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drivers/base/cpu: crash data showing should depends on KEXEC_CORE

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After commit 88a6f89944 ("crash: memory and CPU hotplug sysfs
attributes"), on x86_64, if only below kernel configs related to kdump are
set, compiling error are triggered.

----
CONFIG_CRASH_CORE=y
CONFIG_KEXEC_CORE=y
CONFIG_CRASH_DUMP=y
CONFIG_CRASH_HOTPLUG=y
------

------------------------------------------------------
drivers/base/cpu.c: In function `crash_hotplug_show':
drivers/base/cpu.c:309:40: error: implicit declaration of function `crash_hotplug_cpu_support'; did you mean `crash_hotplug_show'? [-Werror=implicit-function-declaration]
  309 |         return sysfs_emit(buf, "%d\n", crash_hotplug_cpu_support());
      |                                        ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                                        crash_hotplug_show
cc1: some warnings being treated as errors
------------------------------------------------------

CONFIG_KEXEC is used to enable kexec_load interface, the
crash_notes/crash_notes_size/crash_hotplug showing depends on
CONFIG_KEXEC is incorrect. It should depend on KEXEC_CORE instead.

Fix it now.

Link: https://lkml.kernel.org/r/20231128055248.659808-1-bhe@redhat.com
Fixes: 88a6f89944 ("crash: memory and CPU hotplug sysfs attributes")
Signed-off-by: Baoquan He <bhe@redhat.com>
Tested-by: Ignat Korchagin <ignat@cloudflare.com>	[compile-time only]
Tested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Eric DeVolder <eric_devolder@yahoo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Baoquan He 2023-11-28 13:52:48 +08:00 committed by Andrew Morton
parent 7d6fa31a2f
commit 4e9e2e4c65
1 changed files with 3 additions and 3 deletions
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6
drivers/base/cpu.c
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@ -144,7 +144,7 @@ static DEVICE_ATTR(release, S_IWUSR, NULL, cpu_release_store);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
#endif /* CONFIG_HOTPLUG_CPU */
#ifdef CONFIG_KEXEC
#ifdef CONFIG_KEXEC_CORE
#include <linux/kexec.h>
static ssize_t crash_notes_show(struct device *dev,
@ -189,14 +189,14 @@ static const struct attribute_group crash_note_cpu_attr_group = {
#endif
static const struct attribute_group *common_cpu_attr_groups[] = {
#ifdef CONFIG_KEXEC
#ifdef CONFIG_KEXEC_CORE
&crash_note_cpu_attr_group,
#endif
NULL
};
static const struct attribute_group *hotplugable_cpu_attr_groups[] = {
#ifdef CONFIG_KEXEC
#ifdef CONFIG_KEXEC_CORE
&crash_note_cpu_attr_group,
#endif
NULL