linux-kernel - [PATCH] smp: Mark smp_prepare_boot_cpu() _

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Message-Id: <20240907082720.452148-1-maobibo@loongson.cn>
Date: Sat,  7 Sep 2024 16:27:20 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Thomas Gleixner <tglx@...utronix.de>
Cc: Naveen N Rao <naveen@...nel.org>,
	loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	linux-mips@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH] smp: Mark smp_prepare_boot_cpu() __init

Function smp_prepare_boot_cpu() is only called at boot stage, here
mark it as __init.

Signed-off-by: Bibo Mao <maobibo@...ngson.cn>
---
 arch/loongarch/kernel/smp.c | 2 +-
 arch/mips/kernel/smp.c      | 2 +-
 arch/powerpc/kernel/smp.c   | 2 +-
 include/linux/smp.h         | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c
index ca405ab86aae..be2655c4c414 100644
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -476,7 +476,7 @@ core_initcall(ipi_pm_init);
 #endif
 
 /* Preload SMP state for boot cpu */
-void smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
 {
 	unsigned int cpu, node, rr_node;
 
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 0362fc5df7b0..39e193cad2b9 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -439,7 +439,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 }
 
 /* preload SMP state for boot cpu */
-void smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
 {
 	if (mp_ops->prepare_boot_cpu)
 		mp_ops->prepare_boot_cpu();
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 46e6d2cd7a2d..4ab9b8cee77a 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1166,7 +1166,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	cpu_smt_set_num_threads(num_threads, threads_per_core);
 }
 
-void smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
 {
 	BUG_ON(smp_processor_id() != boot_cpuid);
 #ifdef CONFIG_PPC64
diff --git a/include/linux/smp.h b/include/linux/smp.h
index fcd61dfe2af3..6a0813c905d0 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -109,7 +109,7 @@ static inline void on_each_cpu_cond(smp_cond_func_t cond_func,
  * Architecture specific boot CPU setup.  Defined as empty weak function in
  * init/main.c. Architectures can override it.
  */
-void smp_prepare_boot_cpu(void);
+void __init smp_prepare_boot_cpu(void);
 
 #ifdef CONFIG_SMP
 

base-commit: b31c4492884252a8360f312a0ac2049349ddf603
-- 
2.39.3