linux-kernel - [PATCH v2] arm64: Add __init section marker to some functions

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Date:   Tue, 30 Mar 2021 13:54:49 +0800
From:   Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] 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 <Jisheng.Zhang@...aptics.com>
---
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(-)

diff --git a/arch/arm64/include/asm/ptdump.h b/arch/arm64/include/asm/ptdump.h
index 38187f74e089..b1dd7ecff7ef 100644
--- a/arch/arm64/include/asm/ptdump.h
+++ b/arch/arm64/include/asm/ptdump.h
@@ -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) { }
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index cee5d04ea9ad..d1fa288518a7 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -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))
diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
index 0e050d76b83a..a50e92ea1878 100644
--- a/arch/arm64/mm/ptdump.c
+++ b/arch/arm64/mm/ptdump.c
@@ -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)
diff --git a/arch/arm64/mm/ptdump_debugfs.c b/arch/arm64/mm/ptdump_debugfs.c
index d29d722ec3ec..68bf1a125502 100644
--- a/arch/arm64/mm/ptdump_debugfs.c
+++ b/arch/arm64/mm/ptdump_debugfs.c
@@ -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);
 }
-- 
2.31.0