diff options
Diffstat (limited to 'kexec/arch/arm/crashdump-arm.c')
| -rw-r--r-- | kexec/arch/arm/crashdump-arm.c | 40 |
1 files changed, 1 insertions, 39 deletions
diff --git a/kexec/arch/arm/crashdump-arm.c b/kexec/arch/arm/crashdump-arm.c index ac76e0a..daa4788 100644 --- a/kexec/arch/arm/crashdump-arm.c +++ b/kexec/arch/arm/crashdump-arm.c @@ -73,48 +73,10 @@ static struct crash_elf_info elf_info = { extern unsigned long long user_page_offset; -/* Retrieve kernel _stext symbol virtual address from /proc/kallsyms */ -static unsigned long long get_kernel_stext_sym(void) -{ - const char *kallsyms = "/proc/kallsyms"; - const char *stext = "_stext"; - char sym[128]; - char line[128]; - FILE *fp; - unsigned long long vaddr = 0; - char type; - - fp = fopen(kallsyms, "r"); - if (!fp) { - fprintf(stderr, "Cannot open %s\n", kallsyms); - return 0; - } - - while(fgets(line, sizeof(line), fp) != NULL) { - unsigned long long addr; - - if (sscanf(line, "%Lx %c %s", &addr, &type, sym) != 3) - continue; - - if (strcmp(sym, stext) == 0) { - dbgprintf("kernel symbol %s vaddr = %#llx\n", stext, addr); - vaddr = addr; - break; - } - } - - fclose(fp); - - if (vaddr == 0) - fprintf(stderr, "Cannot get kernel %s symbol address\n", stext); - - return vaddr; -} - static int get_kernel_page_offset(struct kexec_info *info, struct crash_elf_info *elf_info) { - unsigned long long stext_sym_addr = get_kernel_stext_sym(); + unsigned long long stext_sym_addr = get_kernel_sym("_stext"); if (stext_sym_addr == 0) { if (user_page_offset != (-1ULL)) { elf_info->page_offset = user_page_offset; |