Commit f90556a4 authored Oct 29, 2025 by Lucas De Marchi

drm/xe/gt_throttle: Tidy up perf reasons reading

There's no need to be so verbose with two functions per bit:
read_reason_xxxxx() and reason_xxxxx_show(). Drop the former and just
use a new is_throttled_by() that receives the mask as parameter.

Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://patch.msgid.link/20251029-gt-throttle-cri-v3-2-d1f5abbb8114@intel.com

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

parent 59ab71d3

drivers/gpu/drm/xe/xe_gt_throttle.c

+21 −161

Original line number	Diff line number	Diff line
		@@ -85,130 +85,9 @@ static u32 read_status(struct xe_gt *gt)
		return status;
		}

		static u32 read_reason_pl1(struct xe_gt *gt)
		static bool is_throttled_by(struct xe_gt *gt, u32 mask)
		{
		u32 pl1 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_1_MASK;

		return pl1;
		}

		static u32 read_reason_pl2(struct xe_gt *gt)
		{
		u32 pl2 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_2_MASK;

		return pl2;
		}

		static u32 read_reason_pl4(struct xe_gt *gt)
		{
		u32 pl4 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_4_MASK;

		return pl4;
		}

		static u32 read_reason_thermal(struct xe_gt *gt)
		{
		u32 thermal = xe_gt_throttle_get_limit_reasons(gt) & THERMAL_LIMIT_MASK;

		return thermal;
		}

		static u32 read_reason_soc_thermal(struct xe_gt *gt)
		{
		u32 thermal = xe_gt_throttle_get_limit_reasons(gt) & SOC_THERMAL_LIMIT_MASK;

		return thermal;
		}

		static u32 read_reason_prochot(struct xe_gt *gt)
		{
		u32 prochot = xe_gt_throttle_get_limit_reasons(gt) & PROCHOT_MASK;

		return prochot;
		}

		static u32 read_reason_ratl(struct xe_gt *gt)
		{
		u32 ratl = xe_gt_throttle_get_limit_reasons(gt) & RATL_MASK;

		return ratl;
		}

		static u32 read_reason_vr_thermalert(struct xe_gt *gt)
		{
		u32 thermalert = xe_gt_throttle_get_limit_reasons(gt) & VR_THERMALERT_MASK;

		return thermalert;
		}

		static u32 read_reason_soc_avg_thermal(struct xe_gt *gt)
		{
		u32 soc_avg_thermal = xe_gt_throttle_get_limit_reasons(gt) & SOC_AVG_THERMAL_MASK;

		return soc_avg_thermal;
		}

		static u32 read_reason_vr_tdc(struct xe_gt *gt)
		{
		u32 tdc = xe_gt_throttle_get_limit_reasons(gt) & VR_TDC_MASK;

		return tdc;
		}

		static u32 read_reason_fastvmode(struct xe_gt *gt)
		{
		u32 fastvmode = xe_gt_throttle_get_limit_reasons(gt) & FASTVMODE_MASK;

		return fastvmode;
		}

		static u32 read_reason_mem_thermal(struct xe_gt *gt)
		{
		u32 mem_thermal = xe_gt_throttle_get_limit_reasons(gt) & MEM_THERMAL_MASK;

		return mem_thermal;
		}

		static u32 read_reason_vr_thermal(struct xe_gt *gt)
		{
		u32 vr_thermal = xe_gt_throttle_get_limit_reasons(gt) & VR_THERMAL_MASK;

		return vr_thermal;
		}

		static u32 read_reason_iccmax(struct xe_gt *gt)
		{
		u32 iccmax = xe_gt_throttle_get_limit_reasons(gt) & ICCMAX_MASK;

		return iccmax;
		}

		static u32 read_reason_psys_pl1(struct xe_gt *gt)
		{
		u32 psys_pl1 = xe_gt_throttle_get_limit_reasons(gt) & PSYS_PL1_MASK;

