diff options
| author | David Daney <david.daney@cavium.com> | 2017-10-12 14:02:28 -0700 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2017-10-16 09:01:28 +0200 |
| commit | 508c7d45e270bfda0a68fd349070af873f0984bc (patch) | |
| tree | 7863c7ae7a00924f5246dc5c1427b307e6e026ae | |
| parent | 552bfbfc00eeaef773e8746867b44cd162c9a0dd (diff) | |
kexec-tools: mips: Try to include bss in kernel vmcore file.
The kernel message buffers, as well as a lot of other useful data
reside in the bss section. Without this vmcore-dmesg cannot work, and
debugging with a core dump is much more difficult.
Try to add the /proc/iomem "Kernel bss" section to vmcore. If it is
not found, just do what we used to do and use "Kernel data" instead.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
| -rw-r--r-- | kexec/arch/mips/crashdump-mips.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kexec/arch/mips/crashdump-mips.c b/kexec/arch/mips/crashdump-mips.c index 22fc38e..9ab041a 100644 --- a/kexec/arch/mips/crashdump-mips.c +++ b/kexec/arch/mips/crashdump-mips.c @@ -74,7 +74,10 @@ static int get_kernel_vaddr_and_size(struct crash_elf_info *elf_info, elf_info->kern_vaddr_start = elf_info->kern_paddr_start | start_offset; - if (parse_iomem_single("Kernel data\n", NULL, &end) == 0) { + /* If "Kernel bss" exists, the kernel ends there, else fall + * through and say that it ends at "Kernel data" */ + if (parse_iomem_single("Kernel bss\n", NULL, &end) == 0 || + parse_iomem_single("Kernel data\n", NULL, &end) == 0) { elf_info->kern_size = end - elf_info->kern_paddr_start; dbgprintf("kernel_vaddr= 0x%llx paddr %llx\n", elf_info->kern_vaddr_start, |