diff options
| author | Ramesh Errabolu <Ramesh.Errabolu@amd.com> | 2024-08-20 16:05:30 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-09-06 17:55:05 -0400 |
| commit | 01be2b62c0f3c66832472ed3e48e61d631094606 (patch) | |
| tree | 4ba6c496b77922e5285fc5d802532dd1044e6455 /drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | |
| parent | e8397d327e7b0d6132197c9d8fd7977f84f3dbd9 (diff) | |
drm/amdgpu: Surface svm_default_granularity, a RW module parameter
Enables users to update SVM's default granularity, used in
buffer migration and handling of recoverable page faults.
Param value is set in terms of log(numPages(buffer)),
e.g. 9 for a 2 MIB buffer
Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 8dee7c62c801..86cff30d5c4e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -169,6 +169,16 @@ uint amdgpu_sdma_phase_quantum = 32; char *amdgpu_disable_cu; char *amdgpu_virtual_display; bool enforce_isolation; + +/* Specifies the default granularity for SVM, used in buffer + * migration and restoration of backing memory when handling + * recoverable page faults. + * + * The value is given as log(numPages(buffer)); for a 2 MiB + * buffer it computes to be 9 + */ +uint amdgpu_svm_default_granularity = 9; + /* * OverDrive(bit 14) disabled by default * GFX DCS(bit 19) disabled by default @@ -321,6 +331,13 @@ MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)"); module_param_named(msi, amdgpu_msi, int, 0444); /** + * DOC: svm_default_granularity (uint) + * Used in buffer migration and handling of recoverable page faults + */ +MODULE_PARM_DESC(svm_default_granularity, "SVM's default granularity in log(2^Pages), default 9 = 2^9 = 2 MiB"); +module_param_named(svm_default_granularity, amdgpu_svm_default_granularity, uint, 0644); + +/** * DOC: lockup_timeout (string) * Set GPU scheduler timeout value in ms. * |