linux-kernel - [PATCH next] arm64: alternatives: add __init/_

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Date:   Sat,  3 Dec 2022 00:18:59 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH next] arm64: alternatives: add __init/__initconst to some functions/variables

apply_alternatives_vdso(), __apply_alternatives_multi_stop() and
kernel_alternatives are not needed after booting, so mark the two
functions as __init and the var as __initconst.

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
---
 arch/arm64/kernel/alternative.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index 0f5eaa4c3a39..d32d4ed5519b 100644
--- a/arch/arm64/kernel/alternative.c
+++ b/arch/arm64/kernel/alternative.c
@@ -196,7 +196,7 @@ static void __apply_alternatives(const struct alt_region *region,
 	}
 }
 
-static void apply_alternatives_vdso(void)
+static void __init apply_alternatives_vdso(void)
 {
 	struct alt_region region;
 	const struct elf64_hdr *hdr;
@@ -220,7 +220,7 @@ static void apply_alternatives_vdso(void)
 	__apply_alternatives(&region, false, &all_capabilities[0]);
 }
 
-static const struct alt_region kernel_alternatives = {
+static const struct alt_region kernel_alternatives __initconst = {
 	.begin	= (struct alt_instr *)__alt_instructions,
 	.end	= (struct alt_instr *)__alt_instructions_end,
 };
@@ -229,7 +229,7 @@ static const struct alt_region kernel_alternatives = {
  * We might be patching the stop_machine state machine, so implement a
  * really simple polling protocol here.
  */
-static int __apply_alternatives_multi_stop(void *unused)
+static int __init __apply_alternatives_multi_stop(void *unused)
 {
 	/* We always have a CPU 0 at this point (__init) */
 	if (smp_processor_id()) {
-- 
2.38.1