		return psys_pl1;
		}

		static u32 read_reason_psys_pl2(struct xe_gt *gt)
		{
		u32 psys_pl2 = xe_gt_throttle_get_limit_reasons(gt) & PSYS_PL2_MASK;

		return psys_pl2;
		}

		static u32 read_reason_p0_freq(struct xe_gt *gt)
		{
		u32 p0_freq = xe_gt_throttle_get_limit_reasons(gt) & P0_FREQ_MASK;

		return p0_freq;
		}

		static u32 read_reason_psys_crit(struct xe_gt *gt)
		{
		u32 psys_crit = xe_gt_throttle_get_limit_reasons(gt) & PSYS_CRIT_MASK;

		return psys_crit;
		return xe_gt_throttle_get_limit_reasons(gt) & mask;
		}

		static ssize_t status_show(struct kobject *kobj,
		@@ -216,9 +95,8 @@ static ssize_t status_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool status = !!read_status(gt);

		return sysfs_emit(buff, "%u\n", status);
		return sysfs_emit(buff, "%u\n", !!read_status(gt));
		}
		static struct kobj_attribute attr_status = __ATTR_RO(status);

		@@ -227,9 +105,8 @@ static ssize_t reason_pl1_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool pl1 = !!read_reason_pl1(gt);

		return sysfs_emit(buff, "%u\n", pl1);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, POWER_LIMIT_1_MASK));
		}
		static struct kobj_attribute attr_reason_pl1 = __ATTR_RO(reason_pl1);

		@@ -238,9 +115,8 @@ static ssize_t reason_pl2_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool pl2 = !!read_reason_pl2(gt);

		return sysfs_emit(buff, "%u\n", pl2);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, POWER_LIMIT_2_MASK));
		}
		static struct kobj_attribute attr_reason_pl2 = __ATTR_RO(reason_pl2);

		@@ -249,9 +125,8 @@ static ssize_t reason_pl4_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool pl4 = !!read_reason_pl4(gt);

		return sysfs_emit(buff, "%u\n", pl4);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, POWER_LIMIT_4_MASK));
		}
		static struct kobj_attribute attr_reason_pl4 = __ATTR_RO(reason_pl4);

		@@ -260,9 +135,8 @@ static ssize_t reason_thermal_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool thermal = !!read_reason_thermal(gt);

		return sysfs_emit(buff, "%u\n", thermal);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, THERMAL_LIMIT_MASK));
		}
		static struct kobj_attribute attr_reason_thermal = __ATTR_RO(reason_thermal);

		@@ -271,9 +145,8 @@ static ssize_t reason_soc_thermal_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool thermal = !!read_reason_soc_thermal(gt);

		return sysfs_emit(buff, "%u\n", thermal);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, SOC_THERMAL_LIMIT_MASK));
		}
		static struct kobj_attribute attr_reason_soc_thermal = __ATTR_RO(reason_soc_thermal);

		@@ -282,9 +155,8 @@ static ssize_t reason_prochot_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool prochot = !!read_reason_prochot(gt);

		return sysfs_emit(buff, "%u\n", prochot);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, PROCHOT_MASK));
		}
		static struct kobj_attribute attr_reason_prochot = __ATTR_RO(reason_prochot);

		@@ -293,9 +165,8 @@ static ssize_t reason_ratl_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool ratl = !!read_reason_ratl(gt);

		return sysfs_emit(buff, "%u\n", ratl);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, RATL_MASK));
		}
		static struct kobj_attribute attr_reason_ratl = __ATTR_RO(reason_ratl);

		@@ -304,9 +175,8 @@ static ssize_t reason_vr_thermalert_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool thermalert = !!read_reason_vr_thermalert(gt);

		return sysfs_emit(buff, "%u\n", thermalert);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, VR_THERMALERT_MASK));
		}
		static struct kobj_attribute attr_reason_vr_thermalert = __ATTR_RO(reason_vr_thermalert);

