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5e4bb476c0
split kexec-tools into two packages, kexec and kdump. * kexec to simply execute a new kernel * kdump is for loading and collecting debris of a crashed kernel with support for kdump forensics. In order to properly support booting into a crashkernel, an init script as well as UCI configuration has been added. As modifying the kernel cmdline is required for this to work in x86 platforms use an uci-defaults script to modify /boot/grub/grub.cfg. To test collecting crash information, use the 'c' sysrq-trigger, ie. echo c > /proc/sysrq-trigger This should result in the crash kernel being executed and (depending on the configution) dmesg and/or vmcore getting saved. To check if the crash kernel was loaded properly, use the 'status' command of the kdump init script. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
137 lines
3.5 KiB
Makefile
137 lines
3.5 KiB
Makefile
#
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# Copyright (C) 2006-2012 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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PKG_NAME:=kexec-tools
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PKG_VERSION:=2.0.14
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PKG_RELEASE:=1
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
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PKG_SOURCE_URL:=@KERNEL/linux/utils/kernel/kexec
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PKG_HASH:=ffb2e7e99d9d08754c6bc1922aed3c000094f318665d82a72ecc76c4ff1c0dc6
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PKG_FIXUP:=autoreconf
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PKG_CONFIG_DEPENDS := CONFIG_KEXEC_ZLIB CONFIG_KEXEC_LZMA
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include $(INCLUDE_DIR)/package.mk
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define Package/kexec-tools/Default
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SECTION:=utils
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CATEGORY:=Utilities
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URL:=http://kernel.org/pub/linux/kernel/people/horms/kexec-tools/
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MAINTAINER:=Florian Fainelli <florian@openwrt.org>
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endef
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define Package/kexec-tools
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$(call Package/kexec-tools/Default)
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TITLE:=kexec-tools transition meta package
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DEPENDS:=+kexec
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endef
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define Package/kexec-tools/description
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kexec is a set of system calls that allows you to load
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another kernel from the currently executing Linux kernel.
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The kexec utility allows to load and boot another kernel.
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endef
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define Package/kexec
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$(call Package/kexec-tools/Default)
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TITLE:=Kernel boots kernel
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DEPENDS:=\
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@armeb||@arm||@i386||@x86_64||@powerpc64||@mipsel||@mips \
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+KEXEC_ZLIB:zlib +KEXEC_LZMA:liblzma @KERNEL_KEXEC
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endef
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define Package/kexec/description
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The kexec utility allows to load and boot another kernel.
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endef
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define Package/kdump
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$(call Package/kexec-tools/Default)
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TITLE:=Kernel crash analysis
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DEPENDS:=+kexec @i386||@x86_64||@arm @KERNEL_CRASH_DUMP
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endef
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define Package/kdump/description
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The kdump package allows to automatically boot into a
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special kernel for analyzing kernel crashes using kdump.
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endef
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define Package/kexec/config
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source "$(SOURCE)/Config.in"
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endef
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KEXEC_TARGET_NAME:=$(ARCH)-linux-$(TARGET_SUFFIX)
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CONFIGURE_ARGS = \
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--target=$(KEXEC_TARGET_NAME) \
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--host=$(REAL_GNU_TARGET_NAME) \
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--build=$(GNU_HOST_NAME) \
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--program-prefix="" \
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--program-suffix="" \
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--prefix=/usr \
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--exec-prefix=/usr \
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--bindir=/usr/bin \
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--sbindir=/usr/sbin \
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--libexecdir=/usr/lib \
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--sysconfdir=/etc \
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$(if $(CONFIG_KEXEC_ZLIB),--with,--without)-zlib \
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$(if $(CONFIG_KEXEC_LZMA),--with,--without)-lzma \
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TARGET_LD="$(TARGET_CROSS)ld"
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TARGET_CFLAGS += -ffunction-sections -fdata-sections
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TARGET_LDFLAGS += -Wl,--gc-sections
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CONFIGURE_VARS += \
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BUILD_CC="$(HOSTCC)" \
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TARGET_CC="$(TARGET_CC)"
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define Build/Compile
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$(MAKE) -C $(PKG_BUILD_DIR) DESTDIR="$(PKG_INSTALL_DIR)" all install
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endef
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define Package/kexec-tools/install
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:
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endef
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define Package/kexec/install
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$(INSTALL_DIR) $(1)/usr/sbin
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/kexec $(1)/usr/sbin
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# make a link for compatability with other distros
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$(INSTALL_DIR) $(1)/sbin
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$(LN) ../usr/sbin/kexec $(1)/sbin/kexec
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endef
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define Package/kdump/install
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$(INSTALL_DIR) $(1)/usr/sbin $(1)/etc/init.d $(1)/etc/config $(1)/etc/uci-defaults
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/kdump $(PKG_INSTALL_DIR)/usr/sbin/vmcore-dmesg $(1)/usr/sbin
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$(INSTALL_BIN) ./files/kdump.init $(1)/etc/init.d/kdump
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$(INSTALL_BIN) ./files/kdump.defaults $(1)/etc/uci-defaults/kdump
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$(INSTALL_CONF) ./files/kdump.config $(1)/etc/config/kdump
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endef
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define Package/kdump/prerm
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#!/bin/sh
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case $$(uname -m) in
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i?86|x86_64)
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if grep -q " crashkernel=" /boot/grub/grub.cfg; then
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mount /boot -o remount,rw
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sed -i 's/ crashkernel=[^ ]*//' /boot/grub/grub.cfg
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mount /boot -o remount,ro
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fi
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;;
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esac
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endef
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$(eval $(call BuildPackage,kexec-tools))
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$(eval $(call BuildPackage,kexec))
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$(eval $(call BuildPackage,kdump))
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