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author | Jinyang He <hejinyang@loongson.cn> | 2021-02-04 04:07:13 +0100 |
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committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-02-13 09:57:22 +0100 |
commit | b306c5f560680fb9a4a25b9295d6c67b42d5f2b7 (patch) | |
tree | d3c246db9a9faca5a2fc0fda3498425694fadd64 | |
parent | MIPS: Simplify EVA cache handling (diff) | |
download | linux-b306c5f560680fb9a4a25b9295d6c67b42d5f2b7.tar.xz linux-b306c5f560680fb9a4a25b9295d6c67b42d5f2b7.zip |
MIPS: Use common way to parse elfcorehdr
"elfcorehdr" can be parsed at kernel/crash_dump.c
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
-rw-r--r-- | arch/mips/kernel/setup.c | 49 |
1 files changed, 21 insertions, 28 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index fb59188b623f..279be0153f8b 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -28,6 +28,7 @@ #include <linux/decompress/generic.h> #include <linux/of_fdt.h> #include <linux/dmi.h> +#include <linux/crash_dump.h> #include <asm/addrspace.h> #include <asm/bootinfo.h> @@ -405,34 +406,32 @@ static int __init early_parse_memmap(char *p) } early_param("memmap", early_parse_memmap); -#ifdef CONFIG_PROC_VMCORE -static unsigned long setup_elfcorehdr, setup_elfcorehdr_size; -static int __init early_parse_elfcorehdr(char *p) +static void __init mips_reserve_vmcore(void) { +#ifdef CONFIG_PROC_VMCORE phys_addr_t start, end; u64 i; - setup_elfcorehdr = memparse(p, &p); - - for_each_mem_range(i, &start, &end) { - if (setup_elfcorehdr >= start && setup_elfcorehdr < end) { - /* - * Reserve from the elf core header to the end of - * the memory segment, that should all be kdump - * reserved memory. - */ - setup_elfcorehdr_size = end - setup_elfcorehdr; - break; + if (!elfcorehdr_size) { + for_each_mem_range(i, &start, &end) { + if (elfcorehdr_addr >= start && elfcorehdr_addr < end) { + /* + * Reserve from the elf core header to the end of + * the memory segment, that should all be kdump + * reserved memory. + */ + elfcorehdr_size = end - elfcorehdr_addr; + break; + } } } - /* - * If we don't find it in the memory map, then we shouldn't - * have to worry about it, as the new kernel won't use it. - */ - return 0; -} -early_param("elfcorehdr", early_parse_elfcorehdr); + + pr_info("Reserving %ldKB of memory at %ldKB for kdump\n", + (unsigned long)elfcorehdr_size >> 10, (unsigned long)elfcorehdr_addr >> 10); + + memblock_reserve(elfcorehdr_addr, elfcorehdr_size); #endif +} #ifdef CONFIG_KEXEC @@ -654,13 +653,7 @@ static void __init arch_mem_init(char **cmdline_p) */ memblock_set_current_limit(PFN_PHYS(max_low_pfn)); -#ifdef CONFIG_PROC_VMCORE - if (setup_elfcorehdr && setup_elfcorehdr_size) { - printk(KERN_INFO "kdump reserved memory at %lx-%lx\n", - setup_elfcorehdr, setup_elfcorehdr_size); - memblock_reserve(setup_elfcorehdr, setup_elfcorehdr_size); - } -#endif + mips_reserve_vmcore(); mips_parse_crashkernel(); #ifdef CONFIG_KEXEC |