arm64: Add __init section marker to some functions

They are not needed after booting, so mark them as __init to move them to the .init section.

Signed-off-by Jisheng Zhang <[email protected]>

---
Since v1:
- add __init section mark to __vdso_init() and __aarch32_alloc_vdso_pages()

  arch/arm64/include/asm/ptdump.h | 2 +-
  arch/arm64/kernel/vdso.c        | 4 ++--
  arch/arm64/mm/ptdump.c          | 4 ++--
  arch/arm64/mm/ptdump_debugfs.c  | 2 +-
  4 files changed, 6 insertions(+), 6 deletions(-)

arch/arm64/include/asm/ptdump.h +1 -1

index 38187f74e089..b1dd7ecff7ef 100644
@@ -23,7 +23,7 @@ struct ptdump_info {
 
  void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
  #ifdef CONFIG_PTDUMP_DEBUGFS
-void ptdump_debugfs_register(struct ptdump_info *info, const char *name);
+void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
  #else
  static inline void ptdump_debugfs_register(struct ptdump_info *info,
  					   const char *name) { }

arch/arm64/kernel/vdso.c +2 -2

index cee5d04ea9ad..d1fa288518a7 100644
@@ -86,7 +86,7 @@ static int vdso_mremap(const struct vm_special_mapping *sm,
  	return 0;
  }
 
-static int __vdso_init(enum vdso_abi abi)
+static int __init __vdso_init(enum vdso_abi abi)
  {
  	int i;
  	struct page **vdso_pagelist;

@@ -326,7 +326,7 @@ static int aarch32_alloc_sigpage(void)
  	return 0;
  }
 
-static int __aarch32_alloc_vdso_pages(void)
+static int __init __aarch32_alloc_vdso_pages(void)
  {
 
  	if (!IS_ENABLED(CONFIG_COMPAT_VDSO))

arch/arm64/mm/ptdump.c +2 -2

index 0e050d76b83a..a50e92ea1878 100644
@@ -337,7 +337,7 @@ void ptdump_walk(struct seq_file *s, struct ptdump_info *info)
  	ptdump_walk_pgd(&st.ptdump, info->mm, NULL);
  }
 
-static void ptdump_initialize(void)
+static void __init ptdump_initialize(void)
  {
  	unsigned i, j;
 

@@ -381,7 +381,7 @@ void ptdump_check_wx(void)
  		pr_info("Checked W+X mappings: passed, no W+X pages found\n");
  }
 
-static int ptdump_init(void)
+static int __init ptdump_init(void)
  {
  	address_markers[PAGE_END_NR].start_address = PAGE_END;
  #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)

arch/arm64/mm/ptdump_debugfs.c +1 -1

index d29d722ec3ec..68bf1a125502 100644
@@ -16,7 +16,7 @@ static int ptdump_show(struct seq_file *m, void *v)
  }
  DEFINE_SHOW_ATTRIBUTE(ptdump);
 
-void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
+void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name)
  {
  	debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
  }

They are not needed after booting, so mark them as __init to move them to the .init section.