3 ##############################################################################
4 ## Copyright (c) 2015 Intel Corp.
6 ## All rights reserved. This program and the accompanying materials
7 ## are made available under the terms of the Apache License, Version 2.0
8 ## which accompanies this distribution, and is available at
9 ## http://www.apache.org/licenses/LICENSE-2.0
10 ###############################################################################
15 KERNEL_VERSION=$( getKernelVersion )
16 if [ -z $KERNEL_VERSION ];then
17 echo "Kernel RPM not found"
20 rpmdir=${1:-"/root/workspace/rpm/"}
21 rpmpat="kernel-${KERNEL_VERSION}*.rpm"
27 if grep '[" ]'${key} /etc/default/grub > /dev/null ; then
28 sed -i 's/\([" ]\)'${key}'=[^ "]*/\1'${key}'='${val}'/' /etc/default/grub
30 sed -i 's/GRUB_CMDLINE_LINUX="\(.*\)"/GRUB_CMDLINE_LINUX="\1 '${key}'='${val}'"/' /etc/default/grub
34 # The script's caller should passing the rpm directory that is built out from
35 # build.sh. The default rpmdir is the one used by yardstick scripts.
37 # Install the kernel rpm
38 filenum=`ls -l ${rpmdir}/${rpmpat} |wc -l`
41 echo "No kernel rpm found in workspace/rpm"
43 elif [ $filenum -gt 1 ]
45 echo "Multiple kernel rpm found in workspace/rpm"
48 krpm=`find "${rpmdir}" -name "${rpmpat}"`
53 # Isolate CPUs from the general scheduler
54 config_grub 'isolcpus' ${host_isolcpus}
56 # Stop timer ticks on isolated CPUs whenever possible
57 config_grub 'nohz_full' ${host_isolcpus}
59 # Do not call RCU callbacks on isolated CPUs
60 config_grub 'rcu_nocbs' ${host_isolcpus}
62 # Enable intel iommu driver and disable DMA translation for devices
63 config_grub 'iommu' 'pt'
64 config_grub 'intel_iommu' 'on'
66 # Set HugeTLB pages to 1GB
67 config_grub 'default_hugepagesz' '1G'
68 config_grub 'hugepagesz' '1G'
70 # Disable machine check
71 config_grub 'mce' 'off'
73 ## Use polling idle loop to improve performance
74 config_grub 'idle' 'poll'
76 ## Disable clocksource verification at runtime
77 config_grub 'tsc' 'reliable'
81 grub2-mkconfig -o /boot/grub2/grub.cfg