diff options
Diffstat (limited to 'meta/recipes-kernel/kexec/kexec-tools/0002-kexec-generalize-and-rename-get_kernel_stext_sym.patch')
| -rw-r--r-- | meta/recipes-kernel/kexec/kexec-tools/0002-kexec-generalize-and-rename-get_kernel_stext_sym.patch | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/meta/recipes-kernel/kexec/kexec-tools/0002-kexec-generalize-and-rename-get_kernel_stext_sym.patch b/meta/recipes-kernel/kexec/kexec-tools/0002-kexec-generalize-and-rename-get_kernel_stext_sym.patch deleted file mode 100644 index 953f13bd0a..0000000000 --- a/meta/recipes-kernel/kexec/kexec-tools/0002-kexec-generalize-and-rename-get_kernel_stext_sym.patch +++ /dev/null @@ -1,194 +0,0 @@ -From d29f37bb6e9114aba96c606103b110f511bee9a1 Mon Sep 17 00:00:00 2001 -From: Pratyush Anand <panand@redhat.com> -Date: Wed, 2 Nov 2016 15:05:25 +0530 -Subject: [PATCH 2/9] kexec: generalize and rename get_kernel_stext_sym() - -get_kernel_stext_sym() has been defined for both arm and i386. Other -architecture might need some other kernel symbol address. Therefore rewrite -this function as generic function to get any kernel symbol address. - -More over, kallsyms is not arch specific representation, therefore have -common function for all arches. - -Upstream-Status: Backport [https://git.linaro.org/people/takahiro.akashi/kexec-tools.git] - -Signed-off-by: Pratyush Anand <panand@redhat.com> -[created symbols.c] -Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> -Signed-off-by: He Zhe <zhe.he@windriver.com> ---- - kexec/Makefile | 1 + - kexec/arch/arm/crashdump-arm.c | 40 +--------------------------------------- - kexec/arch/i386/crashdump-x86.c | 29 ----------------------------- - kexec/kexec.h | 2 ++ - kexec/symbols.c | 41 +++++++++++++++++++++++++++++++++++++++++ - 5 files changed, 45 insertions(+), 68 deletions(-) - create mode 100644 kexec/symbols.c - -diff --git a/kexec/Makefile b/kexec/Makefile -index 39f365f..2b4fb3d 100644 ---- a/kexec/Makefile -+++ b/kexec/Makefile -@@ -26,6 +26,7 @@ KEXEC_SRCS_base += kexec/kernel_version.c - KEXEC_SRCS_base += kexec/lzma.c - KEXEC_SRCS_base += kexec/zlib.c - KEXEC_SRCS_base += kexec/kexec-xen.c -+KEXEC_SRCS_base += kexec/symbols.c - - KEXEC_GENERATED_SRCS += $(PURGATORY_HEX_C) - -diff --git a/kexec/arch/arm/crashdump-arm.c b/kexec/arch/arm/crashdump-arm.c -index 4a89b5e..245c21a 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; -diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c -index ab833d4..abf82a5 100644 ---- a/kexec/arch/i386/crashdump-x86.c -+++ b/kexec/arch/i386/crashdump-x86.c -@@ -102,35 +102,6 @@ static int get_kernel_paddr(struct kexec_info *UNUSED(info), - return -1; - } - --/* Retrieve kernel symbol virtual address from /proc/kallsyms */ --static unsigned long long get_kernel_sym(const char *symbol) --{ -- const char *kallsyms = "/proc/kallsyms"; -- char sym[128]; -- char line[128]; -- FILE *fp; -- unsigned long long vaddr; -- char type; -- -- fp = fopen(kallsyms, "r"); -- if (!fp) { -- fprintf(stderr, "Cannot open %s\n", kallsyms); -- return 0; -- } -- -- while(fgets(line, sizeof(line), fp) != NULL) { -- if (sscanf(line, "%Lx %c %s", &vaddr, &type, sym) != 3) -- continue; -- if (strcmp(sym, symbol) == 0) { -- dbgprintf("kernel symbol %s vaddr = %16llx\n", symbol, vaddr); -- return vaddr; -- } -- } -- -- fprintf(stderr, "Cannot get kernel %s symbol address\n", symbol); -- return 0; --} -- - /* Retrieve info regarding virtual address kernel has been compiled for and - * size of the kernel from /proc/kcore. Current /proc/kcore parsing from - * from kexec-tools fails because of malformed elf notes. A kernel patch has -diff --git a/kexec/kexec.h b/kexec/kexec.h -index 9194f1c..b4fafad 100644 ---- a/kexec/kexec.h -+++ b/kexec/kexec.h -@@ -312,4 +312,6 @@ int xen_kexec_load(struct kexec_info *info); - int xen_kexec_unload(uint64_t kexec_flags); - void xen_kexec_exec(void); - -+extern unsigned long long get_kernel_sym(const char *text); -+ - #endif /* KEXEC_H */ -diff --git a/kexec/symbols.c b/kexec/symbols.c -new file mode 100644 -index 0000000..ea6e327 ---- /dev/null -+++ b/kexec/symbols.c -@@ -0,0 +1,41 @@ -+#include <stdio.h> -+#include <string.h> -+#include "kexec.h" -+ -+/* Retrieve kernel symbol virtual address from /proc/kallsyms */ -+unsigned long long get_kernel_sym(const char *text) -+{ -+ const char *kallsyms = "/proc/kallsyms"; -+ 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, text) == 0) { -+ dbgprintf("kernel symbol %s vaddr = %#llx\n", -+ text, addr); -+ vaddr = addr; -+ break; -+ } -+ } -+ -+ fclose(fp); -+ -+ if (vaddr == 0) -+ fprintf(stderr, "Cannot get kernel %s symbol address\n", text); -+ -+ return vaddr; -+} --- -1.9.1 - |