.bo = mem->validate_list.bo; - mem->resv_list.num_shared = mem->validate_list.num_shared; - } + amdgpu_sync_create(&sync); + drm_exec_init(&exec, true); /* Reserve all BOs and page tables for validation */ - ret = ttm_eu_reserve_buffers(&ticket, &resv_list, false, &duplicates); - WARN(!list_empty(&duplicates), "Duplicates should be empty"); - if (ret) - goto out_free; + drm_exec_while_not_all_locked(&exec) { + /* Reserve all the page directories */ + list_for_each_entry(peer_vm, &process_info->vm_list_head, + vm_list_node) { + ret = amdgpu_vm_lock_pd(peer_vm, &exec); + drm_exec_break_on_contention(&exec); + if (unlikely(ret)) + goto unreserve_out; + } + drm_exec_continue_on_contention(&exec); - amdgpu_sync_create(&sync); + /* Reserve the userptr_inval_list entries to resv_list */ + list_for_each_entry(mem, &process_info->userptr_inval_list, + validate_list) { + struct drm_gem_object *gobj; + + gobj = &mem->bo->tbo.base; + ret = drm_exec_prepare_obj(&exec, gobj, 1); + drm_exec_break_on_contention(&exec); + if (unlikely(ret)) + goto unreserve_out; + } + drm_exec_continue_on_contention(&exec); + } ret = process_validate_vms(process_info); if (ret) @@ -2493,7 +2434,7 @@ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info) /* Validate BOs and update GPUVM page tables */ list_for_each_entry_safe(mem, tmp_mem, &process_info->userptr_inval_list, - validate_list.head) { + validate_list) { struct kfd_mem_attachment *attachment; bo = mem->bo; @@ -2535,12 +2476,9 @@ static int validate_invalid_user_pages(struct amdkfd_process_info *process_info) ret = process_update_pds(process_info, &sync); unreserve_out: - ttm_eu_backoff_reservation(&ticket, &resv_list); + drm_exec_fini(&exec); amdgpu_sync_wait(&sync, false); amdgpu_sync_free(&sync); -out_free: - kfree(pd_bo_list_entries); -out_no_mem: return ret; } @@ -2556,7 +2494,7 @@ static int confirm_valid_user_pages_locked(struct amdkfd_process_info *process_i list_for_each_entry_safe(mem, tmp_mem, &process_info->userptr_inval_list, - validate_list.head) { + validate_list) { bool valid = amdgpu_ttm_tt_get_user_pages_done( mem->bo->tbo.ttm, mem->range); @@ -2568,7 +2506,7 @@ static int confirm_valid_user_pages_locked(struct amdkfd_process_info *process_i } WARN(mem->invalid, "Valid BO is marked invalid"); - list_move_tail(&mem->validate_list.head, + list_move_tail(&mem->validate_list, &process_info->userptr_valid_list); } @@ -2678,50 +2616,46 @@ static void amdgpu_amdkfd_restore_userptr_worker(struct work_struct *work) */ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef) { - struct amdgpu_bo_list_entry *pd_bo_list; struct amdkfd_process_info *process_info = info; struct amdgpu_vm *peer_vm; struct kgd_mem *mem; - struct bo_vm_reservation_context ctx; struct amdgpu_amdkfd_fence *new_fence; - int ret = 0, i; struct list_head duplicate_save; struct amdgpu_sync sync_obj; unsigned long failed_size = 0; unsigned long total_size = 0; + struct drm_exec exec; + int ret; INIT_LIST_HEAD(&duplicate_save); - INIT_LIST_HEAD(&ctx.list); - INIT_LIST_HEAD(&ctx.duplicates); - pd_bo_list = kcalloc(process_info->n_vms, - sizeof(struct amdgpu_bo_list_entry), - GFP_KERNEL); - if (!pd_bo_list) - return -ENOMEM; - - i = 0; mutex_lock(&process_info->lock); - list_for_each_entry(peer_vm, &process_info->vm_list_head, - vm_list_node) - amdgpu_vm_get_pd_bo(peer_vm, &ctx.list, &pd_bo_list[i++]); - /* Reserve all BOs and page tables/directory. Add all BOs from - * kfd_bo_list to ctx.list - */ - list_for_each_entry(mem, &process_info->kfd_bo_list, - validate_list.head) { - - list_add_tail(&mem->resv_list.head, &ctx.list); - mem->resv_list.bo = mem->validate_list.bo; - mem->resv_list.num_shared = mem->validate_list.num_shared; - } + drm_exec_init(&exec, false); + drm_exec_while_not_all_locked(&exec) { + list_for_each_entry(peer_vm, &process_info->vm_list_head, + vm_list_node) { + ret = amdgpu_vm_lock_pd(peer_vm, &exec); + drm_exec_break_on_contention(&exec); + if (unlikely(ret)) + goto ttm_reserve_fail; + } + drm_exec_continue_on_contention(&exec); - ret = ttm_eu_reserve_buffers(&ctx.ticket, &ctx.list, - false, &duplicate_save); - if (ret) { - pr_debug("Memory eviction: TTM Reserve Failed. Try again\n"); - goto ttm_reserve_fail; + /* Reserve all BOs and page tables/directory. Add all BOs from + * kfd_bo_list to ctx.list + */ + list_for_each_entry(mem, &process_info->kfd_bo_list, + validate_list) { + struct drm_gem_object *gobj; + + gobj = &mem->bo->tbo.base; + ret = drm_exec_prepare_obj(&exec, gobj, 1); + drm_exec_break_on_contention(&exec); + if (unlikely(ret)) + goto ttm_reserve_fail; + } + drm_exec_continue_on_contention(&exec); } amdgpu_sync_create(&sync_obj); @@ -2739,7 +2673,7 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef) /* Validate BOs and map them to GPUVM (update VM page tables). */ list_for_each_entry(mem, &process_info->kfd_bo_list, - validate_list.head) { + validate_list) { struct amdgpu_bo *bo = mem->bo; uint32_t domain = mem->domain; @@ -2812,8 +2746,7 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef) *ef = dma_fence_get(&new_fence->base); /* Attach new eviction fence to all BOs except pinned ones */ - list_for_each_entry(mem, &process_info->kfd_bo_list, - validate_list.head) { + list_for_each_entry(mem, &process_info->kfd_bo_list, validate_list) { if (mem->bo->tbo.pin_count) continue; @@ -2832,11 +2765,10 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef) } validate_map_fail: - ttm_eu_backoff_reservation(&ctx.ticket, &ctx.list); amdgpu_sync_free(&sync_obj); ttm_reserve_fail: + drm_exec_fini(&exec); mutex_unlock(&process_info->lock); - kfree(pd_bo_list); return ret; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c index 252a876b0725..b6298e901cbd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c @@ -28,6 +28,7 @@ * Christian König <deathsim...@vodafone.de> */ +#include <linux/sort.h> #include <linux/uaccess.h> #include "amdgpu.h" @@ -50,13 +51,20 @@ static void amdgpu_bo_list_free(struct kref *ref) refcount); struct amdgpu_bo_list_entry *e; - amdgpu_bo_list_for_each_entry(e, list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); + amdgpu_bo_list_for_each_entry(e, list) + amdgpu_bo_unref(&e->bo); + call_rcu(&list->rhead, amdgpu_bo_list_free_rcu); +} - amdgpu_bo_unref(&bo); - } +static int amdgpu_bo_list_entry_cmp(const void *_a, const void *_b) +{ + const struct amdgpu_bo_list_entry *a = _a, *b = _b; - call_rcu(&list->rhead, amdgpu_bo_list_free_rcu); + if (a->priority > b->priority) + return 1; + if (a->priority < b->priority) + return -1; + return 0; } int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp, @@ -118,7 +126,7 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp, entry->priority = min(info[i].bo_priority, AMDGPU_BO_LIST_MAX_PRIORITY); - entry->tv.bo = &bo->tbo; + entry->bo = bo; if (bo->preferred_domains == AMDGPU_GEM_DOMAIN_GDS) list->gds_obj = bo; @@ -133,6 +141,8 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp, list->first_userptr = first_userptr; list->num_entries = num_entries; + sort(array, last_entry, sizeof(struct amdgpu_bo_list_entry), + amdgpu_bo_list_entry_cmp, NULL); trace_amdgpu_cs_bo_status(list->num_entries, total_size); @@ -141,16 +151,10 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp, return 0; error_free: - for (i = 0; i < last_entry; ++i) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(array[i].tv.bo); - - amdgpu_bo_unref(&bo); - } - for (i = first_userptr; i < num_entries; ++i) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(array[i].tv.bo); - - amdgpu_bo_unref(&bo); - } + for (i = 0; i < last_entry; ++i) + amdgpu_bo_unref(&array[i].bo); + for (i = first_userptr; i < num_entries; ++i) + amdgpu_bo_unref(&array[i].bo); kvfree(list); return r; @@ -182,41 +186,6 @@ int amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id, return -ENOENT; } -void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, - struct list_head *validated) -{ - /* This is based on the bucket sort with O(n) time complexity. - * An item with priority "i" is added to bucket[i]. The lists are then - * concatenated in descending order. - */ - struct list_head bucket[AMDGPU_BO_LIST_NUM_BUCKETS]; - struct amdgpu_bo_list_entry *e; - unsigned i; - - for (i = 0; i < AMDGPU_BO_LIST_NUM_BUCKETS; i++) - INIT_LIST_HEAD(&bucket[i]); - - /* Since buffers which appear sooner in the relocation list are - * likely to be used more often than buffers which appear