|
 |
1bfeda |
From c4a0aef63df41a79e96c1276ac732ecde8d58d86 Mon Sep 17 00:00:00 2001
|
|
|
1bfeda |
From: =?UTF-8?q?Jaroslav=20=C5=A0karvada?= <jskarvad@redhat.com>
|
|
|
1bfeda |
Date: Thu, 22 Nov 2018 17:38:12 +0100
|
|
|
1bfeda |
Subject: [PATCH] functions: reworked setup_kvm_mod_low_latency to count with
|
|
|
1bfeda |
kernel changes
|
|
|
1bfeda |
MIME-Version: 1.0
|
|
|
1bfeda |
Content-Type: text/plain; charset=UTF-8
|
|
|
1bfeda |
Content-Transfer-Encoding: 8bit
|
|
|
1bfeda |
|
|
|
1bfeda |
It updates the KVM modprobe file if its content differs from what's
|
|
|
1bfeda |
supported on the current system. It may look a bit over-engineered, but
|
|
|
1bfeda |
it's done this way to lower the possibility of race condition.
|
|
|
1bfeda |
|
|
|
1bfeda |
Resolves: rhbz#1649408
|
|
|
1bfeda |
|
|
|
1bfeda |
Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
|
|
|
1bfeda |
---
|
|
|
1bfeda |
profiles/functions | 35 +++++++++++++++++++----------------
|
|
|
1bfeda |
1 file changed, 19 insertions(+), 16 deletions(-)
|
|
|
1bfeda |
|
|
|
1bfeda |
diff --git a/profiles/functions b/profiles/functions
|
|
|
1bfeda |
index 919409c..aab608a 100644
|
|
|
1bfeda |
--- a/profiles/functions
|
|
|
1bfeda |
+++ b/profiles/functions
|
|
|
1bfeda |
@@ -503,26 +503,29 @@ eee_set_normal_fsb() {
|
|
|
1bfeda |
|
|
|
1bfeda |
kvm_modprobe_file=/etc/modprobe.d/kvm.rt.tuned.conf
|
|
|
1bfeda |
|
|
|
1bfeda |
-setup_kvm_mod_low_latency()
|
|
|
1bfeda |
+teardown_kvm_mod_low_latency()
|
|
|
1bfeda |
{
|
|
|
1bfeda |
- if [ -f $kvm_modprobe_file ]; then
|
|
|
1bfeda |
- return
|
|
|
1bfeda |
- fi
|
|
|
1bfeda |
-
|
|
|
1bfeda |
- modinfo -p kvm | grep -q kvmclock_periodic_sync
|
|
|
1bfeda |
- if [ "$?" -eq 0 ]; then
|
|
|
1bfeda |
- echo "options kvm kvmclock_periodic_sync=0" > $kvm_modprobe_file
|
|
|
1bfeda |
- fi
|
|
|
1bfeda |
-
|
|
|
1bfeda |
- modinfo -p kvm_intel | grep -q ple_gap
|
|
|
1bfeda |
- if [ "$?" -eq 0 ]; then
|
|
|
1bfeda |
- echo "options kvm_intel ple_gap=0" >> $kvm_modprobe_file
|
|
|
1bfeda |
- fi
|
|
|
1bfeda |
+ rm -f $kvm_modprobe_file
|
|
|
1bfeda |
}
|
|
|
1bfeda |
|
|
|
1bfeda |
-teardown_kvm_mod_low_latency()
|
|
|
1bfeda |
+setup_kvm_mod_low_latency()
|
|
|
1bfeda |
{
|
|
|
1bfeda |
- rm -f $kvm_modprobe_file
|
|
|
1bfeda |
+ local HAS_KPS=""
|
|
|
1bfeda |
+ local HAS_PLE_GAP=""
|
|
|
1bfeda |
+ local WANTS_KPS=""
|
|
|
1bfeda |
+ local WANTS_PLE_GAP=""
|
|
|
1bfeda |
+
|
|
|
1bfeda |
+ modinfo -p kvm | grep -q kvmclock_periodic_sync && HAS_KPS=1
|
|
|
1bfeda |
+ modinfo -p kvm_intel | grep -q ple_gap && HAS_PLE_GAP=1
|
|
|
1bfeda |
+ grep -qs kvmclock_periodic_sync "$kvm_modprobe_file" && WANTS_KPS=1
|
|
|
1bfeda |
+ grep -qs ple_gap "$kvm_modprobe_file" && WANTS_PLE_GAP=1
|
|
|
1bfeda |
+
|
|
|
1bfeda |
+ if [ "$HAS_KPS" != "$WANTS_KPS" -o "$HAS_PLE_GAP" != "$WANTS_PLE_GAP" ]; then
|
|
|
1bfeda |
+ teardown_kvm_mod_low_latency
|
|
|
1bfeda |
+ [ "$HAS_KPS" ] && echo "options kvm kvmclock_periodic_sync=0" > $kvm_modprobe_file
|
|
|
1bfeda |
+ [ "$HAS_PLE_GAP" ] && echo "options kvm_intel ple_gap=0" >> $kvm_modprobe_file
|
|
|
1bfeda |
+ fi
|
|
|
1bfeda |
+ return 0
|
|
|
1bfeda |
}
|
|
|
1bfeda |
|
|
|
1bfeda |
#
|
|
|
1bfeda |
--
|
|
|
1bfeda |
2.14.5
|
|
|
1bfeda |
|