From e2ad8e2df432498b1cee2af04df605723f4d75e6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Mon, 5 Jun 2023 11:11:21 +0200 Subject: [PATCH] drm/amdgpu: make sure BOs are locked in amdgpu_vm_get_memory MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We need to grab the lock of the BO or otherwise can run into a crash when we try to inspect the current location. Signed-off-by: Christian König Reviewed-by: Alex Deucher Acked-by: Guchun Chen Tested-by: Mikhail Gavrilov Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 69 +++++++++++++++++++--------------- 1 file changed, 39 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index dc80c9c..5dcc800 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -920,42 +920,51 @@ error_unlock: return r; } +static void amdgpu_vm_bo_get_memory(struct amdgpu_bo_va *bo_va, + struct amdgpu_mem_stats *stats) +{ + struct amdgpu_vm *vm = bo_va->base.vm; + struct amdgpu_bo *bo = bo_va->base.bo; + + if (!bo) + return; + + /* + * For now ignore BOs which are currently locked and potentially + * changing their location. + */ + if (bo->tbo.base.resv != vm->root.bo->tbo.base.resv && + !dma_resv_trylock(bo->tbo.base.resv)) + return; + + amdgpu_bo_get_memory(bo, stats); + if (bo->tbo.base.resv != vm->root.bo->tbo.base.resv) + dma_resv_unlock(bo->tbo.base.resv); +} + void amdgpu_vm_get_memory(struct amdgpu_vm *vm, struct amdgpu_mem_stats *stats) { struct amdgpu_bo_va *bo_va, *tmp; spin_lock(&vm->status_lock); - list_for_each_entry_safe(bo_va, tmp, &vm->idle, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } - list_for_each_entry_safe(bo_va, tmp, &vm->evicted, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } - list_for_each_entry_safe(bo_va, tmp, &vm->relocated, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } - list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } - list_for_each_entry_safe(bo_va, tmp, &vm->invalidated, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } - list_for_each_entry_safe(bo_va, tmp, &vm->done, base.vm_status) { - if (!bo_va->base.bo) - continue; - amdgpu_bo_get_memory(bo_va->base.bo, stats); - } + list_for_each_entry_safe(bo_va, tmp, &vm->idle, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); + + list_for_each_entry_safe(bo_va, tmp, &vm->evicted, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); + + list_for_each_entry_safe(bo_va, tmp, &vm->relocated, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); + + list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); + + list_for_each_entry_safe(bo_va, tmp, &vm->invalidated, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); + + list_for_each_entry_safe(bo_va, tmp, &vm->done, base.vm_status) + amdgpu_vm_bo_get_memory(bo_va, stats); spin_unlock(&vm->status_lock); } -- 2.7.4