@@ -101,6 +101,10 @@ void intel_gt_sysfs_register(struct intel_gt *gt)
gt->i915->sysfs_gt, "gt%d", gt->info.id))
goto exit_fail;
+ gt->sysfs_defaults = kobject_create_and_add(".defaults", >->sysfs_gt);
+ if (!gt->sysfs_defaults)
+ goto exit_fail;
+
intel_gt_sysfs_pm_init(gt, >->sysfs_gt);
return;
@@ -113,5 +117,6 @@ void intel_gt_sysfs_register(struct intel_gt *gt)
void intel_gt_sysfs_unregister(struct intel_gt *gt)
{
+ kobject_put(gt->sysfs_defaults);
kobject_put(>->sysfs_gt);
}
@@ -68,6 +68,9 @@ enum intel_submission_method {
INTEL_SUBMISSION_GUC,
};
+struct gt_defaults {
+};
+
struct intel_gt {
struct drm_i915_private *i915;
struct intel_uncore *uncore;
@@ -228,6 +231,10 @@ struct intel_gt {
/* gt/gtN sysfs */
struct kobject sysfs_gt;
+
+ /* sysfs defaults per gt */
+ struct gt_defaults defaults;
+ struct kobject *sysfs_defaults;
};
enum intel_gt_scratch_field {
Create a gt/gtN/.defaults directory (similar to engine/<engine-name>/.defaults) to expose default parameter values for each gt in sysfs. This allows userspace to restore default parameter values after they have changed. The empty 'struct gt_defaults' will be populated by subsequent patches. v2: Changed 'struct intel_rps_defaults rps_defaults' to 'struct gt_defaults defaults' (Andi) Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> --- drivers/gpu/drm/i915/gt/intel_gt_sysfs.c | 5 +++++ drivers/gpu/drm/i915/gt/intel_gt_types.h | 7 +++++++ 2 files changed, 12 insertions(+)