later - * in the list, the sort mustn't change the ordering of buffers - * with the same priority, i.e. it must be stable. - */ - amdgpu_bo_list_for_each_entry(e, list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); - unsigned priority = e->priority; - - if (!bo->parent) - list_add_tail(&e->tv.head, &bucket[priority]); - - e->user_pages = NULL; - e->range = NULL; - } - - /* Connect the sorted buckets in the output list. */ - for (i = 0; i < AMDGPU_BO_LIST_NUM_BUCKETS; i++) - list_splice(&bucket[i], validated); -} - void amdgpu_bo_list_put(struct amdgpu_bo_list *list) { kref_put(&list->refcount, amdgpu_bo_list_free); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h index ededdc01ca28..26c01cb131f2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.h @@ -23,7 +23,6 @@ #ifndef __AMDGPU_BO_LIST_H__ #define __AMDGPU_BO_LIST_H__ -#include <drm/ttm/ttm_execbuf_util.h> #include <drm/amdgpu_drm.h> struct hmm_range; @@ -36,7 +35,7 @@ struct amdgpu_bo_va; struct amdgpu_fpriv; struct amdgpu_bo_list_entry { - struct ttm_validate_buffer tv; + struct amdgpu_bo *bo; struct amdgpu_bo_va *bo_va; uint32_t priority; struct page **user_pages; @@ -60,8 +59,6 @@ struct amdgpu_bo_list { int amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id, struct amdgpu_bo_list **result); -void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, - struct list_head *validated); void amdgpu_bo_list_put(struct amdgpu_bo_list *list); int amdgpu_bo_create_list_entry_array(struct drm_amdgpu_bo_list_in *in, struct drm_amdgpu_bo_list_entry **info_param); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 08eced097bd8..9e751f5d4aa7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -65,6 +65,7 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, } amdgpu_sync_create(&p->sync); + drm_exec_init(&p->exec, true); return 0; } @@ -122,7 +123,6 @@ static int amdgpu_cs_p1_user_fence(struct amdgpu_cs_parser *p, uint32_t *offset) { struct drm_gem_object *gobj; - struct amdgpu_bo *bo; unsigned long size; int r; @@ -130,21 +130,16 @@ static int amdgpu_cs_p1_user_fence(struct amdgpu_cs_parser *p, if (gobj == NULL) return -EINVAL; - bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj)); - p->uf_entry.priority = 0; - p->uf_entry.tv.bo = &bo->tbo; - /* One for TTM and two for the CS job */ - p->uf_entry.tv.num_shared = 3; - + p->uf_bo = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj)); drm_gem_object_put(gobj); - size = amdgpu_bo_size(bo); + size = amdgpu_bo_size(p->uf_bo); if (size != PAGE_SIZE || (data->offset + 8) > size) { r = -EINVAL; goto error_unref; } - if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) { + if (amdgpu_ttm_tt_get_usermm(p->uf_bo->tbo.ttm)) { r = -EINVAL; goto error_unref; } @@ -154,7 +149,7 @@ static int amdgpu_cs_p1_user_fence(struct amdgpu_cs_parser *p, return 0; error_unref: - amdgpu_bo_unref(&bo); + amdgpu_bo_unref(&p->uf_bo); return r; } @@ -310,7 +305,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p, goto free_all_kdata; } - if (p->uf_entry.tv.bo) + if (p->uf_bo) p->gang_leader->uf_addr = uf_offset; kvfree(chunk_array); @@ -355,7 +350,7 @@ static int amdgpu_cs_p2_ib(struct amdgpu_cs_parser *p, ib = &job->ibs[job->num_ibs++]; /* MM engine doesn't support user fences */ - if (p->uf_entry.tv.bo && ring->funcs->no_user_fence) + if (p->uf_bo && ring->funcs->no_user_fence) return -EINVAL; if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX && @@ -814,55 +809,18 @@ static int amdgpu_cs_bo_validate(void *param, struct amdgpu_bo *bo) return r; } -static int amdgpu_cs_list_validate(struct amdgpu_cs_parser *p, - struct list_head *validated) -{ - struct ttm_operation_ctx ctx = { true, false }; - struct amdgpu_bo_list_entry *lobj; - int r; - - list_for_each_entry(lobj, validated, tv.head) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(lobj->tv.bo); - struct mm_struct *usermm; - - usermm = amdgpu_ttm_tt_get_usermm(bo->tbo.ttm); - if (usermm && usermm != current->mm) - return -EPERM; - - if (amdgpu_ttm_tt_is_userptr(bo->tbo.ttm) && - lobj->user_invalidated && lobj->user_pages) { - amdgpu_bo_placement_from_domain(bo, - AMDGPU_GEM_DOMAIN_CPU); - r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); - if (r) - return r; - - amdgpu_ttm_tt_set_user_pages(bo->tbo.ttm, - lobj->user_pages); - } - - r = amdgpu_cs_bo_validate(p, bo); - if (r) - return r; - - kvfree(lobj->user_pages); - lobj->user_pages = NULL; - } - return 0; -} - static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, union drm_amdgpu_cs *cs) { struct amdgpu_fpriv *fpriv = p->filp->driver_priv; + struct ttm_operation_ctx ctx = { true, false }; struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_list_entry *e; - struct list_head duplicates; + struct drm_gem_object *obj; + unsigned long index; unsigned int i; int r; - INIT_LIST_HEAD(&p->validated); - /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */ if (cs->in.bo_list_handle) { if (p->bo_list) @@ -882,25 +840,13 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, mutex_lock(&p->bo_list->bo_list_mutex); - /* One for TTM and one for the CS job */ - amdgpu_bo_list_for_each_entry(e, p->bo_list) - e->tv.num_shared = 2; - - amdgpu_bo_list_get_list(p->bo_list, &p->validated); - - INIT_LIST_HEAD(&duplicates); - amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd); - - if (p->uf_entry.tv.bo && !ttm_to_amdgpu_bo(p->uf_entry.tv.bo)->parent) - list_add(&p->uf_entry.tv.head, &p->validated); - /* Get userptr backing pages. If pages are updated after registered * in amdgpu_gem_userptr_ioctl(), amdgpu_cs_list_validate() will do * amdgpu_ttm_backend_bind() to flush and invalidate new pages */ amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); bool userpage_invalidated = false; + struct amdgpu_bo *bo = e->bo; int i; e->user_pages = kvmalloc_array(bo->tbo.ttm->num_pages, @@ -928,18 +874,56 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, e->user_invalidated = userpage_invalidated; } - r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true, - &duplicates); - if (unlikely(r != 0)) { - if (r != -ERESTARTSYS) - DRM_ERROR("ttm_eu_reserve_buffers failed.\n"); - goto out_free_user_pages; + drm_exec_while_not_all_locked(&p->exec) { + r = amdgpu_vm_lock_pd(&fpriv->vm, &p->exec); + drm_exec_continue_on_contention(&p->exec); + if (unlikely(r)) + goto out_free_user_pages; + + amdgpu_bo_list_for_each_entry(e, p->bo_list) { + r = drm_exec_prepare_obj(&p->exec, &e->bo->tbo.base, 2); + drm_exec_break_on_contention(&p->exec); + if (unlikely(r)) + goto out_free_user_pages; + + e->bo_va = amdgpu_vm_bo_find(vm, e->bo); + e->range = NULL; + } + drm_exec_continue_on_contention(&p->exec); + + if (p->uf_bo) { + r = drm_exec_prepare_obj(&p->exec, &p->uf_bo->tbo.base, + 2); + drm_exec_continue_on_contention(&p->exec); + if (unlikely(r)) + goto out_free_user_pages; + } } - amdgpu_bo_list_for_each_entry(e, p->bo_list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); + amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) { + struct mm_struct *usermm; - e->bo_va = amdgpu_vm_bo_find(vm, bo); + usermm = amdgpu_ttm_tt_get_usermm(e->bo->tbo.ttm); + if (usermm && usermm != current->mm) { + r = -EPERM; + goto out_free_user_pages; + } + + if (amdgpu_ttm_tt_is_userptr(e->bo->tbo.ttm) && + e->user_invalidated && e->user_pages) { + amdgpu_bo_placement_from_domain(e->bo, + AMDGPU_GEM_DOMAIN_CPU); + r = ttm_bo_validate(&e->bo->tbo, &e->bo->placement, + &ctx); + if (r) + goto out_free_user_pages; + + amdgpu_ttm_tt_set_user_pages(e->bo->tbo.ttm, + e->user_pages); + } + + kvfree(e->user_pages); + e->user_pages = NULL; } amdgpu_cs_get_threshold_for_moves(p->adev, &p->bytes_moved_threshold, @@ -951,25 +935,21 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, amdgpu_cs_bo_validate, p); if (r) { DRM_ERROR("amdgpu_vm_validate_pt_bos() failed.