diff options
| author | Sourabh Jain <sourabhjain@linux.ibm.com> | 2024-03-26 11:24:08 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-04-23 14:59:01 +1000 |
| commit | 118005713e35a1893c6ee47ab2926cca277737de (patch) | |
| tree | 49592de3fab94716f2311ae4f1f90de784cb0ed1 /include/linux/crash_core.h | |
| parent | 39cd87c4eb2b893354f3b850f916353f2658ae6f (diff) | |
crash: forward memory_notify arg to arch crash hotplug handler
In the event of memory hotplug or online/offline events, the crash
memory hotplug notifier `crash_memhp_notifier()` receives a
`memory_notify` object but doesn't forward that object to the
generic and architecture-specific crash hotplug handler.
The `memory_notify` object contains the starting PFN (Page Frame Number)
and the number of pages in the hot-removed memory. This information is
necessary for architectures like PowerPC to update/recreate the kdump
image, specifically `elfcorehdr`.
So update the function signature of `crash_handle_hotplug_event()` and
`arch_crash_handle_hotplug_event()` to accept the `memory_notify` object
as an argument from crash memory hotplug notifier.
Since no such object is available in the case of CPU hotplug event, the
crash CPU hotplug notifier `crash_cpuhp_online()` passes NULL to the
crash hotplug handler.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240326055413.186534-2-sourabhjain@linux.ibm.com
Diffstat (limited to 'include/linux/crash_core.h')
| -rw-r--r-- | include/linux/crash_core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h index d33352c2e386..647e928efee8 100644 --- a/include/linux/crash_core.h +++ b/include/linux/crash_core.h @@ -37,7 +37,7 @@ static inline void arch_kexec_unprotect_crashkres(void) { } #ifndef arch_crash_handle_hotplug_event -static inline void arch_crash_handle_hotplug_event(struct kimage *image) { } +static inline void arch_crash_handle_hotplug_event(struct kimage *image, void *arg) { } #endif int crash_check_update_elfcorehdr(void); |