powercap: intel_rapl: Add a symbol namespace for intel_rapl exports

Cleanup of the intel_rapl common driver requires introducing additional
exported helper and lifecycle functions. Before adding new exports,
create a dedicated symbol namespace for intel_rapl and update the
relevant interface drivers to explicitly import it.

This makes the intended usage of these symbols explicit, avoids
polluting the global namespace, and prepares the codebase for the
ongoing RAPL refactoring.

No functional changes are intended.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260212233044.329790-2-sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: Kuppuswamy Sathyanarayanan

drivers/powercap/intel_rapl_common.c

@@ -2083,15 +2083,15 @@ int rapl_package_add_pmu_locked(struct rapl_package *rp)
 
 	return rapl_pmu_update(rp);
 }
-EXPORT_SYMBOL_GPL(rapl_package_add_pmu_locked);
+EXPORT_SYMBOL_NS_GPL(rapl_package_add_pmu_locked, "INTEL_RAPL");
 
 int rapl_package_add_pmu(struct rapl_package *rp)
 {
 	guard(cpus_read_lock)();
 
 	return rapl_package_add_pmu_locked(rp);
 }
-EXPORT_SYMBOL_GPL(rapl_package_add_pmu);
+EXPORT_SYMBOL_NS_GPL(rapl_package_add_pmu, "INTEL_RAPL");
 
 void rapl_package_remove_pmu_locked(struct rapl_package *rp)
 {
@@ -2109,15 +2109,15 @@ void rapl_package_remove_pmu_locked(struct rapl_package *rp)
 	perf_pmu_unregister(&rapl_pmu.pmu);
 	memset(&rapl_pmu, 0, sizeof(struct rapl_pmu));
 }
-EXPORT_SYMBOL_GPL(rapl_package_remove_pmu_locked);
+EXPORT_SYMBOL_NS_GPL(rapl_package_remove_pmu_locked, "INTEL_RAPL");
 
 void rapl_package_remove_pmu(struct rapl_package *rp)
 {
 	guard(cpus_read_lock)();
 
 	rapl_package_remove_pmu_locked(rp);
 }
-EXPORT_SYMBOL_GPL(rapl_package_remove_pmu);
+EXPORT_SYMBOL_NS_GPL(rapl_package_remove_pmu, "INTEL_RAPL");
 #endif
 
 /* called from CPU hotplug notifier, hotplug lock held */
@@ -2150,14 +2150,14 @@ void rapl_remove_package_cpuslocked(struct rapl_package *rp)
 	list_del(&rp->plist);
 	kfree(rp);
 }
-EXPORT_SYMBOL_GPL(rapl_remove_package_cpuslocked);
+EXPORT_SYMBOL_NS_GPL(rapl_remove_package_cpuslocked, "INTEL_RAPL");
 
 void rapl_remove_package(struct rapl_package *rp)
 {
 	guard(cpus_read_lock)();
 	rapl_remove_package_cpuslocked(rp);
 }
-EXPORT_SYMBOL_GPL(rapl_remove_package);
+EXPORT_SYMBOL_NS_GPL(rapl_remove_package, "INTEL_RAPL");
 
 /*
  * RAPL Package energy counter scope:
@@ -2200,14 +2200,14 @@ struct rapl_package *rapl_find_package_domain_cpuslocked(int id, struct rapl_if_
 
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(rapl_find_package_domain_cpuslocked);
+EXPORT_SYMBOL_NS_GPL(rapl_find_package_domain_cpuslocked, "INTEL_RAPL");
 
 struct rapl_package *rapl_find_package_domain(int id, struct rapl_if_priv *priv, bool id_is_cpu)
 {
 	guard(cpus_read_lock)();
 	return rapl_find_package_domain_cpuslocked(id, priv, id_is_cpu);
 }
-EXPORT_SYMBOL_GPL(rapl_find_package_domain);
+EXPORT_SYMBOL_NS_GPL(rapl_find_package_domain, "INTEL_RAPL");
 
 /* called from CPU hotplug notifier, hotplug lock held */
 struct rapl_package *rapl_add_package_cpuslocked(int id, struct rapl_if_priv *priv, bool id_is_cpu)
@@ -2261,14 +2261,14 @@ struct rapl_package *rapl_add_package_cpuslocked(int id, struct rapl_if_priv *pr
 	kfree(rp);
 	return ERR_PTR(ret);
 }
-EXPORT_SYMBOL_GPL(rapl_add_package_cpuslocked);
+EXPORT_SYMBOL_NS_GPL(rapl_add_package_cpuslocked, "INTEL_RAPL");
 
 struct rapl_package *rapl_add_package(int id, struct rapl_if_priv *priv, bool id_is_cpu)
 {
 	guard(cpus_read_lock)();
 	return rapl_add_package_cpuslocked(id, priv, id_is_cpu);
 }
-EXPORT_SYMBOL_GPL(rapl_add_package);
+EXPORT_SYMBOL_NS_GPL(rapl_add_package, "INTEL_RAPL");
 
 static void power_limit_state_save(void)
 {

drivers/powercap/intel_rapl_msr.c

@@ -263,3 +263,4 @@ module_platform_driver(intel_rapl_msr_driver);
 MODULE_DESCRIPTION("Driver for Intel RAPL (Running Average Power Limit) control via MSR interface");
 MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS("INTEL_RAPL");

drivers/powercap/intel_rapl_tpmi.c

@@ -348,6 +348,7 @@ static struct auxiliary_driver intel_rapl_tpmi_driver = {
 
 module_auxiliary_driver(intel_rapl_tpmi_driver)
 
+MODULE_IMPORT_NS("INTEL_RAPL");
 MODULE_IMPORT_NS("INTEL_TPMI");
 
 MODULE_DESCRIPTION("Intel RAPL TPMI Driver");

drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c

@@ -111,4 +111,5 @@ void proc_thermal_rapl_remove(void)
 EXPORT_SYMBOL_GPL(proc_thermal_rapl_remove);
 
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS("INTEL_RAPL");
 MODULE_DESCRIPTION("RAPL interface using MMIO");