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drm/i915/gt: Create gt/gtN/.defaults/ for per gt sysfs defaults

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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>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/be7c30d0ae58be9d8d5b8242ba00a1b2825e63ad.1658192398.git.ashutosh.dixit@intel.com
This commit is contained in:
Ashutosh Dixit 2022-07-18 18:07:07 -07:00 committed by Rodrigo Vivi
parent 1dab4561a3
commit 5dca122f83
2 changed files with 12 additions and 0 deletions
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5
drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
View File

@ -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", &gt->sysfs_gt);
if (!gt->sysfs_defaults)
goto exit_fail;
intel_gt_sysfs_pm_init(gt, &gt->sysfs_gt);
return;
@ -113,5 +117,6 @@ exit_fail:
void intel_gt_sysfs_unregister(struct intel_gt *gt)
{
kobject_put(gt->sysfs_defaults);
kobject_put(&gt->sysfs_gt);
}

7
drivers/gpu/drm/i915/gt/intel_gt_types.h
View File

@ -75,6 +75,9 @@ enum intel_submission_method {
INTEL_SUBMISSION_GUC,
};
struct gt_defaults {
};
struct intel_gt {
struct drm_i915_private *i915;
struct intel_uncore *uncore;
@ -235,6 +238,10 @@ 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 {