linux-kernel - [PATCH 3/4] x86, sched: Expose init_freq

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Message-ID: <20220214101450.356047-4-ray.huang@amd.com>
Date:   Mon, 14 Feb 2022 18:14:49 +0800
From:   Huang Rui <ray.huang@....com>
To:     Borislav Petkov <bp@...en8.de>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        <linux-pm@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        <x86@...nel.org>
CC:     <linux-kernel@...r.kernel.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        Alex Deucher <alexander.deucher@....com>,
        "Deepak Sharma" <deepak.sharma@....com>,
        Jinzhou Su <Jinzhou.Su@....com>,
        Perry Yuan <Perry.Yuan@....com>,
        Jassmine Meng <li.meng@....com>, Huang Rui <ray.huang@....com>
Subject: [PATCH 3/4] x86, sched: 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: Huang Rui <ray.huang@....com>
---
 arch/x86/include/asm/topology.h | 4 ++++
 arch/x86/kernel/smpboot.c       | 8 +-------
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 168ade7d4007..c35005a03768 100644
--- a/arch/x86/include/asm/topology.h
+++ b/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)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 0718cc7649a4..8f2ff9be0fcc 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/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 */
-- 
2.25.1