		@@ -315,9 +185,8 @@ static ssize_t reason_soc_avg_thermal_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool avg_thermalert = !!read_reason_soc_avg_thermal(gt);

		return sysfs_emit(buff, "%u\n", avg_thermalert);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, SOC_AVG_THERMAL_MASK));
		}
		static struct kobj_attribute attr_reason_soc_avg_thermal = __ATTR_RO(reason_soc_avg_thermal);

		@@ -326,9 +195,8 @@ static ssize_t reason_vr_tdc_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool tdc = !!read_reason_vr_tdc(gt);

		return sysfs_emit(buff, "%u\n", tdc);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, VR_TDC_MASK));
		}
		static struct kobj_attribute attr_reason_vr_tdc = __ATTR_RO(reason_vr_tdc);

		@@ -337,9 +205,8 @@ static ssize_t reason_fastvmode_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool fastvmode = !!read_reason_fastvmode(gt);

		return sysfs_emit(buff, "%u\n", fastvmode);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, FASTVMODE_MASK));
		}
		static struct kobj_attribute attr_reason_fastvmode = __ATTR_RO(reason_fastvmode);

		@@ -348,9 +215,8 @@ static ssize_t reason_mem_thermal_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool mem_thermal = !!read_reason_mem_thermal(gt);

		return sysfs_emit(buff, "%u\n", mem_thermal);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, MEM_THERMAL_MASK));
		}
		static struct kobj_attribute attr_reason_mem_thermal = __ATTR_RO(reason_mem_thermal);

		@@ -359,9 +225,8 @@ static ssize_t reason_vr_thermal_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool vr_thermal = !!read_reason_vr_thermal(gt);

		return sysfs_emit(buff, "%u\n", vr_thermal);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, VR_THERMAL_MASK));
		}
		static struct kobj_attribute attr_reason_vr_thermal = __ATTR_RO(reason_vr_thermal);

		@@ -370,9 +235,8 @@ static ssize_t reason_iccmax_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool iccmax = !!read_reason_iccmax(gt);

		return sysfs_emit(buff, "%u\n", iccmax);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, ICCMAX_MASK));
		}
		static struct kobj_attribute attr_reason_iccmax = __ATTR_RO(reason_iccmax);

		@@ -381,9 +245,8 @@ static ssize_t reason_psys_pl1_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool psys_pl1 = !!read_reason_psys_pl1(gt);

		return sysfs_emit(buff, "%u\n", psys_pl1);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, PSYS_PL1_MASK));
		}
		static struct kobj_attribute attr_reason_psys_pl1 = __ATTR_RO(reason_psys_pl1);

		@@ -392,9 +255,8 @@ static ssize_t reason_psys_pl2_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool psys_pl2 = !!read_reason_psys_pl2(gt);

		return sysfs_emit(buff, "%u\n", psys_pl2);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, PSYS_PL2_MASK));
		}
		static struct kobj_attribute attr_reason_psys_pl2 = __ATTR_RO(reason_psys_pl2);

		@@ -403,9 +265,8 @@ static ssize_t reason_p0_freq_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool p0_freq = !!read_reason_p0_freq(gt);

		return sysfs_emit(buff, "%u\n", p0_freq);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, P0_FREQ_MASK));
		}
		static struct kobj_attribute attr_reason_p0_freq = __ATTR_RO(reason_p0_freq);

		@@ -414,9 +275,8 @@ static ssize_t reason_psys_crit_show(struct kobject *kobj,
		{
		struct device *dev = kobj_to_dev(kobj);
		struct xe_gt *gt = dev_to_gt(dev);
		bool psys_crit = !!read_reason_psys_crit(gt);

		return sysfs_emit(buff, "%u\n", psys_crit);
		return sysfs_emit(buff, "%u\n", is_throttled_by(gt, PSYS_CRIT_MASK));
		}
		static struct kobj_attribute attr_reason_psys_crit = __ATTR_RO(reason_psys_crit);