From ec5e8461c194346c4341e3e8bb35bc06ad707d47 Mon Sep 17 00:00:00 2001 From: Chen Minqiang Date: Thu, 11 Jul 2019 22:34:03 +0800 Subject: x86: make crashdump works 1. KERNEL_CRASH_DUMP should depends on KERNEL_PROC_KCORE (kexec use it) 2. select crashkernel mem size by totalmem mem <= 256M disable crashkernel by default mem >= 4G use 256M for crashkernel mem >= 8G use 512M for crashkernel default use 128M 3. set BOOT_IMAGE in kdump.init 4. resolve a "Unhandled rela relocation: R_X86_64_PLT32" error Tested on x86_64 Signed-off-by: Chen Minqiang --- package/boot/kexec-tools/files/kdump.defaults | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'package/boot/kexec-tools/files/kdump.defaults') diff --git a/package/boot/kexec-tools/files/kdump.defaults b/package/boot/kexec-tools/files/kdump.defaults index 2f15e757bf..62366a2950 100644 --- a/package/boot/kexec-tools/files/kdump.defaults +++ b/package/boot/kexec-tools/files/kdump.defaults @@ -1,10 +1,22 @@ #!/bin/sh +# kB disable if mem low than 256MB +memtotal=`grep MemTotal /proc/meminfo | awk '{print $2}'` +if test $memtotal -le 262144; then + exit 0 +fi +KZ=128 +if test $memtotal -ge 8388608; then + KZ=512 +elif test $memtotal -ge 4194304; then + KZ=256 +fi + case $(uname -m) in i?86|x86_64) if ! grep -q crashkernel /boot/grub/grub.cfg; then mount /boot -o remount,rw - sed -i 's/linux.*/& crashkernel=32M@32M/' /boot/grub/grub.cfg + sed -i "s/linux.*/& crashkernel=${KZ}M/" /boot/grub/grub.cfg mount /boot -o remount,ro fi ;; -- cgit v1.2.3