| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 13 Jan 2017 12:06:48 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Rafael Wysocki <rjw@...ysocki.net>, Shuah Khan <shuah@...nel.org>
Cc: linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org,
Vincent Guittot <vincent.guittot@...aro.org>,
linux-kselftest@...r.kernel.org,
Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH 4/4] selftest: cpufreq: Add special tests
This patch adds support for special tests which were reported on the PM
list over the years, which helped catching core bugs by several
developers.
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
tools/testing/selftests/cpufreq/Makefile | 2 +-
tools/testing/selftests/cpufreq/governor.sh | 7 ++
tools/testing/selftests/cpufreq/main.sh | 25 ++++-
tools/testing/selftests/cpufreq/special-tests.sh | 115 +++++++++++++++++++++++
4 files changed, 146 insertions(+), 3 deletions(-)
create mode 100755 tools/testing/selftests/cpufreq/special-tests.sh
diff --git a/tools/testing/selftests/cpufreq/Makefile b/tools/testing/selftests/cpufreq/Makefile
index 80c8727dcec1..3955cd96f3a2 100644
--- a/tools/testing/selftests/cpufreq/Makefile
+++ b/tools/testing/selftests/cpufreq/Makefile
@@ -1,7 +1,7 @@
all:
TEST_PROGS := main.sh
-TEST_FILES := cpu.sh cpufreq.sh governor.sh module.sh
+TEST_FILES := cpu.sh cpufreq.sh governor.sh module.sh special-tests.sh
include ../lib.mk
diff --git a/tools/testing/selftests/cpufreq/governor.sh b/tools/testing/selftests/cpufreq/governor.sh
index 2e42432892ab..def645103555 100755
--- a/tools/testing/selftests/cpufreq/governor.sh
+++ b/tools/testing/selftests/cpufreq/governor.sh
@@ -71,6 +71,13 @@ __switch_governor()
echo $2 > $CPUFREQROOT/$1/scaling_governor
}
+# param:
+# $1: cpu, $2: governor
+__switch_governor_for_cpu()
+{
+ echo $2 > $CPUROOT/$1/cpufreq/scaling_governor
+}
+
# SWITCH GOVERNORS
# $1: cpu, $2: governor
diff --git a/tools/testing/selftests/cpufreq/main.sh b/tools/testing/selftests/cpufreq/main.sh
index 2515867ac9de..01bac76ac0ec 100755
--- a/tools/testing/selftests/cpufreq/main.sh
+++ b/tools/testing/selftests/cpufreq/main.sh
@@ -4,6 +4,7 @@ source cpu.sh
source cpufreq.sh
source governor.sh
source module.sh
+source special-tests.sh
FUNC=basic # do basic tests by default
OUTFILE=cpufreq_selftest
@@ -19,7 +20,11 @@ helpme()
[-t <basic: Basic cpufreq testing
suspend: suspend/resume,
hibernate: hibernate/resume,
- modtest: test driver or governor modules. Only to be used with -d or -g options>]
+ modtest: test driver or governor modules. Only to be used with -d or -g options,
+ sptest1: Simple governor switch to produce lockdep.
+ sptest2: Concurrent governor switch to produce lockdep.
+ sptest3: Governor races, shuffle between governors quickly.
+ sptest4: CPU hotplugs with updates to cpufreq files.>]
[-d <driver's module name: only with \"-t modtest>\"]
[-g <governor's module name: only with \"-t modtest>\"]
\n"
@@ -67,7 +72,7 @@ parse_arguments()
helpme
;;
- t) # --func_type (Function to perform: basic, suspend, hibernate, modtest (default: basic))
+ t) # --func_type (Function to perform: basic, suspend, hibernate, modtest, sptest1/2/3/4 (default: basic))
FUNC=$OPTARG
;;
@@ -136,6 +141,22 @@ do_test()
fi
;;
+ "sptest1")
+ simple_lockdep
+ ;;
+
+ "sptest2")
+ concurrent_lockdep
+ ;;
+
+ "sptest3")
+ governor_race
+ ;;
+
+ "sptest4")
+ hotplug_with_updates
+ ;;
+
*)
echo "Invalid [-f] function type"
helpme
diff --git a/tools/testing/selftests/cpufreq/special-tests.sh b/tools/testing/selftests/cpufreq/special-tests.sh
new file mode 100755
index 000000000000..58b730f23ef7
--- /dev/null
+++ b/tools/testing/selftests/cpufreq/special-tests.sh
@@ -0,0 +1,115 @@
+#!/bin/bash
+#
+# Special test cases reported by people
+
+# Testcase 1: Reported here: http://marc.info/?l=linux-pm&m=140618592709858&w=2
+
+# protect against multiple inclusion
+if [ $FILE_SPECIAL ]; then
+ return 0
+else
+ FILE_SPECIAL=DONE
+fi
+
+source cpu.sh
+source cpufreq.sh
+source governor.sh
+
+# Test 1
+# $1: policy
+__simple_lockdep()
+{
+ # switch to ondemand
+ __switch_governor $1 "ondemand"
+
+ # cat ondemand files
+ local ondir=$(find_gov_directory $1 "ondemand")
+ if [ -z $ondir ]; then
+ printf "${FUNCNAME[0]}Ondemand directory not created, quit"
+ return
+ fi
+
+ cat $ondir/*
+
+ # switch to conservative
+ __switch_governor $1 "conservative"
+}
+
+simple_lockdep()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ for_each_policy __simple_lockdep
+}
+
+# Test 2
+# $1: policy
+__concurrent_lockdep()
+{
+ for i in `seq 0 100`; do
+ __simple_lockdep $1
+ done
+}
+
+concurrent_lockdep()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ for_each_policy_concurrent __concurrent_lockdep
+}
+
+# Test 3
+quick_shuffle()
+{
+ # this is called concurrently from governor_race
+ for I in `seq 1000`
+ do
+ echo ondemand | sudo tee $CPUFREQROOT/policy*/scaling_governor &
+ echo userspace | sudo tee $CPUFREQROOT/policy*/scaling_governor &
+ done
+}
+
+governor_race()
+{
+ printf "** Test: Running ${FUNCNAME[0]} **\n"
+
+ # run 8 concurrent instances
+ for I in `seq 8`
+ do
+ quick_shuffle &
+ done
+}
+
+# Test 4
+# $1: cpu
+hotplug_with_updates_cpu()
+{
+ local filepath="$CPUROOT/$1/cpufreq"
+
+ # switch to ondemand
+ __switch_governor_for_cpu $1 "ondemand"
+
+ for i in `seq 1 5000`
+ do
+ reboot_cpu $1
+ done &
+
+ local freqs=$(cat $filepath/scaling_available_frequencies)
+ local oldfreq=$(cat $filepath/scaling_min_freq)
+
+ for j in `seq 1 5000`
+ do
+ # Set all frequencies one-by-one
+ for freq in $freqs; do
+ echo $freq > $filepath/scaling_min_freq
+ done
+ done
+
+ # restore old freq
+ echo $oldfreq > $filepath/scaling_min_freq
+}
+
+hotplug_with_updates()
+{
+ for_each_non_boot_cpu hotplug_with_updates_cpu
+}
--
2.7.1.410.g6faf27b
Powered by blists - more mailing lists