\n"); - goto error_validate; + goto out_free_user_pages; } - r = amdgpu_cs_list_validate(p, &duplicates); - if (r) - goto error_validate; - - r = amdgpu_cs_list_validate(p, &p->validated); - if (r) - goto error_validate; - - if (p->uf_entry.tv.bo) { - struct amdgpu_bo *uf = ttm_to_amdgpu_bo(p->uf_entry.tv.bo); + drm_exec_for_each_locked_object(&p->exec, index, obj) { + r = amdgpu_cs_bo_validate(p, gem_to_amdgpu_bo(obj)); + if (unlikely(r)) + goto out_free_user_pages; + } - r = amdgpu_ttm_alloc_gart(&uf->tbo); - if (r) - goto error_validate; + if (p->uf_bo) { + r = amdgpu_ttm_alloc_gart(&p->uf_bo->tbo); + if (unlikely(r)) + goto out_free_user_pages; - p->gang_leader->uf_addr += amdgpu_bo_gpu_offset(uf); + p->gang_leader->uf_addr += amdgpu_bo_gpu_offset(p->uf_bo); } amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved, @@ -981,12 +961,9 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, p->bo_list->oa_obj); return 0; -error_validate: - ttm_eu_backoff_reservation(&p->ticket, &p->validated); - out_free_user_pages: amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); + struct amdgpu_bo *bo = e->bo; if (!e->user_pages) continue; @@ -1093,7 +1070,6 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p) struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_list_entry *e; struct amdgpu_bo_va *bo_va; - struct amdgpu_bo *bo; unsigned int i; int r; @@ -1122,11 +1098,6 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p) } amdgpu_bo_list_for_each_entry(e, p->bo_list) { - /* ignore duplicates */ - bo = ttm_to_amdgpu_bo(e->tv.bo); - if (!bo) - continue; - bo_va = e->bo_va; if (bo_va == NULL) continue; @@ -1164,7 +1135,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p) if (amdgpu_vm_debug) { /* Invalidate all BOs to test for userspace bugs */ amdgpu_bo_list_for_each_entry(e, p->bo_list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); + struct amdgpu_bo *bo = e->bo; /* ignore duplicates */ if (!bo) @@ -1181,8 +1152,9 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p) { struct amdgpu_fpriv *fpriv = p->filp->driver_priv; struct drm_gpu_scheduler *sched; - struct amdgpu_bo_list_entry *e; + struct drm_gem_object *obj; struct dma_fence *fence; + unsigned long index; unsigned int i; int r; @@ -1193,8 +1165,9 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p) return r; } - list_for_each_entry(e, &p->validated, tv.head) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); + drm_exec_for_each_locked_object(&p->exec, index, obj) { + struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); + struct dma_resv *resv = bo->tbo.base.resv; enum amdgpu_sync_mode sync_mode; @@ -1258,6 +1231,8 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, struct amdgpu_fpriv *fpriv = p->filp->driver_priv; struct amdgpu_job *leader = p->gang_leader; struct amdgpu_bo_list_entry *e; + struct drm_gem_object *gobj; + unsigned long index; unsigned int i; uint64_t seq; int r; @@ -1296,9 +1271,8 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, */ r = 0; amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) { - struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo); - - r |= !amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm, e->range); + r |= !amdgpu_ttm_tt_get_user_pages_done(e->bo->tbo.ttm, + e->range); e->range = NULL; } if (r) { @@ -1307,20 +1281,22 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, } p->fence = dma_fence_get(&leader->base.s_fence->finished); - list_for_each_entry(e, &p->validated, tv.head) { + drm_exec_for_each_locked_object(&p->exec, index, gobj) { + + ttm_bo_move_to_lru_tail_unlocked(&gem_to_amdgpu_bo(gobj)->tbo); /* Everybody except for the gang leader uses READ */ for (i = 0; i < p->gang_size; ++i) { if (p->jobs[i] == leader) continue; - dma_resv_add_fence(e->tv.bo->base.resv, + dma_resv_add_fence(gobj->resv, &p->jobs[i]->base.s_fence->finished, DMA_RESV_USAGE_READ); } - /* The gang leader is remembered as writer */ - e->tv.num_shared = 0; + /* The gang leader as remembered as writer */ + dma_resv_add_fence(gobj->resv, p->fence, DMA_RESV_USAGE_WRITE); } seq = amdgpu_ctx_add_fence(p->ctx, p->entities[p->gang_leader_idx], @@ -1336,7 +1312,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, cs->out.handle = seq; leader->uf_sequence = seq; - amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->ticket); + amdgpu_vm_bo_trace_cs(&fpriv->vm, &p->exec.ticket); for (i = 0; i < p->gang_size; ++i) { amdgpu_job_free_resources(p->jobs[i]); trace_amdgpu_cs_ioctl(p->jobs[i]); @@ -1345,7 +1321,6 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, } amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm); - ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence); mutex_unlock(&p->adev->notifier_lock); mutex_unlock(&p->bo_list->bo_list_mutex); @@ -1366,6 +1341,8 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser) unsigned i; amdgpu_sync_free(&parser->sync); + drm_exec_fini(&parser->exec); + for (i = 0; i < parser->num_post_deps; i++) { drm_syncobj_put(parser->post_deps[i].syncobj); kfree(parser->post_deps[i].chain); @@ -1386,11 +1363,7 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser) if (parser->jobs[i]) amdgpu_job_free(parser->jobs[i]); } - if (parser->uf_entry.tv.bo) { - struct amdgpu_bo *uf = ttm_to_amdgpu_bo(parser->uf_entry.tv.bo); - - amdgpu_bo_unref(&uf); - } + amdgpu_bo_unref(&parser->uf_bo); } int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) @@ -1451,7 +1424,6 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) return 0; error_backoff: - ttm_eu_backoff_reservation(&parser.ticket, &parser.validated); mutex_unlock(&parser.bo_list->bo_list_mutex); error_fini: @@ -1786,7 +1758,7 @@ int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser, *map = mapping; /* Double check that the BO is reserved by this CS */ - if (dma_resv_locking_ctx((*bo)->tbo.base.resv) != &parser->ticket) + if (dma_resv_locking_ctx((*bo)->tbo.base.resv) != &parser->exec.ticket) return -EINVAL; if (!((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h index fb3e3d56d427..39c33ad100cb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h @@ -24,6 +24,7 @@ #define __AMDGPU_CS_H__ #include <linux/ww_mutex.h> +#include <drm/drm_exec.h> #include "amdgpu_job.h" #include "amdgpu_bo_list.h" @@ -62,11 +63,9 @@ struct amdgpu_cs_parser { struct amdgpu_job *gang_leader; /* buffer objects */ - struct ww_acquire_ctx ticket; + struct drm_exec exec; struct amdgpu_bo_list *bo_list; struct amdgpu_mn *mn; - struct amdgpu_bo_list_entry vm_pd; - struct list_head validated; struct dma_fence *fence; uint64_t bytes_moved_threshold; uint64_t bytes_moved_vis_threshold; @@ -74,7 +73,7 @@ struct amdgpu_cs_parser { uint64_t bytes_moved_vis; /* user fence */ - struct amdgpu_bo_list_entry uf_entry; + struct amdgpu_bo *uf_bo; unsigned num_post_deps; struct amdgpu_cs_post_dep *post_deps; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c index c6d4d41c4393..ea434c8de047 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c @@ -22,6 +22,8 @@ * * Author: monk....@amd.com */ +#include <drm/drm_exec.h> + #include "amdgpu.h" uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev) @@ -65,31 +67,25 @@ int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm, struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va, uint64_t csa_addr, uint32_t size) { - struct ww_acquire_ctx ticket; - struct list_head list; - struct amdgpu_bo_list_entry pd; - struct ttm_validate_buffer csa_tv; + struct drm_exec exec; int r; - INIT_LIST_HEAD(&list); - INIT_LIST_HEAD(&csa_tv.head); - csa_tv.bo = &bo->tbo; - csa_tv.num_shared = 1; - - list_add(&csa_tv.head, &list); - amdgpu_vm_get_pd_bo(vm, &list, &pd); - - r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); - if (r) { - DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); - return r; + drm_exec_init(&exec, true); + drm_exec_while_not_all_locked(&exec) { + r = amdgpu_vm_lock_pd(vm, &exec); + if (likely(!r)) + r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 0); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) { + DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); + goto error; + } } *bo_va = amdgpu_vm_bo_add(adev, vm, bo); if (!