kexec.c File Reference

#include <linux/capability.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/kexec.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/highmem.h>
#include <linux/syscalls.h>
#include <linux/reboot.h>
#include <linux/ioport.h>
#include <linux/hardirq.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
#include <linux/utsname.h>
#include <linux/numa.h>
#include <linux/suspend.h>
#include <linux/device.h>
#include <linux/freezer.h>
#include <linux/pm.h>
#include <linux/cpu.h>
#include <linux/console.h>
#include <linux/vmalloc.h>
#include <linux/swap.h>
#include <linux/syscore_ops.h>
#include <asm/page.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/sections.h>

Go to the source code of this file.

Macros
#define	KIMAGE_NO_DEST   (-1UL)
#define	for_each_kimage_entry(image, ptr, entry)

Functions
int	kexec_should_crash (struct task_struct *p)
struct page *	kimage_alloc_control_pages (struct kimage *image, unsigned int order)
	SYSCALL_DEFINE4 (kexec_load, unsigned long, entry, unsigned long, nr_segments, struct kexec_segment __user *, segments, unsigned long, flags)
void __weak	crash_map_reserved_pages (void)
void __weak	crash_unmap_reserved_pages (void)
void	crash_kexec (struct pt_regs *regs)
size_t	crash_get_memory_size (void)
void __weak	crash_free_reserved_phys_range (unsigned long begin, unsigned long end)
int	crash_shrink_memory (unsigned long new_size)
void	crash_save_cpu (struct pt_regs *regs, int cpu)
	module_init (crash_notes_memory_init)
int __init	parse_crashkernel (char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base)
void	crash_save_vmcoreinfo (void)
void	vmcoreinfo_append_str (const char *fmt,...)
void	__attribute__ ((weak))
	module_init (crash_save_vmcoreinfo_init)

Variables
note_buf_t __percpu *	crash_notes
u32	vmcoreinfo_note [VMCOREINFO_NOTE_SIZE/4]
size_t	vmcoreinfo_size
size_t	vmcoreinfo_max_size = sizeof(vmcoreinfo_data)
struct resource	crashk_res
struct kimage *	kexec_image
struct kimage *	kexec_crash_image

Macro Definition Documentation

#define for_each_kimage_entry	(		image,
			ptr,
			entry
	)

Value:

for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE); \
        ptr = (entry & IND_INDIRECTION)? \
            phys_to_virt((entry & PAGE_MASK)): ptr +1)

Definition at line 615 of file kexec.c.

#define KIMAGE_NO_DEST   (-1UL)

Definition at line 109 of file kexec.c.

Function Documentation

void __attribute__ ( (weak)  )

read

Definition at line 1452 of file kexec.c.

void __weak crash_free_reserved_phys_range	(	unsigned long	begin,
		unsigned long	end
	)

Definition at line 1113 of file kexec.c.

size_t crash_get_memory_size

(

void

)

Definition at line 1103 of file kexec.c.

void crash_kexec

(

struct pt_regs *

regs

)

Definition at line 1080 of file kexec.c.

void __weak crash_map_reserved_pages

(

void

)

Definition at line 1035 of file kexec.c.

void crash_save_cpu	(	struct pt_regs *	regs,
		int	cpu
	)

Definition at line 1205 of file kexec.c.

void crash_save_vmcoreinfo

(

void

)

Definition at line 1424 of file kexec.c.

int crash_shrink_memory

(

unsigned long

new_size

)

Definition at line 1126 of file kexec.c.

void __weak crash_unmap_reserved_pages

(

void

)

Definition at line 1038 of file kexec.c.

int kexec_should_crash

(

struct task_struct *

p

)

Definition at line 58 of file kexec.c.

struct page* kimage_alloc_control_pages ( struct kimage *  image, unsigned int  order  )

read

Definition at line 528 of file kexec.c.

module_init

(

crash_notes_memory_init

)

Definition at line 1242 of file kexec.c.

module_init

(

crash_save_vmcoreinfo_init

)

Definition at line 1522 of file kexec.c.

int __init parse_crashkernel	(	char *	cmdline,
		unsigned long long	system_ram,
		unsigned long long *	crash_size,
		unsigned long long *	crash_base
	)

Definition at line 1372 of file kexec.c.

SYSCALL_DEFINE4	(	kexec_load	,
		unsigned	long,
		entry	,
		unsigned	long,
		nr_segments	,
		struct kexec_segment __user *	,
		segments	,
		unsigned	long,
		flags
	)

Definition at line 939 of file kexec.c.

void vmcoreinfo_append_str	(	const char *	fmt,
			...
	)

Definition at line 1430 of file kexec.c.

Variable Documentation

note_buf_t __percpu* crash_notes

Definition at line 42 of file kexec.c.

struct resource crashk_res

Initial value:

= {
    .name  = "Crash kernel",
    .start = 0,
    .end   = 0,
    .flags = IORESOURCE_BUSY | IORESOURCE_MEM
}

Definition at line 51 of file kexec.c.

struct kimage* kexec_crash_image

Definition at line 935 of file kexec.c.

struct kimage* kexec_image

Definition at line 934 of file kexec.c.

size_t vmcoreinfo_max_size = sizeof(vmcoreinfo_data)

Definition at line 48 of file kexec.c.

u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4]

Definition at line 46 of file kexec.c.

size_t vmcoreinfo_size

Definition at line 47 of file kexec.c.