Merge branches 'powercap', 'pm-domains', 'pm-em' and 'pm-opp'

Merge updates of the powercap framework, generic PM domains, Energy
Model and operating performance points for 6.3-rc1:

 - Fix possible name leak in powercap_register_zone() (Yang Yingliang).

 - Add Meteor Lake and Emerald Rapids support to the intel_rapl power
   capping driver (Zhang Rui).

 - Modify the idle_inject power capping facility to support 100% idle
   injection (Srinivas Pandruvada).

 - Fix large time windows handling in the intel_rapl power capping
   driver (Zhang Rui).

 - Fix memory leaks with using debugfs_lookup() in the generic PM
   domains and Energy Model code (Greg Kroah-Hartman).

 - Add missing 'cache-unified' property in example for kryo OPP bindings
   (Rob Herring).

 - Fix error checking in opp_migrate_dentry() (Qi Zheng).

 - Remove "select SRCU" (Paul E. McKenney).

 - Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad
   Dybcio).

* powercap:
  powercap: intel_rapl: Fix handling for large time window
  powercap: idle_inject: Support 100% idle injection
  powercap: intel_rapl: add support for Emerald Rapids
  powercap: intel_rapl: add support for Meteor Lake
  powercap: fix possible name leak in powercap_register_zone()

* pm-domains:
  PM: domains: fix memory leak with using debugfs_lookup()

* pm-em:
  PM: EM: fix memory leak with using debugfs_lookup()

* pm-opp:
  OPP: fix error checking in opp_migrate_dentry()
  dt-bindings: opp: v2-qcom-level: Let qcom,opp-fuse-level be a 2-long array
  drivers/opp: Remove "select SRCU"
  dt-bindings: opp: opp-v2-kryo-cpu: Add missing 'cache-unified' property in example

Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml

@@ -116,6 +116,7 @@ examples:
                 L2_0: l2-cache {
                     compatible = "cache";
                     cache-level = <2>;
+                    cache-unified;
                 };
             };
 
@@ -150,6 +151,7 @@ examples:
                 L2_1: l2-cache {
                     compatible = "cache";
                     cache-level = <2>;
+                    cache-unified;
                 };
             };
 

Documentation/devicetree/bindings/opp/opp-v2-qcom-level.yaml

@@ -30,7 +30,9 @@ patternProperties:
           this OPP node. Sometimes several corners/levels shares a certain fuse
           corner/level. A fuse corner/level contains e.g. ref uV, min uV,
           and max uV.
-        $ref: /schemas/types.yaml#/definitions/uint32
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        minItems: 1
+        maxItems: 2
 
     required:
       - opp-level

drivers/base/power/domain.c

@@ -220,13 +220,10 @@ static void genpd_debug_add(struct generic_pm_domain *genpd);
 
 static void genpd_debug_remove(struct generic_pm_domain *genpd)
 {
-	struct dentry *d;
-
 	if (!genpd_debugfs_dir)
 		return;
 
-	d = debugfs_lookup(genpd->name, genpd_debugfs_dir);
-	debugfs_remove(d);
+	debugfs_lookup_and_remove(genpd->name, genpd_debugfs_dir);
 }
 
 static void genpd_update_accounting(struct generic_pm_domain *genpd)

drivers/opp/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config PM_OPP
 	bool
-	select SRCU
 	help
 	  SOCs have a standard set of tuples consisting of frequency and
 	  voltage pairs that the device will support per voltage domain. This

drivers/opp/debugfs.c

@@ -235,7 +235,7 @@ static void opp_migrate_dentry(struct opp_device *opp_dev,
 
 	dentry = debugfs_rename(rootdir, opp_dev->dentry, rootdir,
 				opp_table->dentry_name);
-	if (!dentry) {
+	if (IS_ERR(dentry)) {
 		dev_err(dev, "%s: Failed to rename link from: %s to %s\n",
 			__func__, dev_name(opp_dev->dev), dev_name(dev));
 		return;

drivers/powercap/idle_inject.c

@@ -155,10 +155,12 @@ void idle_inject_set_duration(struct idle_inject_device *ii_dev,
 			      unsigned int run_duration_us,
 			      unsigned int idle_duration_us)
 {
-	if (run_duration_us && idle_duration_us) {
+	if (run_duration_us + idle_duration_us) {
 		WRITE_ONCE(ii_dev->run_duration_us, run_duration_us);
 		WRITE_ONCE(ii_dev->idle_duration_us, idle_duration_us);
 	}
+	if (!run_duration_us)
+		pr_debug("CPU is forced to 100 percent idle\n");
 }
 
