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drm/amdgpu: Add debug bit for userptr usage

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In VM debug mode, it is desirable to notify the application
to correct the freeing sequence by unmapping the memory before
destroying the userptr in the old userptr path. Add a bitmask
to decide whether to send gpu vm fault to the applition.

Signed-off-by: Shane Xiao <shane.xiao@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Shane Xiao
2025-04-24 13:15:01 +08:00
committed by Alex Deucher
parent def41146b9
commit 8e320f67d4
2 changed files with 6 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@@ -143,6 +143,7 @@ enum AMDGPU_DEBUG_MASK {
AMDGPU_DEBUG_ENABLE_EXP_RESETS = BIT(5),
AMDGPU_DEBUG_DISABLE_GPU_RING_RESET = BIT(6),
AMDGPU_DEBUG_SMU_POOL = BIT(7),
AMDGPU_DEBUG_VM_USERPTR = BIT(8),
};
unsigned int amdgpu_vram_limit = UINT_MAX;
@@ -2273,6 +2274,10 @@ static void amdgpu_init_debug_options(struct amdgpu_device *adev)
pr_info("debug: use vram for smu pool\n");
adev->pm.smu_debug_mask |= SMU_DEBUG_POOL_USE_VRAM;
}
if (amdgpu_debug_mask & AMDGPU_DEBUG_VM_USERPTR) {
pr_info("debug: VM mode debug for userptr is enabled\n");
adev->debug_vm_userptr = true;
}
}
static unsigned long amdgpu_fix_asic_type(struct pci_dev *pdev, unsigned long flags)