The patch titled
Subject: loongarch, crash: wrap crash dumping code into crash related ifdefs
has been added to the -mm mm-unstable branch. Its filename is
loongarch-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/loongarch-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Baoquan He <bhe@xxxxxxxxxx>
Subject: loongarch, crash: wrap crash dumping code into crash related ifdefs
Date: Fri, 19 Jan 2024 22:52:41 +0800
Now crash codes under kernel/ folder has been split out from kexec
code, crash dumping can be separated from kexec reboot in config
items on loongarch with some adjustments.
Here wrap up crash dumping codes with CONFIG_CRASH_DUMP ifdeffery, and
use IS_ENABLED(CONFIG_CRASH_RESERVE) check to decide if compiling
in the crashkernel reservation code.
Link: https://lkml.kernel.org/r/20240119145241.769622-15-bhe@xxxxxxxxxx
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx>
Cc: Pingfan Liu <piliu@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/kernel/setup.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/arch/loongarch/kernel/setup.c~loongarch-crash-wrap-crash-dumping-code-into-crash-related-ifdefs
+++ a/arch/loongarch/kernel/setup.c
@@ -258,11 +258,13 @@ static void __init arch_reserve_vmcore(v
static void __init arch_parse_crashkernel(void)
{
-#ifdef CONFIG_KEXEC
int ret;
unsigned long long total_mem;
unsigned long long crash_base, crash_size;
+ if (!IS_ENABLED(CONFIG_CRASH_RESERVE))
+ return;
+
total_mem = memblock_phys_mem_size();
ret = parse_crashkernel(boot_command_line, total_mem,
&crash_size, &crash_base,
@@ -283,7 +285,6 @@ static void __init arch_parse_crashkerne
crashk_res.start = crash_base;
crashk_res.end = crash_base + crash_size - 1;
-#endif
}
static void __init fdt_setup(void)
@@ -468,7 +469,7 @@ static void __init resource_init(void)
request_resource(res, &bss_resource);
}
-#ifdef CONFIG_KEXEC
+#ifdef CONFIG_CRASH_RESERVE
if (crashk_res.start < crashk_res.end) {
insert_resource(&iomem_resource, &crashk_res);
pr_info("Reserving %ldMB of memory at %ldMB for crashkernel\n",
_
Patches currently in -mm which might be from bhe@xxxxxxxxxx are
mm-vmalloc-remove-vmap_area_list.patch
kexec-split-crashkernel-reservation-code-out-from-crash_corec.patch
crash-split-vmcoreinfo-exporting-code-out-from-crash_corec.patch
crash-remove-dependency-of-fa_dump-on-crash_dump.patch
crash-split-crash-dumping-code-out-from-kexec_corec.patch
crash-clean-up-kdump-related-config-items.patch
x86-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
arm64-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
ppc-crash-enforce-kexec-and-kexec_file-to-select-crash_dump.patch
s390-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
sh-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
arm-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
mips-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
riscv-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
loongarch-crash-wrap-crash-dumping-code-into-crash-related-ifdefs.patch
panic-suppress-gnu_printf-warning.patch
