[PATCH] Stop reloading kdump service on CPU hotplug event for FADump

[Sourabh Jain]

As FADump does not require an explicit elfcorehdr update whenever there is CPU
hotplug event so let's stop kdump service reload for FADump when CPU hotplug
event is triggered.

A new label is added to handle CPU and memory hotplug events separately. The
updated CPU hotplug event handler make sure that kdump service should not be
reloaded when FADump is configured.

Signed-off-by: Sourabh Jain <sourabhjain(a)linux.ibm.com&gt;
---
 98-kexec.rules.ppc64 | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/98-kexec.rules.ppc64 b/98-kexec.rules.ppc64
index 1a91220..a1c00a9 100644
--- a/98-kexec.rules.ppc64
+++ b/98-kexec.rules.ppc64
@@ -1,15 +1,22 @@
-SUBSYSTEM=="cpu", ACTION=="online", GOTO="kdump_reload"
-SUBSYSTEM=="memory", ACTION=="online", GOTO="kdump_reload"
-SUBSYSTEM=="memory", ACTION=="offline",
GOTO="kdump_reload"
+SUBSYSTEM=="cpu", ACTION=="online",
GOTO="kdump_reload_cpu"
+SUBSYSTEM=="memory", ACTION=="online",
GOTO="kdump_reload_mem"
+SUBSYSTEM=="memory", ACTION=="offline",
GOTO="kdump_reload_mem"
 
 GOTO="kdump_reload_end"
 
-LABEL="kdump_reload"
-
 # If kdump is not loaded, calling kdump-udev-throttle will end up
 # doing nothing, but systemd-run will always generate extra logs for
 # each call, so trigger the kdump-udev-throttler only if kdump
 # service is active to avoid unnecessary logs
+
+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'"
 
+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'"
+
 LABEL="kdump_reload_end"
-- 
2.26.2