x86, ACPI: rename init_freq_invariance_cppc() to arch_init_invariance_cppc()

init_freq_invariance_cppc() was called in acpi_cppc_processor_probe(),
after CPU performance information and controls were populated from the
per-cpu _CPC objects.

But these _CPC objects provide information that helps with both CPU
(u-arch) and frequency invariance. Therefore, change the function name
to a more generic one, while adding the arch_ prefix, as this function
is expected to be defined differently by different architectures.

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: ionela-voinescu

arch/x86/include/asm/topology.h

@@ -227,7 +227,7 @@ static inline void init_freq_invariance(bool secondary, bool cppc_ready)
 
 #ifdef CONFIG_ACPI_CPPC_LIB
 void init_freq_invariance_cppc(void);
-#define init_freq_invariance_cppc init_freq_invariance_cppc
+#define arch_init_invariance_cppc init_freq_invariance_cppc
 
 bool amd_set_max_freq_ratio(u64 *ratio);
 #else

drivers/acpi/cppc_acpi.c

@@ -633,8 +633,8 @@ static bool is_cppc_supported(int revision, int num_ent)
  *  )
  */
 
-#ifndef init_freq_invariance_cppc
-static inline void init_freq_invariance_cppc(void) { }
+#ifndef arch_init_invariance_cppc
+static inline void arch_init_invariance_cppc(void) { }
 #endif
 
 /**
@@ -816,7 +816,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 		goto out_free;
 	}
 
-	init_freq_invariance_cppc();
+	arch_init_invariance_cppc();
 
 	kfree(output.pointer);
 	return 0;