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loongarch/kexec: refactor for kernel/Kconfig.kexec 

The kexec and crash kernel options are provided in the common
kernel/Kconfig.kexec. Utilize the common options and provide
the ARCH_SUPPORTS_ and ARCH_SELECTS_ entries to recreate the
equivalent set of KEXEC and CRASH options.

Link: https://lkml.kernel.org/r/20230712161545.87870-7-eric.devolder@oracle.com
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Eric DeVolder 2023-07-12 12:15:37 -04:00 committed by Andrew Morton
parent 91506f7e5d
commit 19e6dd0b61
1 changed files with 7 additions and 19 deletions
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arch/loongarch/Kconfig
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@ -538,28 +538,16 @@ config CPU_HAS_PREFETCH
bool
default y
config KEXEC
bool "Kexec system call"
select KEXEC_CORE
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
but it is independent of the system firmware. And like a reboot
you can start any kernel with it, not just Linux.
config ARCH_SUPPORTS_KEXEC
def_bool y
The name comes from the similarity to the exec system call.
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
config CRASH_DUMP
bool "Build kdump crash kernel"
config ARCH_SELECTS_CRASH_DUMP
def_bool y
depends on CRASH_DUMP
select RELOCATABLE
help
Generate crash dump after being started by kexec. This should
be normally only set in special crash dump kernels which are
loaded in the main kernel with kexec-tools into a specially
reserved region and then later executed after a crash by
kdump/kexec.
For more details see Documentation/admin-guide/kdump/kdump.rst
config RELOCATABLE
bool "Relocatable kernel"