 /**
@@ -201,7 +203,7 @@ int idle_inject_start(struct idle_inject_device *ii_dev)
 	unsigned int idle_duration_us = READ_ONCE(ii_dev->idle_duration_us);
 	unsigned int run_duration_us = READ_ONCE(ii_dev->run_duration_us);
 
-	if (!idle_duration_us || !run_duration_us)
+	if (!(idle_duration_us + run_duration_us))
 		return -EINVAL;
 
 	pr_debug("Starting injecting idle cycles on CPUs '%*pbl'\n",

drivers/powercap/intel_rapl_common.c

@@ -999,7 +999,15 @@ static u64 rapl_compute_time_window_core(struct rapl_package *rp, u64 value,
 
 		do_div(value, rp->time_unit);
 		y = ilog2(value);
-		f = div64_u64(4 * (value - (1 << y)), 1 << y);
+
+		/*
+		 * The target hardware field is 7 bits wide, so return all ones
+		 * if the exponent is too large.
+		 */
+		if (y > 0x1f)
+			return 0x7f;
+
+		f = div64_u64(4 * (value - (1ULL << y)), 1ULL << y);
 		value = (y & 0x1f) | ((f & 0x3) << 5);
 	}
 	return value;
@@ -1113,7 +1121,10 @@ static const struct x86_cpu_id rapl_ids[] __initconst = {
 	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE,		&rapl_defaults_core),
 	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P,        &rapl_defaults_core),
 	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_S,	&rapl_defaults_core),
+	X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE,		&rapl_defaults_core),
+	X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE_L,	&rapl_defaults_core),
 	X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X,	&rapl_defaults_spr_server),
+	X86_MATCH_INTEL_FAM6_MODEL(EMERALDRAPIDS_X,	&rapl_defaults_spr_server),
 	X86_MATCH_INTEL_FAM6_MODEL(LAKEFIELD,		&rapl_defaults_core),
 
 	X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT,	&rapl_defaults_byt),

drivers/powercap/powercap_sys.c

@@ -530,9 +530,6 @@ struct powercap_zone *powercap_register_zone(
 	power_zone->name = kstrdup(name, GFP_KERNEL);
 	if (!power_zone->name)
 		goto err_name_alloc;
-	dev_set_name(&power_zone->dev, "%s:%x",
-					dev_name(power_zone->dev.parent),
-					power_zone->id);
 	power_zone->constraints = kcalloc(nr_constraints,
 					  sizeof(*power_zone->constraints),
 					  GFP_KERNEL);
@@ -555,9 +552,16 @@ struct powercap_zone *powercap_register_zone(
 	power_zone->dev_attr_groups[0] = &power_zone->dev_zone_attr_group;
 	power_zone->dev_attr_groups[1] = NULL;
 	power_zone->dev.groups = power_zone->dev_attr_groups;
+	dev_set_name(&power_zone->dev, "%s:%x",
+					dev_name(power_zone->dev.parent),
+					power_zone->id);
 	result = device_register(&power_zone->dev);
-	if (result)
-		goto err_dev_ret;
+	if (result) {
+		put_device(&power_zone->dev);
+		mutex_unlock(&control_type->lock);
+
+		return ERR_PTR(result);
+	}
 
 	control_type->nr_zones++;
 	mutex_unlock(&control_type->lock);

kernel/power/energy_model.c

@@ -87,10 +87,7 @@ static void em_debug_create_pd(struct device *dev)
 
 static void em_debug_remove_pd(struct device *dev)
 {
-	struct dentry *debug_dir;
-
-	debug_dir = debugfs_lookup(dev_name(dev), rootdir);
-	debugfs_remove_recursive(debug_dir);
+	debugfs_lookup_and_remove(dev_name(dev), rootdir);
 }
 
 static int __init em_debug_init(void)