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@kernel.org>
Link: https://lore.kernel.org/r/20221202161859.2228-1-jszhang@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index 0f5eaa4c3a39a45ac694d25c6ea0f7419ca8d9a8..d32d4ed5519bd3066a5a5a15646744648113f6d1 100644 (file)
--- 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()) {