*bo_va) { - ttm_eu_backoff_reservation(&ticket, &list); - DRM_ERROR("failed to create bo_va for static CSA\n"); - return -ENOMEM; + r = -ENOMEM; + goto error; } r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size, @@ -99,10 +95,10 @@ int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm, if (r) { DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r); amdgpu_vm_bo_del(adev, *bo_va); - ttm_eu_backoff_reservation(&ticket, &list); - return r; + goto error; } - ttm_eu_backoff_reservation(&ticket, &list); - return 0; +error: + drm_exec_fini(&exec); + return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 863cb668e000..c5f74f241366 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -33,6 +33,7 @@ #include <drm/amdgpu_drm.h> #include <drm/drm_drv.h> +#include <drm/drm_exec.h> #include <drm/drm_gem_ttm_helper.h> #include <drm/ttm/ttm_tt.h> @@ -197,29 +198,23 @@ static void amdgpu_gem_object_close(struct drm_gem_object *obj, struct amdgpu_fpriv *fpriv = file_priv->driver_priv; struct amdgpu_vm *vm = &fpriv->vm; - struct amdgpu_bo_list_entry vm_pd; - struct list_head list, duplicates; struct dma_fence *fence = NULL; - struct ttm_validate_buffer tv; - struct ww_acquire_ctx ticket; struct amdgpu_bo_va *bo_va; + struct drm_exec exec; long r; - INIT_LIST_HEAD(&list); - INIT_LIST_HEAD(&duplicates); - - tv.bo = &bo->tbo; - tv.num_shared = 2; - list_add(&tv.head, &list); - - amdgpu_vm_get_pd_bo(vm, &list, &vm_pd); - - r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates); - if (r) { - dev_err(adev->dev, "leaking bo va because " - "we fail to reserve bo (%ld)\n", r); - return; + drm_exec_init(&exec, false); + drm_exec_while_not_all_locked(&exec) { + r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 0); + if (likely(!r)) + r = amdgpu_vm_lock_pd(vm, &exec); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) { + dev_err(adev->dev, "leaking bo va (%ld)\n", r); + goto out_unlock; + } } + bo_va = amdgpu_vm_bo_find(vm, bo); if (!bo_va || --bo_va->ref_count) goto out_unlock; @@ -229,6 +224,9 @@ static void amdgpu_gem_object_close(struct drm_gem_object *obj, goto out_unlock; r = amdgpu_vm_clear_freed(adev, vm, &fence); + if (unlikely(r < 0)) + dev_err(adev->dev, "failed to clear page " + "tables on GEM object close (%ld)\n", r); if (r || !fence) goto out_unlock; @@ -236,10 +234,7 @@ static void amdgpu_gem_object_close(struct drm_gem_object *obj, dma_fence_put(fence); out_unlock: - if (unlikely(r < 0)) - dev_err(adev->dev, "failed to clear page " - "tables on GEM object close (%ld)\n", r); - ttm_eu_backoff_reservation(&ticket, &list); + drm_exec_fini(&exec); } static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) @@ -673,10 +668,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, struct amdgpu_fpriv *fpriv = filp->driver_priv; struct amdgpu_bo *abo; struct amdgpu_bo_va *bo_va; - struct amdgpu_bo_list_entry vm_pd; - struct ttm_validate_buffer tv; - struct ww_acquire_ctx ticket; - struct list_head list, duplicates; + struct drm_exec exec; uint64_t va_flags; uint64_t vm_size; int r = 0; @@ -726,36 +718,37 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, return -EINVAL; } - INIT_LIST_HEAD(&list); - INIT_LIST_HEAD(&duplicates); if ((args->operation != AMDGPU_VA_OP_CLEAR) && !(args->flags & AMDGPU_VM_PAGE_PRT)) { gobj = drm_gem_object_lookup(filp, args->handle); if (gobj == NULL) return -ENOENT; abo = gem_to_amdgpu_bo(gobj); - tv.bo = &abo->tbo; - if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) - tv.num_shared = 1; - else - tv.num_shared = 0; - list_add(&tv.head, &list); } else { gobj = NULL; abo = NULL; } - amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd); + drm_exec_init(&exec, true); + drm_exec_while_not_all_locked(&exec) { + if (gobj) { + r = drm_exec_prepare_obj(&exec, gobj, 0); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) + goto error; + } - r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates); - if (r) - goto error_unref; + r = amdgpu_vm_lock_pd(&fpriv->vm, &exec); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) + goto error; + } if (abo) { bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo); if (!bo_va) { r = -ENOENT; - goto error_backoff; + goto error; } } else if (args->operation != AMDGPU_VA_OP_CLEAR) { bo_va = fpriv->prt_va; @@ -792,10 +785,8 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, args->operation); -error_backoff: - ttm_eu_backoff_reservation(&ticket, &list); - -error_unref: +error: + drm_exec_fini(&exec); drm_gem_object_put(gobj); return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index 82e27bd4f038..95292a65fd25 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -22,6 +22,7 @@ */ #include <linux/firmware.h> +#include <drm/drm_exec.h> #include "amdgpu_mes.h" #include "amdgpu.h" @@ -1126,34 +1127,29 @@ int amdgpu_mes_ctx_map_meta_data(struct amdgpu_device *adev, struct amdgpu_mes_ctx_data *ctx_data) { struct amdgpu_bo_va *bo_va; - struct ww_acquire_ctx ticket; - struct list_head list; - struct amdgpu_bo_list_entry pd; - struct ttm_validate_buffer csa_tv; struct amdgpu_sync sync; + struct drm_exec exec; int r; amdgpu_sync_create(&sync); - INIT_LIST_HEAD(&list); - INIT_LIST_HEAD(&csa_tv.head); - csa_tv.bo = &ctx_data->meta_data_obj->tbo; - csa_tv.num_shared = 1; - - list_add(&csa_tv.head, &list); - amdgpu_vm_get_pd_bo(vm, &list, &pd); - - r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); - if (r) { - DRM_ERROR("failed to reserve meta data BO: err=%d\n", r); - return r; + drm_exec_init(&exec, false); + drm_exec_while_not_all_locked(&exec) { + r = drm_exec_prepare_obj(&exec, + &ctx_data->meta_data_obj->tbo.base, + 0); + if (likely(!r)) + r = amdgpu_vm_lock_pd(vm, &exec); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) + goto error_fini_exec; } bo_va = amdgpu_vm_bo_add(adev, vm, ctx_data->meta_data_obj); if (!bo_va) { - ttm_eu_backoff_reservation(&ticket, &list); DRM_ERROR("failed to create bo_va for meta data BO\n"); - return -ENOMEM; + r = -ENOMEM; + goto error_fini_exec; } r = amdgpu_vm_bo_map(adev, bo_va, ctx_data->meta_data_gpu_addr, 0, @@ -1163,33 +1159,35 @@ int amdgpu_mes_ctx_map_meta_data(struct amdgpu_device *adev, if (r) { DRM_ERROR("failed to do bo_map on meta data, err=%d\n", r); - goto error; + goto error_del_bo_va; } r = amdgpu_vm_bo_update(adev, bo_va, false); if (r) { DRM_ERROR("failed to do vm_bo_update on meta data\n"); - goto error; + goto error_del_bo_va; } amdgpu_sync_fence(&sync, bo_va->last_pt_update); r = amdgpu_vm_update_pdes(adev, vm, false); if (r) { DRM_ERROR("failed to update pdes on meta data\n"); - goto error; + goto error_del_bo_va; } amdgpu_sync_fence(&sync, vm->last_update); amdgpu_sync_wait(&sync, false); - ttm_eu_backoff_reservation(&ticket, &list); + drm_exec_fini(&exec); amdgpu_sync_free(&sync); ctx_data->meta_data_va = bo_va; return 0; -error: +error_del_bo_va: amdgpu_vm_bo_del(adev, bo_va); - ttm_eu_backoff_reservation(&ticket, &list); + +error_fini_exec: + drm_exec_fini(&exec); amdgpu_sync_free(&sync); return r; } @@ -1200,34 +1198,28 @@ int amdgpu_mes_ctx_unmap_meta_data(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va = ctx_data->meta_data_va; struct amdgpu_bo *bo = ctx_data->meta_data_obj; struct amdgpu_vm *vm = bo_va->base.vm; - struct amdgpu_bo_list_entry vm_pd; - struct list_head list, duplicates; - struct dma_fence *fence = NULL; - struct ttm_validate_buffer tv; - struct ww_acquire_ctx ticket; - long r = 0; - - INIT_LIST_HEAD(&list); - INIT_LIST_HEAD(&duplicates); - - tv.bo = &bo->tbo; - tv.num_shared = 2; - list_add(&tv.head, &list); - - amdgpu_vm_get_pd_bo(vm, &list, &vm_pd); - - r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates); - if (r) { - dev_err(adev->dev, "leaking bo va because " - "we fail to reserve bo (%ld)\n", r); - return r; + struct dma_fence *fence; + struct drm_exec exec; + long r; + + drm_exec_init(&exec, false); + drm_exec_while_not_all_locked(&exec) { + r = drm_exec_prepare_obj(&exec, + &ctx_data->meta_data_obj->tbo.base, + 0); + if (likely(!r)) + r = amdgpu_vm_lock_pd(vm, &exec); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) + goto out_unlock; } amdgpu_vm_bo_del(adev, bo_va); if (!amdgpu_vm_ready(vm)) goto out_unlock; - r = dma_resv_get_singleton(bo->tbo.base.resv, DMA_RESV_USAGE_BOOKKEEP, &fence); + r = dma_resv_get_singleton(bo->tbo.base.resv, DMA_RESV_USAGE_BOOKKEEP, + &fence); if (r) goto out_unlock; if (fence) { @@ -1246,7 +1238,7 @@ int amdgpu_mes_ctx_unmap_meta_data(struct amdgpu_device *adev, out_unlock: if (unlikely(r < 0)) dev_err(adev->dev, "failed to clear page tables (%ld)\n", r); - ttm_eu_backoff_reservation(&ticket, &list); + drm_exec_fini(&exec); return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 286e326bb4bd..e39ecf4152ad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -34,6 +34,7 @@ #include <drm/amdgpu_drm.h> #include <drm/drm_drv.h> #include <drm/ttm/ttm_tt.h> +#include <drm/drm_exec.h> #include "amdgpu.h" #include "amdgpu_trace.h" #include "amdgpu_amdkfd.h" @@ -313,25 +314,16 @@ void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base, } /** - * amdgpu_vm_get_pd_bo - add the VM PD to a validation list + * amdgpu_vm_lock_pd - lock PD in drm_exec * * @vm: vm providing the BOs - * @validated: head of validation list - * @entry: