x86: Expose init_freq_invariance() to topology header

The function init_freq_invariance will be used on x86 CPPC, so expose it in
the topology header.
Signed-off-by: NHuang Rui <ray.huang@amd.com>
[ rjw: Subject adjustment ]
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

arch/x86/include/asm/topology.h

@@ -215,10 +215,14 @@ extern void arch_scale_freq_tick(void);
 #define arch_scale_freq_tick arch_scale_freq_tick
 
 extern void arch_set_max_freq_ratio(bool turbo_disabled);
+void init_freq_invariance(bool secondary, bool cppc_ready);
 #else
 static inline void arch_set_max_freq_ratio(bool turbo_disabled)
 {
 }
+static inline void init_freq_invariance(bool secondary, bool cppc_ready)
+{
+}
 #endif
 
 #if defined(CONFIG_ACPI_CPPC_LIB) && defined(CONFIG_SMP)

arch/x86/kernel/smpboot.c

@@ -155,8 +155,6 @@ static inline void smpboot_restore_warm_reset_vector(void)
 	*((volatile u32 *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = 0;
 }
 
-static void init_freq_invariance(bool secondary, bool cppc_ready);
-
 /*
  * Report back to the Boot Processor during boot time or to the caller processor
  * during CPU online.
@@ -2125,7 +2123,7 @@ static void register_freq_invariance_syscore_ops(void)
 static inline void register_freq_invariance_syscore_ops(void) {}
 #endif
 
-static void init_freq_invariance(bool secondary, bool cppc_ready)
+void init_freq_invariance(bool secondary, bool cppc_ready)
 {
 	bool ret = false;
 
@@ -2222,8 +2220,4 @@ void arch_scale_freq_tick(void)
 	pr_warn("Scheduler frequency invariance went wobbly, disabling!\n");
 	schedule_work(&disable_freq_invariance_work);
 }
-#else
-static inline void init_freq_invariance(bool secondary, bool cppc_ready)
-{
-}
 #endif /* CONFIG_X86_64 */