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powerpc: update fadump sysfs node path 

The fadump sysfs nodes /sys/kernel/fadump_[enabled|registered], have
been relocated to /sys/kernel/fadump/[enabled|registered] by kernel
commits d418b19f34ed ("powerpc/fadump: Reorganize /sys/kernel/fadump_*
sysfs files").

To ensure compatibility, symbolic links were added for each relocated
sysfs entry. Nonetheless, note that these symbolic links might be
removed later, as they have been deprecated by kernel commit
3f5f1f22ef10 ("Documentation/ABI: Mark /sys/kernel/fadump_* sysfs files
deprecated")

This patch updates the scripts to use the updated fadump sysfs files.

Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
This commit is contained in:
Sourabh Jain 2023-08-17 16:38:35 +05:30 committed by Coiby Xu
parent 98c7c6ee6a
commit fc7c65312a
3 changed files with 4 additions and 4 deletions
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2
98-kexec.rules.ppc64
View File

@ -17,6 +17,6 @@ GOTO="kdump_reload_end"
LABEL="kdump_reload_cpu"
RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump_enabled || cat /sys/kernel/fadump_enabled | grep 0 || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump/enabled || cat /sys/kernel/fadump/enabled | grep 0 || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
LABEL="kdump_reload_end"

2
fadump-howto.txt
View File

@ -137,7 +137,7 @@ Then, start up kdump as well:
# systemctl start kdump.service
This should turn on the firmware assisted functionality in kernel by
echo'ing 1 to /sys/kernel/fadump_registered, leaving the system ready
echo'ing 1 to /sys/kernel/fadump/registered, leaving the system ready
to capture a vmcore upon crashing. For journaling filesystems like XFS an
additional step is required to ensure bootloader does not pick the
older initrd (without vmcore capture scripts):

4
kdump-lib.sh
View File

@ -8,8 +8,8 @@ else
. /lib/kdump/kdump-lib-initramfs.sh
fi
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
FADUMP_REGISTER_SYS_NODE="/sys/kernel/fadump_registered"
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump/enabled"
FADUMP_REGISTER_SYS_NODE="/sys/kernel/fadump/registered"
is_uki()
{