entry to add + * @exec: drm execution context * - * Add the page directory to the list of BOs to - * validate for command submission. + * Lock the VM root PD in the DRM execution context. */ -void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm, - struct list_head *validated, - struct amdgpu_bo_list_entry *entry) +int amdgpu_vm_lock_pd(struct amdgpu_vm *vm, struct drm_exec *exec) { - entry->priority = 0; - entry->tv.bo = &vm->root.bo->tbo; - /* Two for VM updates, one for TTM and one for the CS job */ - entry->tv.num_shared = 4; - entry->user_pages = NULL; - list_add(&entry->tv.head, validated); + return drm_exec_prepare_obj(exec, &vm->root.bo->tbo.base, 4); } /** diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 6f085f0b4ef3..38902fbce8f8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -36,6 +36,8 @@ #include "amdgpu_ring.h" #include "amdgpu_ids.h" +struct drm_exec; + struct amdgpu_bo_va; struct amdgpu_job; struct amdgpu_bo_list_entry; @@ -387,9 +389,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm); int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm); void amdgpu_vm_release_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm); 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); +int amdgpu_vm_lock_pd(struct amdgpu_vm *vm, struct drm_exec *exec); bool amdgpu_vm_ready(struct amdgpu_vm *vm); int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm, int (*callback)(void *p, struct amdgpu_bo *bo), diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index dc6fd6967050..6ca3c3ced9f0 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -24,6 +24,8 @@ #include <linux/types.h> #include <linux/sched/task.h> #include <drm/ttm/ttm_tt.h> +#include <drm/drm_exec.h> + #include "amdgpu_sync.h" #include "amdgpu_object.h" #include "amdgpu_vm.h" @@ -1423,9 +1425,7 @@ struct svm_validate_context { struct svm_range *prange; bool intr; DECLARE_BITMAP(bitmap, MAX_GPU_INSTANCE); - struct ttm_validate_buffer tv[MAX_GPU_INSTANCE]; - struct list_head validate_list; - struct ww_acquire_ctx ticket; + struct drm_exec exec; }; static int svm_range_reserve_bos(struct svm_validate_context *ctx) @@ -1435,25 +1435,23 @@ static int svm_range_reserve_bos(struct svm_validate_context *ctx) uint32_t gpuidx; int r; - INIT_LIST_HEAD(&ctx->validate_list); + drm_exec_init(&ctx->exec, true); for_each_set_bit(gpuidx, ctx->bitmap, MAX_GPU_INSTANCE) { pdd = kfd_process_device_from_gpuidx(ctx->process, gpuidx); if (!pdd) { pr_debug("failed to find device idx %d\n", gpuidx); - return -EINVAL; + r = -EINVAL; + goto unreserve_out; } vm = drm_priv_to_vm(pdd->drm_priv); - ctx->tv[gpuidx].bo = &vm->root.bo->tbo; - ctx->tv[gpuidx].num_shared = 4; - list_add(&ctx->tv[gpuidx].head, &ctx->validate_list); - } - - r = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->validate_list, - ctx->intr, NULL); - if (r) { - pr_debug("failed %d to reserve bo\n", r); - return r; + r = amdgpu_vm_lock_pd(vm, &ctx->exec); + if (unlikely(r == -EDEADLK)) + continue; + if (unlikely(r)) { + pr_debug("failed %d to reserve bo\n", r); + goto unreserve_out; + } } for_each_set_bit(gpuidx, ctx->bitmap, MAX_GPU_INSTANCE) { @@ -1476,13 +1474,13 @@ static int svm_range_reserve_bos(struct svm_validate_context *ctx) return 0; unreserve_out: - ttm_eu_backoff_reservation(&ctx->ticket, &ctx->validate_list); + drm_exec_fini(&ctx->exec); return r; } static void svm_range_unreserve_bos(struct svm_validate_context *ctx) { - ttm_eu_backoff_reservation(&ctx->ticket, &ctx->validate_list); + drm_exec_fini(&ctx->exec); } static void *kfd_svm_page_owner(struct kfd_process *p, int32_t gpuidx) diff --git a/drivers/gpu/drm/drm_exec.c b/drivers/gpu/drm/drm_exec.c new file mode 100644 index 000000000000..f645d22a0863 --- /dev/null +++ b/drivers/gpu/drm/drm_exec.c @@ -0,0 +1,248 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ + +#include <drm/drm_exec.h> +#include <drm/drm_gem.h> +#include <linux/dma-resv.h> + +/** + * DOC: Overview + * + * This component mainly abstracts the retry loop necessary for locking + * multiple GEM objects while preparing hardware operations (e.g. command + * submissions, page table updates etc..). + * + * If a contention is detected while locking a GEM object the cleanup procedure + * unlocks all previously locked GEM objects and locks the contended one first + * before locking any further objects. + * + * After an object is locked fences slots can optionally be reserved on the + * dma_resv object inside the GEM object. + * + * A typical usage pattern should look like this:: + * + * struct drm_gem_object *obj; + * struct drm_exec exec; + * unsigned long index; + * int ret; + * + * drm_exec_init(&exec, true); + * drm_exec_while_not_all_locked(&exec) { + * ret = drm_exec_prepare_obj(&exec, boA, 1); + * drm_exec_continue_on_contention(&exec); + * if (ret) + * goto error; + * + * ret = drm_exec_lock(&exec, boB, 1); + * drm_exec_continue_on_contention(&exec); + * if (ret) + * goto error; + * } + * + * drm_exec_for_each_locked_object(&exec, index, obj) { + * dma_resv_add_fence(obj->resv, fence, DMA_RESV_USAGE_READ); + * ... + * } + * drm_exec_fini(&exec); + * + * See struct dma_exec for more details. + */ + +/* Dummy value used to initially enter the retry loop */ +#define DRM_EXEC_DUMMY (void*)~0 + +/* Unlock all objects and drop references */ +static void drm_exec_unlock_all(struct drm_exec *exec) +{ + struct drm_gem_object *obj; + unsigned long index; + + drm_exec_for_each_locked_object(exec, index, obj) { + dma_resv_unlock(obj->resv); + drm_gem_object_put(obj); + } + + if (exec->prelocked) { + drm_gem_object_put(exec->prelocked); + exec->prelocked = NULL; + } +} + +/** + * drm_exec_init - initialize a drm_exec object + * @exec: the drm_exec object to initialize + * @interruptible: if locks should be acquired interruptible + * + * Initialize the object and make sure that we can track locked and duplicate + * objects. + */ +void drm_exec_init(struct drm_exec *exec, bool interruptible) +{ + exec->interruptible = interruptible; + exec->objects = kmalloc(PAGE_SIZE, GFP_KERNEL); + + /* If allocation here fails, just delay that till the first use */ + exec->max_objects = exec->objects ? PAGE_SIZE / sizeof(void *) : 0; + exec->num_objects = 0; + exec->contended = DRM_EXEC_DUMMY; + exec->prelocked = NULL; +} +EXPORT_SYMBOL(drm_exec_init); + +/** + * drm_exec_fini - finalize a drm_exec object + * @exec: the drm_exec object to finilize + * + * Unlock all locked objects, drop the references to objects and free all memory + * used for tracking the state. + */ +void drm_exec_fini(struct drm_exec *exec) +{ + drm_exec_unlock_all(exec); + kvfree(exec->objects); + if (exec->contended != DRM_EXEC_DUMMY) { + drm_gem_object_put(exec->contended); + ww_acquire_fini(&exec->ticket); + } +} +EXPORT_SYMBOL(drm_exec_fini); + +/** + * drm_exec_cleanup - cleanup when contention is detected + * @exec: the drm_exec object to cleanup + * + * Cleanup the current state and return true if we should stay inside the retry + * loop, false if there wasn't any contention detected and we can keep the + * objects locked. + */ +bool drm_exec_cleanup(struct drm_exec *exec) +{ + if (likely(!exec->contended)) { + ww_acquire_done(&exec->ticket); + return false; + } + + if (likely(exec->contended == DRM_EXEC_DUMMY)) { + exec->contended = NULL; + ww_acquire_init(&exec->ticket, &reservation_ww_class); + return true; + } + + drm_exec_unlock_all(exec); + exec->num_objects = 0; + return true; +} +EXPORT_SYMBOL(drm_exec_cleanup); + +/* Track the locked object in the xa and reserve fences */ +static int drm_exec_obj_locked(struct drm_exec *exec, + struct drm_gem_object *obj) +{ + if (unlikely(exec->num_objects == exec->max_objects)) { + size_t size = exec->max_objects * sizeof(void *); + void *tmp; + + tmp = kvrealloc(exec->objects, size, size + PAGE_SIZE, + GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + exec->objects = tmp; + exec->max_objects += PAGE_SIZE / sizeof(void *); + } + drm_gem_object_get(obj); + exec->objects[exec->num_objects++] = obj; + + return 0; +} + +/* Make sure the contended object is locked first */ +static int drm_exec_lock_contended(struct drm_exec *exec) +{ + struct drm_gem_object *obj = exec->contended; + int ret; + + if (likely(!obj)) + return 0; + + if (exec->interruptible) { + ret = dma_resv_lock_slow_interruptible(obj->resv, + &exec->ticket); + if (unlikely(ret)) + goto error_dropref; + } else { + dma_resv_lock_slow(obj->resv, &exec->ticket); + } + + ret = drm_exec_obj_locked(exec, obj); + if (unlikely(ret)) { + dma_resv_unlock(obj->resv); + goto error_dropref; + } + + swap(exec->prelocked, obj); + +error_dropref: + /* Always cleanup the contention so that error handling can kick in */ + drm_gem_object_put(obj); + exec->contended = NULL; + return ret; +} + +/** + * drm_exec_prepare_obj - prepare a GEM object for use + * @exec: the drm_exec object with the state + * @obj: the GEM object to prepare + * @num_fences: how many fences to reserve + * + * Prepare a GEM object for use by locking it and reserving fence slots. All + * succesfully locked objects are put into the locked container. Duplicates + * detected as well and automatically moved into the duplicates container. + * + * Returns: -EDEADLK if a contention is detected, -ENOMEM when memory + * allocation failed and zero for success. + */ +int drm_exec_prepare_obj(struct drm_exec *exec, struct drm_gem_object *obj, + unsigned int num_fences) +{ + int ret; + + ret = drm_exec_lock_contended(exec); + if (unlikely(ret)) + return ret; + + if (exec->prelocked == obj) { + drm_gem_object_put(exec->prelocked); + exec->prelocked = NULL; + + return dma_resv_reserve_fences(obj->resv, num_fences); + } + + if (exec->interruptible) + ret = dma_resv_lock_interruptible(obj->resv, &exec->ticket); + else + ret = dma_resv_lock(obj->resv, &exec->ticket); + + if (unlikely(ret == -EDEADLK)) { + drm_gem_object_get(obj); + exec->contended = obj; + return -EDEADLK; + } + + if (unlikely(ret)) + return ret; + + ret = drm_exec_obj_locked(exec, obj); + if (ret) + goto error_unlock; + + /* Keep locked when reserving fences fails */ + return dma_resv_reserve_fences(obj->resv, num_fences); + +error_unlock: + dma_resv_unlock(obj->resv); + return ret; +} +EXPORT_SYMBOL(drm_exec_prepare_obj); + +MODULE_DESCRIPTION("DRM execution context"); +MODULE_LICENSE("Dual MIT/GPL"); diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h index ea993d7162e8..3e732648b332 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.h +++ b/drivers/gpu/drm/qxl/qxl_drv.h @@ -38,12 +38,12 @@ #include <drm/drm_crtc.h> #include <drm/drm_encoder.h> +#include <drm/drm_exec.h> #include <drm/drm_gem_ttm_helper.h> #include <drm/drm_ioctl.h> #include <drm/drm_gem.h> #include <drm/qxl_drm.h> #include <drm/ttm/ttm_bo.h> -#include <drm/ttm/ttm_execbuf_util.h> #include <drm/ttm/ttm_placement.h> #include "qxl_dev.h" @@ -101,7 +101,8 @@ struct qxl_gem { }; struct qxl_bo_list { - struct ttm_validate_buffer tv; + struct qxl_bo *bo; + struct list_head list; }; struct qxl_crtc { @@ -151,7 +152,7 @@ struct qxl_release { struct qxl_bo *release_bo; uint32_t release_offset; uint32_t surface_release_id; - struct ww_acquire_ctx ticket; + struct drm_exec exec; struct list_head bos; }; diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 368d26da0d6a..da7cd9cd58f9 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -121,13 +121,11 @@ qxl_release_free_list(struct qxl_release *release) { while (!list_empty(&release->bos)) { struct qxl_bo_list *entry; - struct qxl_bo *bo; entry = container_of(release->bos.next, - struct qxl_bo_list, tv.head); - bo = to_qxl_bo(entry->tv.bo); - qxl_bo_unref(&bo); - list_del(&entry->tv.head); + struct qxl_bo_list, list); + qxl_bo_unref(&entry->bo); + list_del(&entry->list); kfree(entry); } release->release_bo = NULL; @@ -172,8 +170,8 @@ int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo) { struct qxl_bo_list *entry; - list_for_each_entry(entry, &release->bos, tv.head) { - if (entry->tv.bo == &bo->tbo) + list_for_each_entry(entry, &release->bos, list) { + if (entry->bo == bo) return 0; } @@ -182,9 +180,8 @@ int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo) return -ENOMEM; qxl_bo_ref(bo); - entry->tv.bo = &bo->tbo; - entry->tv.num_shared = 0; - list_add_tail(&entry->tv.head, &release->bos); + entry->bo = bo; + list_add_tail(&entry->list, &release->bos); return 0; } @@ -221,21 +218,27 @@ int qxl_release_reserve_list(struct qxl_release *release, bool no_intr) if (list_is_singular(&release->bos)) return 0; - ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos, - !no_intr, NULL); - if (ret) - return ret; - - list_for_each_entry(entry, &release->bos, tv.head) { - struct qxl_bo *bo = to_qxl_bo(entry->tv.bo); - - ret = qxl_release_validate_bo(bo); - if (ret) { - ttm_eu_backoff_reservation(&release->ticket, &release->bos); - return ret; + drm_exec_init(&release->exec, !no_intr); + drm_exec_while_not_all_locked(&release->exec) { + list_for_each_entry(entry, &release->bos, list) { + ret = drm_exec_prepare_obj(&release->exec, + &entry->bo->tbo.base, + 1); + drm_exec_break_on_contention(&release->exec); + if (ret) + goto error; } } + + list_for_each_entry(entry, &release->bos, list) { + ret = qxl_release_validate_bo(entry->bo); + if (ret) + goto error; + } return 0; +error: + drm_exec_fini(&release->exec); + return ret; } void qxl_release_backoff_reserve_list(struct qxl_release *release) @@ -245,7 +248,7 @@ void qxl_release_backoff_reserve_list(struct qxl_release *release) if (list_is_singular(&release->bos)) return; - ttm_eu_backoff_reservation(&release->ticket, &release->bos); + drm_exec_fini(&release->exec); } int qxl_alloc_surface_release_reserved(struct qxl_device *qdev, @@ -404,18 +407,18 @@ void qxl_release_unmap(struct qxl_device *qdev, void qxl_release_fence_buffer_objects(struct qxl_release *release) { - struct ttm_buffer_object *bo; struct ttm_device *bdev; - struct ttm_validate_buffer *entry; + struct qxl_bo_list *entry; struct qxl_device *qdev; + struct qxl_bo *bo; /* if only one object on the release its the release itself since these objects are pinned no need to reserve */ if (list_is_singular(&release->bos) || list_empty(&release->bos)) return; - bo = list_first_entry(&release->bos, struct ttm_validate_buffer, head)->bo; - bdev = bo->bdev; + bo = list_first_entry(&release->bos, struct qxl_bo_list, list)->bo; + bdev = bo->tbo.bdev; qdev = container_of(bdev, struct qxl_device, mman.bdev); /* @@ -426,14 +429,12 @@ void qxl_release_fence_buffer_objects(struct qxl_release *release) release->id | 0xf0000000, release->base.seqno); trace_dma_fence_emit(&release->base); - list_for_each_entry(entry, &release->bos, head) { + list_for_each_entry(entry, &release->bos, list) { bo = entry->bo; - dma_resv_add_fence(bo->base.resv, &release->base, + dma_resv_add_fence(bo->tbo.base.resv, &release->base, DMA_RESV_USAGE_READ); - ttm_bo_move_to_lru_tail_unlocked(bo); - dma_resv_unlock(bo->base.resv); + ttm_bo_move_to_lru_tail_unlocked(&bo->tbo); } - ww_acquire_fini(&release->ticket); + drm_exec_fini(&release->exec); } - diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index d19a4b1c1a8f..5c1305d31adb 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -75,8 +75,8 @@ #include <drm/ttm/ttm_bo.h> #include <drm/ttm/ttm_placement.h> -#include <drm/ttm/ttm_execbuf_util.h> +#include <drm/drm_exec.h> #include <drm/drm_gem.h> #include <drm/drm_audio_component.h> #include <drm/drm_suballoc.h> @@ -458,7 +458,8 @@ struct radeon_mman { struct radeon_bo_list { struct radeon_bo *robj; - struct ttm_validate_buffer tv; + struct list_head list; + bool shared; uint64_t gpu_offset; unsigned preferred_domains; unsigned allowed_domains; @@ -1029,6 +1030,7 @@ struct radeon_cs_parser { struct radeon_bo_list *vm_bos; struct list_head validated; unsigned dma_reloc_idx; + struct drm_exec exec; /* indices of various chunks */ struct radeon_cs_chunk *chunk_ib; struct radeon_cs_chunk *chunk_relocs; @@ -1042,7 +1044,6 @@ struct radeon_cs_parser { u32 cs_flags; u32 ring; s32 priority; - struct ww_acquire_ctx ticket; }; static inline u32 radeon_get_ib_value(struct radeon_cs_parser *p, int idx) diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 46a27ebf4588..5c681a44cec7 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -182,11 +182,8 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) } } - p->relocs[i].tv.bo = &p->relocs[i].robj->tbo; - p->relocs[i].tv.num_shared = !r->write_domain; - - radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head, - priority); + p->relocs[i].shared = !r->write_domain; + radeon_cs_buckets_add(&buckets, &p->relocs[i].list, priority); } radeon_cs_buckets_get_list(&buckets, &p->validated); @@ -197,7 +194,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) if (need_mmap_lock) mmap_read_lock(current->mm); - r = radeon_bo_list_validate(p->rdev, &p->ticket, &p->validated, p->ring); + r = radeon_bo_list_validate(p->rdev, &p->exec, &p->validated, p->ring); if (need_mmap_lock) mmap_read_unlock(current->mm); @@ -253,12 +250,11 @@ static int radeon_cs_sync_rings(struct radeon_cs_parser *p) struct radeon_bo_list *reloc; int r; - list_for_each_entry(reloc, &p->validated, tv.head) { + list_for_each_entry(reloc, &p->validated, list) { struct dma_resv *resv; resv = reloc->robj->tbo.base.resv; - r = radeon_sync_resv(p->rdev, &p->ib.sync, resv, - reloc->tv.num_shared); + r = radeon_sync_resv(p->rdev, &p->ib.sync, resv, reloc->shared); if (r) return r; } @@ -275,6 +271,7 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) s32 priority = 0; INIT_LIST_HEAD(&p->validated); + drm_exec_init(&p->exec, true); if (!cs->num_chunks) { return 0; @@ -396,8 +393,8 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) static int cmp_size_smaller_first(void *priv, const struct list_head *a, const struct list_head *b) { - struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, tv.head); - struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head); + struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, list); + struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, list); /* Sort A before B if A is smaller. */ if (la->robj->tbo.base.size > lb->robj->tbo.base.size) @@ -416,11 +413,13 @@ static int cmp_size_smaller_first(void *priv, const struct list_head *a, * If error is set than unvalidate buffer, otherwise just free memory * used by parsing context. **/ -static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff) +static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error) { unsigned i; if (!error) { + struct radeon_bo_list *reloc; + /* Sort the buffer list from the smallest to largest buffer, * which affects the order of buffers in the LRU list. * This assures that the smallest buffers are added first @@ -432,15 +431,17 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bo * per frame under memory pressure. */ list_sort(NULL, &parser->validated, cmp_size_smaller_first); - - ttm_eu_fence_buffer_objects(&parser->ticket, - &parser->validated, - &parser->ib.fence->base); - } else if (backoff) { - ttm_eu_backoff_reservation(&parser->ticket, - &parser->validated); + list_for_each_entry(reloc, &parser->validated, list) { + dma_resv_add_fence(reloc->robj->tbo.base.resv, + &parser->ib.fence->base, + reloc->shared ? + DMA_RESV_USAGE_READ : + DMA_RESV_USAGE_WRITE); + } } + drm_exec_fini(&parser->exec); + if (parser->relocs != NULL) { for (i = 0; i < parser->nrelocs; i++) { struct radeon_bo *bo = parser->relocs[i].robj; @@ -692,7 +693,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) r = radeon_cs_parser_init(&parser, data); if (r) { DRM_ERROR("Failed to initialize parser !\n"); - radeon_cs_parser_fini(&parser, r, false); + radeon_cs_parser_fini(&parser, r); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; @@ -706,7 +707,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) } if (r) { - radeon_cs_parser_fini(&parser, r, false); + radeon_cs_parser_fini(&parser, r); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; @@ -723,7 +724,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) goto out; } out: - radeon_cs_parser_fini(&parser, r, true); + radeon_cs_parser_fini(&parser, r); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 261fcbae88d7..c67b69b3e4d2 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -625,33 +625,41 @@ int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data, static void radeon_gem_va_update_vm(struct radeon_device *rdev, struct radeon_bo_va *bo_va) { - struct ttm_validate_buffer tv, *entry; - struct radeon_bo_list *vm_bos; - struct ww_acquire_ctx ticket; + struct radeon_bo_list *vm_bos, *entry; struct list_head list; + struct drm_exec exec; unsigned domain; int r; INIT_LIST_HEAD(&list); - tv.bo = &bo_va->bo->tbo; - tv.num_shared = 1; - list_add(&tv.head, &list); - vm_bos = radeon_vm_get_bos(rdev, bo_va->vm, &list); if (!vm_bos) return; - r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); - if (r) - goto error_free; + drm_exec_init(&exec, true); + drm_exec_while_not_all_locked(&exec) { + list_for_each_entry(entry, &list, list) { + r = drm_exec_prepare_obj(&exec, &entry->robj->tbo.base, + 1); + drm_exec_break_on_contention(&exec); + if (unlikely(r)) + goto error_cleanup; + } + drm_exec_continue_on_contention(&exec); - list_for_each_entry(entry, &list, head) { - domain = radeon_mem_type_to_domain(entry->bo->resource->mem_type); + r = drm_exec_prepare_obj(&exec, &bo_va->bo->tbo.base, 1); + drm_exec_continue_on_contention(&exec); + if (unlikely(r)) + goto error_cleanup; + } + + list_for_each_entry(entry, &list, list) { + domain = radeon_mem_type_to_domain(entry->robj->tbo.resource->mem_type); /* if anything is swapped out don't swap it in here, just abort and wait for the next CS */ if (domain == RADEON_GEM_DOMAIN_CPU) - goto error_unreserve; + goto error_cleanup; } mutex_lock(&bo_va->vm->mutex); @@ -665,10 +673,8 @@ static void radeon_gem_va_update_vm(struct radeon_device *rdev, error_unlock: mutex_unlock(&bo_va->vm->mutex); -error_unreserve: - ttm_eu_backoff_reservation(&ticket, &list); - -error_free: +error_cleanup: + drm_exec_fini(&exec); kvfree(vm_bos); if (r && r != -ERESTARTSYS) diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 10c0fbd9d2b4..508a6e9a2dca 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -468,23 +468,26 @@ static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev) } int radeon_bo_list_validate(struct radeon_device *rdev, - struct ww_acquire_ctx *ticket, + struct drm_exec *exec, struct list_head *head, int ring) { struct ttm_operation_ctx ctx = { true, false }; struct radeon_bo_list *lobj; - struct list_head duplicates; - int r; u64 bytes_moved = 0, initial_bytes_moved; u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev); + int r; - INIT_LIST_HEAD(&duplicates); - r = ttm_eu_reserve_buffers(ticket, head, true, &duplicates); - if (unlikely(r != 0)) { - return r; + drm_exec_while_not_all_locked(exec) { + list_for_each_entry(lobj, head, list) { + r = drm_exec_prepare_obj(exec, &lobj->robj->tbo.base, + 1); + drm_exec_break_on_contention(exec); + if (unlikely(r && r != -EALREADY)) + return r; + } } - list_for_each_entry(lobj, head, tv.head) { + list_for_each_entry(lobj, head, list) { struct radeon_bo *bo = lobj->robj; if (!bo->tbo.pin_count) { u32 domain = lobj->preferred_domains; @@ -523,7 +526,6 @@ int radeon_bo_list_validate(struct radeon_device *rdev, domain = lobj->allowed_domains; goto retry; } - ttm_eu_backoff_reservation(ticket, head); return r; } } @@ -531,11 +533,6 @@ int radeon_bo_list_validate(struct radeon_device *rdev, lobj->tiling_flags = bo->tiling_flags; } - list_for_each_entry(lobj, &duplicates, tv.head) { - lobj->gpu_offset = radeon_bo_gpu_offset(lobj->robj); - lobj->tiling_flags = lobj->robj->tiling_flags; - } - return 0; } diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h index 39cc87a59a9a..d7bbb52db546 100644 --- a/drivers/gpu/drm/radeon/radeon_object.h +++ b/drivers/gpu/drm/radeon/radeon_object.h @@ -152,7 +152,7 @@ extern void radeon_bo_force_delete(struct radeon_device *rdev); extern int radeon_bo_init(struct radeon_device *rdev); extern void radeon_bo_fini(struct radeon_device *rdev); extern int radeon_bo_list_validate(struct radeon_device *rdev, - struct ww_acquire_ctx *ticket, + struct drm_exec *exec, struct list_head *head, int ring); extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo, u32 tiling_flags, u32 pitch); diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c index 987cabbf1318..647c4a07d92a 100644 --- a/drivers/gpu/drm/radeon/radeon_vm.c +++ b/drivers/gpu/drm/radeon/radeon_vm.c @@ -142,10 +142,9 @@ struct radeon_bo_list *radeon_vm_get_bos(struct radeon_device *rdev, list[0].robj = vm->page_directory; list[0].preferred_domains = RADEON_GEM_DOMAIN_VRAM; list[0].allowed_domains = RADEON_GEM_DOMAIN_VRAM; - list[0].tv.bo = &vm->page_directory->tbo; - list[0].tv.num_shared = 1; + list[0].shared = true; list[0].tiling_flags = 0; - list_add(&list[0].tv.head, head); + list_add(&list[0].list, head); for (i = 0, idx = 1; i <= vm->max_pde_used; i++) { if (!vm->page_tables[i].bo) @@ -154,10 +153,9 @@ struct radeon_bo_list *radeon_vm_get_bos(struct radeon_device *rdev, list[idx].robj = vm->page_tables[i].bo; list[idx].preferred_domains = RADEON_GEM_DOMAIN_VRAM; list[idx].allowed_domains = RADEON_GEM_DOMAIN_VRAM; - list[idx].tv.bo = &list[idx].robj->tbo; - list[idx].tv.num_shared = 1; + list[idx].shared = true; list[idx].tiling_flags = 0; - list_add(&list[idx++].tv.head, head); + list_add(&list[idx++].list, head); } return list; diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index bca726a8f483..ba7baa622675 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \ drm_modes_test.o \ drm_plane_helper_test.o \ drm_probe_helper_test.o \ - drm_rect_test.o + drm_rect_test.o \ + drm_exec_test.o CFLAGS_drm_mm_test.o := $(DISABLE_STRUCTLEAK_PLUGIN) diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c new file mode 100644 index 000000000000..78eb61eb27cc --- /dev/null +++ b/drivers/gpu/drm/tests/drm_exec_test.