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Commit aad09470 authored by Jan Beulich's avatar Jan Beulich Committed by Linus Torvalds
Browse files

[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: default avatarJan Beulich <jbeulich@novell.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d93f7de8

kernel/kallsyms.c

+8 −8
Original line number Diff line number Diff line
@@ -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,

scripts/kallsyms.c

+1 −1
Original line number Diff line number Diff line
@@ -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