diff options
Diffstat (limited to 'kernel/crash_core.c')
| -rw-r--r-- | kernel/crash_core.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/kernel/crash_core.c b/kernel/crash_core.c index 71122e01623c..07b26df453a9 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -9,12 +9,15 @@ #include <linux/init.h> #include <linux/utsname.h> #include <linux/vmalloc.h> +#include <linux/sizes.h> #include <asm/page.h> #include <asm/sections.h> #include <crypto/sha1.h> +#include "kallsyms_internal.h" + /* vmcoreinfo stuff */ unsigned char *vmcoreinfo_data; size_t vmcoreinfo_size; @@ -43,6 +46,15 @@ static int __init parse_crashkernel_mem(char *cmdline, unsigned long long *crash_base) { char *cur = cmdline, *tmp; + unsigned long long total_mem = system_ram; + + /* + * Firmware sometimes reserves some memory regions for its own use, + * so the system memory size is less than the actual physical memory + * size. Work around this by rounding up the total size to 128M, + * which is enough for most test cases. + */ + total_mem = roundup(total_mem, SZ_128M); /* for each entry of the comma-separated list */ do { @@ -87,13 +99,13 @@ static int __init parse_crashkernel_mem(char *cmdline, return -EINVAL; } cur = tmp; - if (size >= system_ram) { + if (size >= total_mem) { pr_warn("crashkernel: invalid size\n"); return -EINVAL; } /* match ? */ - if (system_ram >= start && system_ram < end) { + if (total_mem >= start && total_mem < end) { *crash_size = size; break; } @@ -480,6 +492,18 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE); #endif +#ifdef CONFIG_KALLSYMS + VMCOREINFO_SYMBOL(kallsyms_names); + VMCOREINFO_SYMBOL(kallsyms_token_table); + VMCOREINFO_SYMBOL(kallsyms_token_index); +#ifdef CONFIG_KALLSYMS_BASE_RELATIVE + VMCOREINFO_SYMBOL(kallsyms_offsets); + VMCOREINFO_SYMBOL(kallsyms_relative_base); +#else + VMCOREINFO_SYMBOL(kallsyms_addresses); +#endif /* CONFIG_KALLSYMS_BASE_RELATIVE */ +#endif /* CONFIG_KALLSYMS */ + arch_crash_save_vmcoreinfo(); update_vmcoreinfo_note(); |