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[PATCH] x86_64: Only use asm/sections.h to declare section symbols

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Adding __initdata_* to asm-generic/sections.h
Replaces a lot of open coded externs in arch/x86_64/*
I had to change __bss_end to __bss_stop to match the other architectures.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-11-05 17:25:53 +01:00 • committed by Linus Torvalds
parent 6b75aeedde
commit 2bc0414ee0
6 changed files with 8 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

3
arch/x86_64/kernel/e820.c
View file

@ -23,8 +23,7 @@
#include <asm/e820.h> #include <asm/e820.h>
#include <asm/proto.h> #include <asm/proto.h>
#include <asm/bootsetup.h> #include <asm/bootsetup.h>
#include <asm/sections.h>
extern char _end[];
/* /*
* PFN of last memory page. * PFN of last memory page.

6
arch/x86_64/kernel/head64.c
View file

@ -20,14 +20,14 @@
#include <asm/setup.h> #include <asm/setup.h>
#include <asm/desc.h> #include <asm/desc.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <asm/sections.h>
/* Don't add a printk in there. printk relies on the PDA which is not initialized /* Don't add a printk in there. printk relies on the PDA which is not initialized
yet. */ yet. */
static void __init clear_bss(void) static void __init clear_bss(void)
{ {
extern char __bss_start[], __bss_end[];
memset(__bss_start, 0, memset(__bss_start, 0,
(unsigned long) __bss_end - (unsigned long) __bss_start); (unsigned long) __bss_stop - (unsigned long) __bss_start);
} }
#define NEW_CL_POINTER 0x228 /* Relative to real mode data */ #define NEW_CL_POINTER 0x228 /* Relative to real mode data */
@ -76,8 +76,6 @@ static void __init setup_boot_cpu_data(void)
boot_cpu_data.x86_mask = eax & 0xf; boot_cpu_data.x86_mask = eax & 0xf;
} }
extern char _end[];
void __init x86_64_start_kernel(char * real_mode_data) void __init x86_64_start_kernel(char * real_mode_data)
{ {
char *s; char *s;

2
arch/x86_64/kernel/setup.c
View file

@ -60,6 +60,7 @@
#include <asm/setup.h> #include <asm/setup.h>
#include <asm/mach_apic.h> #include <asm/mach_apic.h>
#include <asm/numa.h> #include <asm/numa.h>
#include <asm/sections.h>
/* /*
* Machine setup.. * Machine setup..
@ -103,7 +104,6 @@ struct edid_info edid_info;
struct e820map e820; struct e820map e820;
extern int root_mountflags; extern int root_mountflags;
extern char _text, _etext, _edata, _end;
char command_line[COMMAND_LINE_SIZE]; char command_line[COMMAND_LINE_SIZE];

2
arch/x86_64/kernel/vmlinux.lds.S
View file

@ -50,7 +50,7 @@ SECTIONS
*(.bss.page_aligned) *(.bss.page_aligned)
*(.bss) *(.bss)
} }
__bss_end = .; __bss_stop = .;
. = ALIGN(PAGE_SIZE); . = ALIGN(PAGE_SIZE);
. = ALIGN(CONFIG_X86_L1_CACHE_BYTES); . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);

10
arch/x86_64/mm/init.c
View file

@ -36,6 +36,7 @@
#include <asm/mmu_context.h> #include <asm/mmu_context.h>
#include <asm/proto.h> #include <asm/proto.h>
#include <asm/smp.h> #include <asm/smp.h>
#include <asm/sections.h>
#ifndef Dprintk #ifndef Dprintk
#define Dprintk(x...) #define Dprintk(x...)
@ -45,8 +46,6 @@
extern int swiotlb; extern int swiotlb;
#endif #endif
extern char _stext[];
static unsigned long dma_reserve __initdata; static unsigned long dma_reserve __initdata;
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@ -88,9 +87,6 @@ void show_mem(void)
/* References to section boundaries */ /* References to section boundaries */
extern char _text, _etext, _edata, __bss_start, _end[];
extern char __init_begin, __init_end;
int after_bootmem; int after_bootmem;
static void *spp_getpage(void) static void *spp_getpage(void)
@ -491,8 +487,6 @@ void __init mem_init(void)
#endif #endif
} }
extern char __initdata_begin[], __initdata_end[];
void free_initmem(void) void free_initmem(void)
{ {
unsigned long addr; unsigned long addr;
@ -506,7 +500,7 @@ void free_initmem(void)
totalram_pages++; totalram_pages++;
} }
memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin); memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin);
printk ("Freeing unused kernel memory: %luk freed\n", (&__init_end - &__init_begin) >> 10); printk ("Freeing unused kernel memory: %luk freed\n", (__init_end - __init_begin) >> 10);
} }
#ifdef CONFIG_BLK_DEV_INITRD #ifdef CONFIG_BLK_DEV_INITRD

1
include/asm-generic/sections.h
View file

@ -13,5 +13,6 @@ extern char _eextratext[] __attribute__((weak));
extern char _end[]; extern char _end[];
extern char __per_cpu_start[], __per_cpu_end[]; extern char __per_cpu_start[], __per_cpu_end[];
extern char __kprobes_text_start[], __kprobes_text_end[]; extern char __kprobes_text_start[], __kprobes_text_end[];
extern char __initdata_begin[], __initdata_end[];
#endif /* _ASM_GENERIC_SECTIONS_H_ */ #endif /* _ASM_GENERIC_SECTIONS_H_ */