mirror of
https://github.com/gatieme/LDD-LinuxDeviceDrivers.git
synced 2026-08-19 19:14:17 +08:00
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*****************************************************************
|
|
文件名：mem.c
|
|
输入参数：
|
|
pid 接收待查询进程的PID
|
|
va 接收待查询的虚拟地址
|
|
*****************************************************************/
|
|
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/mm.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/page.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/kallsyms.h>
|
|
#include <asm/fixmap.h>
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
typedef unsigned long (*PFUNC)(void);
|
|
|
|
#if 0
|
|
unsigned long SYMS_FUN(char *name)
|
|
{
|
|
PFUNC func = (PFUNC)kallsyms_lookup_name(name);
|
|
|
|
//printk("0x%16lx\n", (unsigned long)func);
|
|
return (*func)();
|
|
}
|
|
#endif
|
|
void show_layout(void)
|
|
{
|
|
#define SYMS_VAL(name) ((unsigned long)kallsyms_lookup_name(name))
|
|
#define SYMS_FUN(name) ((*((PFUNC)kallsyms_lookup_name(name)))())
|
|
#define MLK(b, t) b, t, ((t) - (b)) >> 10
|
|
#define MLM(b, t) b, t, ((t) - (b)) >> 20
|
|
#define MLG(b, t) b, t, ((t) - (b)) >> 30
|
|
#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)
|
|
#if 0
|
|
pr_notice("Virtual kernel memory layout:\n");
|
|
#ifdef CONFIG_KASAN
|
|
pr_notice(" kasan : 0x%16lx - 0x%16lx (%6ld GB)\n",
|
|
MLG(KASAN_SHADOW_START, KASAN_SHADOW_END));
|
|
#endif
|
|
pr_notice(" modules : 0x%16lx - 0x%16lx (%6ld MB)\n",
|
|
MLM(MODULES_VADDR, MODULES_END));
|
|
pr_notice(" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n",
|
|
MLG(VMALLOC_START, VMALLOC_END));
|
|
pr_notice(" kernel : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK(SYMS_VAL("_text"), SYMS_VAL("_end")));
|
|
pr_notice(" .text : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK_ROUNDUP(SYMS_VAL("_text"), SYMS_VAL("_etext")));
|
|
pr_notice(" .rodata : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK_ROUNDUP(SYMS_VAL("__start_rodata"), SYMS_VAL("__init_begin")));
|
|
pr_notice(" .init : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK_ROUNDUP(SYMS_VAL("__init_begin"), SYMS_VAL("__init_end")));
|
|
pr_notice(" .data : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK_ROUNDUP(SYMS_VAL("_sdata"), SYMS_VAL("_edata")));
|
|
pr_notice(" .bss : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK_ROUNDUP(SYMS_VAL("__bss_start"), SYMS_VAL("__bss_stop")));
|
|
pr_notice(" fixed : 0x%16lx - 0x%16lx (%6ld KB)\n",
|
|
MLK(FIXADDR_START, FIXADDR_TOP));
|
|
pr_notice(" PCI I/O : 0x%16lx - 0x%16lx (%6ld MB)\n",
|
|
MLM(PCI_IO_START, PCI_IO_END));
|
|
#ifdef CONFIG_SPARSEMEM_VMEMMAP
|
|
pr_notice(" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n",
|
|
MLG(SYMS_VAL("vmemmap"), SYMS_VAL("vmemmap") + VMEMMAP_SIZE));
|
|
pr_notice(" 0x%16lx - 0x%16lx (%6ld MB actual)\n",
|
|
MLM((unsigned long)phys_to_page(SYMS_FUN("memblock_start_of_DRAM")),
|
|
(unsigned long)virt_to_page(high_memory)));
|
|
#endif
|
|
pr_notice(" memory : 0x%16lx - 0x%16lx (%6ld MB)\n",
|
|
MLM((unsigned long)phys_to_virt(SYMS_FUN("memblock_start_of_DRAM")),
|
|
(unsigned long)high_memory));
|
|
#endif
|
|
//pr_notice("KIMAGE_VADDR: 0x%16lx\n", KIMAGE_VADDR);
|
|
pr_notice("PAGE_OFFSET : 0x%16lx\n", PAGE_OFFSET);
|
|
#undef MLK
|
|
#undef MLM
|
|
#undef MLK_ROUNDUP
|
|
}
|
|
|
|
static int __init show_layout_init(void)
|
|
{
|
|
show_layout();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit show_layout_exit(void)
|
|
{
|
|
printk(KERN_INFO"Goodbye!\n");
|
|
}
|
|
|
|
module_init(show_layout_init);
|
|
module_exit(show_layout_exit);
|