From: Jan Beulich <jbeulich@novell.com>
Date: Fri, 8 Dec 2006 10:35:57 +0000 (-0800)
Subject: [PATCH] move kallsyms data to .rodata
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=aad094701c6355cb2b3d74a07ec0496f4a48c787;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] move kallsyms data to .rodata

Kallsyms data is never written to, so it can as well benefit from
CONFIG_DEBUG_RODATA.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index ab63cfc42992..6f294ff4f9ee 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -31,14 +31,14 @@
 #endif
 
 /* These will be re-linked against their real values during the second link stage */
-extern unsigned long kallsyms_addresses[] __attribute__((weak));
-extern unsigned long kallsyms_num_syms __attribute__((weak,section("data")));
-extern u8 kallsyms_names[] __attribute__((weak));
+extern const unsigned long kallsyms_addresses[] __attribute__((weak));
+extern const unsigned long kallsyms_num_syms __attribute__((weak));
+extern const u8 kallsyms_names[] __attribute__((weak));
 
-extern u8 kallsyms_token_table[] __attribute__((weak));
-extern u16 kallsyms_token_index[] __attribute__((weak));
+extern const u8 kallsyms_token_table[] __attribute__((weak));
+extern const u16 kallsyms_token_index[] __attribute__((weak));
 
-extern unsigned long kallsyms_markers[] __attribute__((weak));
+extern const unsigned long kallsyms_markers[] __attribute__((weak));
 
 static inline int is_kernel_inittext(unsigned long addr)
 {
@@ -84,7 +84,7 @@ static int is_ksym_addr(unsigned long addr)
 static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
 {
 	int len, skipped_first = 0;
-	u8 *tptr, *data;
+	const u8 *tptr, *data;
 
 	/* get the compressed symbol length from the first symbol byte */
 	data = &kallsyms_names[off];
@@ -132,7 +132,7 @@ static char kallsyms_get_symbol_type(unsigned int off)
  * kallsyms array */
 static unsigned int get_symbol_offset(unsigned long pos)
 {
-	u8 *name;
+	const u8 *name;
 	int i;
 
 	/* use the closest marker we have. We have markers every 256 positions,
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index f359b730c2c5..8b809b264d18 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -265,7 +265,7 @@ static void write_src(void)
 	printf("#define ALGN .align 4\n");
 	printf("#endif\n");
 
-	printf(".data\n");
+	printf("\t.section .rodata, \"a\"\n");
 
 	/* Provide proper symbols relocatability by their '_text'
 	 * relativeness.  The symbol names cannot be used to construct