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2019 Intel Corporation + */ + +#define pr_fmt(fmt) "drm_exec: " fmt + +#include <kunit/test.h> + +#include <linux/module.h> +#include <linux/prime_numbers.h> + +#include <drm/drm_exec.h> +#include <drm/drm_device.h> +#include <drm/drm_gem.h> + +#include "../lib/drm_random.h" + +static struct drm_device dev; + +static void drm_exec_sanitycheck(struct kunit *test) +{ + struct drm_exec exec; + + drm_exec_init(&exec, true); + drm_exec_fini(&exec); + pr_info("%s - ok!\n", __func__); +} + +static void drm_exec_lock1(struct kunit *test) +{ + struct drm_gem_object gobj = { }; + struct drm_exec exec; + int ret; + + drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE); + + drm_exec_init(&exec, true); + drm_exec_while_not_all_locked(&exec) { + ret = drm_exec_prepare_obj(&exec, &gobj, 1); + drm_exec_continue_on_contention(&exec); + if (ret) { + drm_exec_fini(&exec); + pr_err("%s - err %d!\n", __func__, ret); + return; + } + } + drm_exec_fini(&exec); + pr_info("%s - ok!\n", __func__); +} + +static int drm_exec_suite_init(struct kunit_suite *suite) +{ + kunit_info(suite, "Testing DRM exec manager\n"); + return 0; +} + +static struct kunit_case drm_exec_tests[] = { + KUNIT_CASE(drm_exec_sanitycheck), + KUNIT_CASE(drm_exec_lock1), + {} +}; + +static struct kunit_suite drm_exec_test_suite = { + .name = "drm_exec", + .suite_init = drm_exec_suite_init, + .test_cases = drm_exec_tests, +}; + +kunit_test_suite(drm_exec_test_suite); + +MODULE_AUTHOR("AMD"); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile index f906b22959cf..b05a8477d0d0 100644 --- a/drivers/gpu/drm/ttm/Makefile +++ b/drivers/gpu/drm/ttm/Makefile @@ -3,8 +3,8 @@ # Makefile for the drm device driver. This driver provides support for the ttm-y := ttm_tt.o ttm_bo.o ttm_bo_util.o ttm_bo_vm.o ttm_module.o \ - ttm_execbuf_util.o ttm_range_manager.o ttm_resource.o ttm_pool.o \ - ttm_device.o ttm_sys_manager.o + ttm_range_manager.o ttm_resource.o ttm_pool.o ttm_device.o \ + ttm_sys_manager.o ttm-$(CONFIG_AGP) += ttm_agp_backend.o obj-$(CONFIG_DRM_TTM) += ttm.o diff --git a/drivers/gpu/drm/vmwgfx/Makefile b/drivers/gpu/drm/vmwgfx/Makefile index e94479d9cd5b..e30e10e25c53 100644 --- a/drivers/gpu/drm/vmwgfx/Makefile +++ b/drivers/gpu/drm/vmwgfx/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \ - vmwgfx_ioctl.o vmwgfx_resource.o vmwgfx_ttm_buffer.o \ + vmwgfx_ioctl.o vmwgfx_resource.o vmwgfx_ttm_buffer.o ttm_execbuf_util.o \ vmwgfx_cmd.o vmwgfx_irq.o vmwgfx_ldu.o \ vmwgfx_overlay.o vmwgfx_gmrid_manager.o vmwgfx_fence.o \ vmwgfx_bo.o vmwgfx_scrn.o vmwgfx_context.o \ diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/vmwgfx/ttm_execbuf_util.c similarity index 97% rename from drivers/gpu/drm/ttm/ttm_execbuf_util.c rename to drivers/gpu/drm/vmwgfx/ttm_execbuf_util.c index f1c60fa80c2d..5e4e28899acd 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/vmwgfx/ttm_execbuf_util.c @@ -26,8 +26,13 @@ * **************************************************************************/ -#include <drm/ttm/ttm_execbuf_util.h> #include <drm/ttm/ttm_bo.h> +#include <drm/ttm/ttm_placement.h> +#include <linux/wait.h> +#include <linux/sched.h> +#include <linux/module.h> + +#include "ttm_execbuf_util.h" static void ttm_eu_backoff_reservation_reverse(struct list_head *list, struct ttm_validate_buffer *entry) diff --git a/include/drm/ttm/ttm_execbuf_util.h b/drivers/gpu/drm/vmwgfx/ttm_execbuf_util.h similarity index 100% rename from include/drm/ttm/ttm_execbuf_util.h rename to drivers/gpu/drm/vmwgfx/ttm_execbuf_util.h diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index fb8f0c0642c0..49e3dd8c04ec 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -37,11 +37,11 @@ #include <drm/drm_file.h> #include <drm/drm_rect.h> -#include <drm/ttm/ttm_execbuf_util.h> #include <drm/ttm/ttm_tt.h> #include <drm/ttm/ttm_placement.h> #include <drm/ttm/ttm_bo.h> +#include "ttm_execbuf_util.h" #include "ttm_object.h" #include "vmwgfx_fence.h" diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h index 240ee0c4ebfd..927fc8afdbfe 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h @@ -32,7 +32,7 @@ #include <linux/hashtable.h> #include <linux/ww_mutex.h> -#include <drm/ttm/ttm_execbuf_util.h> +#include "ttm_execbuf_util.h" #define VMW_RES_DIRTY_NONE 0 #define VMW_RES_DIRTY_SET BIT(0) diff --git a/include/drm/drm_exec.h b/include/drm/drm_exec.h new file mode 100644 index 000000000000..65e518c01db3 --- /dev/null +++ b/include/drm/drm_exec.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ + +#ifndef __DRM_EXEC_H__ +#define __DRM_EXEC_H__ + +#include <linux/ww_mutex.h> + +struct drm_gem_object; + +/** + * struct drm_exec - Execution context + */ +struct drm_exec { + /** + * @interruptible: If locks should be taken interruptible + */ + bool interruptible; + + /** + * @ticket: WW ticket used for acquiring locks + */ + struct ww_acquire_ctx ticket; + + /** + * @num_objects: number of objects locked + */ + unsigned int num_objects; + + /** + * @max_objects: maximum objects in array + */ + unsigned int max_objects; + + /** + * @objects: array of the locked objects + */ + struct drm_gem_object **objects; + + /** + * @contended: contended GEM object we backet of for + */ + struct drm_gem_object *contended; + + /** + * @prelocked: already locked GEM object because of contention + */ + struct drm_gem_object *prelocked; +}; + +/** + * drm_exec_for_each_locked_object - iterate over all the locked objects + * @exec: drm_exec object + * @index: unsigned long index for the iteration + * @obj: the current GEM object + * + * Iterate over all the locked GEM objects inside the drm_exec object. + */ +#define drm_exec_for_each_locked_object(exec, index, obj) \ + for (index = 0, obj = (exec)->objects[0]; \ + index < (exec)->num_objects; \ + ++index, obj = (exec)->objects[index]) + +/** + * drm_exec_while_not_all_locked - loop until all GEM objects are prepared + * @exec: drm_exec object + * + * Core functionality of the drm_exec object. Loops until all GEM objects are + * prepared and no more contention exists. + * + * At the beginning of the loop it is guaranteed that no GEM object is locked. + */ +#define drm_exec_while_not_all_locked(exec) \ + while (drm_exec_cleanup(exec)) + +/** + * drm_exec_continue_on_contention - continue the loop when we need to cleanup + * @exec: drm_exec object + * + * Control flow helper to continue when a contention was detected and we need to + * clean up and re-start the loop to prepare all GEM objects. + */ +#define drm_exec_continue_on_contention(exec) \ + if (unlikely(drm_exec_is_contended(exec))) \ + continue + +/** + * drm_exec_break_on_contention - break a subordinal loop on contention + * @exec: drm_exec object + * + * Control flow helper to break a subordinal loop when a contention was detected + * and we need to clean up and re-start the loop to prepare all GEM objects. + */ +#define drm_exec_break_on_contention(exec) \ + if (unlikely(drm_exec_is_contended(exec))) \ + break + +/** + * drm_exec_is_contended - check for contention + * @exec: drm_exec object + * + * Returns true if the drm_exec object has run into some contention while + * locking a GEM object and needs to clean up. + */ +static inline bool drm_exec_is_contended(struct drm_exec *exec) +{ + return !!exec->contended; +} + +void drm_exec_init(struct drm_exec *exec, bool interruptible); +void drm_exec_fini(struct drm_exec *exec); +bool drm_exec_cleanup(struct drm_exec *exec); +int drm_exec_prepare_obj(struct drm_exec *exec, struct drm_gem_object *obj, + unsigned int num_fences); + +#endif -- 2.25.1
