rpms/kexec-tools
5
0
Fork 0
Code Issues Pull Requests Releases Activity

fadump/udev: do not re-register fadump if kernel hotplug ready

Browse Source 
With the introduction of kernel commit c6c5b14dac0d ("powerpc: make fadump
resilient with memory add/remove events") linux kernel now internally manages
the update of elfcorehdr during memory add/remove events. So no need to
re-register fadump if the /sys/kernel/fadump/hotplug_ready is set to 1.

No impact for kernels that do not have /sys/kernel/fadump/hotplug_ready
sysfs.

Relevant kernel commit links:
1. https://msgid.link/20240422195932.1583833-2-sourabhjain@linux.ibm.com
2. https://msgid.link/20240422195932.1583833-3-sourabhjain@linux.ibm.com

Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
This commit is contained in:
Sourabh Jain 2024-04-26 18:17:49 +05:30 committed by Lichen Liu
parent 60e22375f8
commit a8523f55a8
No known key found for this signature in database
GPG Key ID: 2ED8215EF57B3D6C
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
98-kexec.rules.ppc64
View File

@ -15,7 +15,9 @@ GOTO="kdump_reload_end"
LABEL="kdump_reload_mem"
RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
# Don't re-register fadump if /sys/kernel/fadump/hotplug_ready sysfs is set to 1.
RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump/hotplug_ready || cat /sys/kernel/fadump/hotplug_ready | grep 1 || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
GOTO="kdump_reload_end"