1#!/bin/bash
2#
3# Kernel-version-dependent shell functions for the rest of the scripts.
4#
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 2 of the License, or
8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program; if not, you can access it online at
17# http://www.gnu.org/licenses/gpl-2.0.html.
18#
19# Copyright (C) IBM Corporation, 2013
20#
21# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
22
23# rcutorture_param_n_barrier_cbs bootparam-string
24#
25# Adds n_barrier_cbs rcutorture module parameter to kernels having it.
26rcutorture_param_n_barrier_cbs () {
27	if echo $1 | grep -q "rcutorture\.n_barrier_cbs"
28	then
29		:
30	else
31		echo rcutorture.n_barrier_cbs=4
32	fi
33}
34
35# rcutorture_param_onoff bootparam-string config-file
36#
37# Adds onoff rcutorture module parameters to kernels having it.
38rcutorture_param_onoff () {
39	if ! bootparam_hotplug_cpu "$1" && configfrag_hotplug_cpu "$2"
40	then
41		echo CPU-hotplug kernel, adding rcutorture onoff. 1>&2
42		echo rcutorture.onoff_interval=3 rcutorture.onoff_holdoff=30
43	fi
44}
45
46# per_version_boot_params bootparam-string config-file seconds
47#
48# Adds per-version torture-module parameters to kernels supporting them.
49per_version_boot_params () {
50	echo $1 `rcutorture_param_onoff "$1" "$2"` \
51		`rcutorture_param_n_barrier_cbs "$1"` \
52		rcutorture.stat_interval=15 \
53		rcutorture.shutdown_secs=$3 \
54		rcutorture.torture_runnable=1 \
55		rcutorture.test_no_idle_hz=1 \
56		rcutorture.verbose=1
57}
58