diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 96842b041372..6378926f1aeb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -382,6 +382,24 @@ static const struct attribute_group amdgpu_board_attrs_group = { .is_visible = amdgpu_board_attrs_is_visible }; +/** + * DOC: uma/carveout_options + * + * This is a read-only file that lists all available UMA allocation + * options and their corresponding indices. Example output:: + * + * $ cat uma/carveout_options + * 0: Minimum (512 MB) + * 1: (1 GB) + * 2: (2 GB) + * 3: (4 GB) + * 4: (6 GB) + * 5: (8 GB) + * 6: (12 GB) + * 7: Medium (16 GB) + * 8: (24 GB) + * 9: High (32 GB) + */ static ssize_t carveout_options_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -414,6 +432,17 @@ static ssize_t carveout_options_show(struct device *dev, } static DEVICE_ATTR_RO(carveout_options); +/** + * DOC: uma/carveout + * + * This file is both readable and writable. When read, it shows the + * index of the current setting. Writing a valid index to this file + * allows users to change the UMA carveout size to the selected option + * on the next boot. + * + * The available options and their corresponding indices can be read + * from the uma/carveout_options file. + */ static ssize_t carveout_show(struct device *dev, struct device_attribute *attr, char *buf) |