From 5dca122f8388695b1048a48a69d3cf9210036d9a Mon Sep 17 00:00:00 2001 From: Ashutosh Dixit Date: Mon, 18 Jul 2022 18:07:07 -0700 Subject: [PATCH] drm/i915/gt: Create gt/gtN/.defaults/ for per gt sysfs defaults Create a gt/gtN/.defaults/ directory (similar to engine//.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 Cc: Andi Shyti Signed-off-by: Ashutosh Dixit Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/be7c30d0ae58be9d8d5b8242ba00a1b2825e63ad.1658192398.git.ashutosh.dixit@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(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c index 9e4ebf53379b..6447c0376dbd 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c @@ -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 @@ exit_fail: void intel_gt_sysfs_unregister(struct intel_gt *gt) { + kobject_put(gt->sysfs_defaults); kobject_put(>->sysfs_gt); } diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h index df708802889d..92839b9adb12 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h @@ -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 {