[LTP] [PATCH RFC 9/9] ftrace_stress: add two new tests
Li Wang
liwang@redhat.com
Fri Mar 4 09:24:58 CET 2016
From: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
---
testcases/kernel/tracing/ftrace_test/ftrace_lib.sh | 2 +
.../ftrace_stress/ftrace_set_ftrace_filter.sh | 103 +++++++++++++++++++++
.../ftrace_stress/ftrace_tracing_cpumask.sh | 51 ++++++++++
.../tracing/ftrace_test/ftrace_stress_test.sh | 3 +-
4 files changed, 158 insertions(+), 1 deletion(-)
create mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_filter.sh
create mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_cpumask.sh
diff --git a/testcases/kernel/tracing/ftrace_test/ftrace_lib.sh b/testcases/kernel/tracing/ftrace_test/ftrace_lib.sh
index 81af617..5fceb80 100755
--- a/testcases/kernel/tracing/ftrace_test/ftrace_lib.sh
+++ b/testcases/kernel/tracing/ftrace_test/ftrace_lib.sh
@@ -42,6 +42,7 @@ save_old_setting()
old_trace_options=( `cat trace_options` )
old_tracing_on=`cat tracing_on`
old_buffer_size=`cat buffer_size_kb`
+ old_tracing_cpumask=`cat tracing_cpumask`
if [ -e tracing_enabled ]; then
old_tracing_enabled=`cat tracing_enabled`
@@ -69,6 +70,7 @@ restore_old_setting()
echo nop > current_tracer
echo 0 > events/enable
echo 0 > tracing_max_latency 2> /dev/null
+ echo $old_tracing_cpumask > tracing_cpumask
if [ -e trace_clock ]; then
echo local > trace_clock
diff --git a/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_filter.sh b/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_filter.sh
new file mode 100755
index 0000000..2f9a143
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_filter.sh
@@ -0,0 +1,103 @@
+#! /bin/sh
+###########################################################################
+## ##
+## Copyright (c) 2015, Red Hat Inc. ##
+## ##
+## This program is free software: you can redistribute it and/or modify ##
+## it under the terms of the GNU General Public License as published by ##
+## the Free Software Foundation, either version 3 of the License, or ##
+## (at your option) any later version. ##
+## ##
+## This program is distributed in the hope that it will be useful, ##
+## but WITHOUT ANY WARRANTY; without even the implied warranty of ##
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ##
+## GNU General Public License for more details. ##
+## ##
+## You should have received a copy of the GNU General Public License ##
+## along with this program. If not, see <http://www.gnu.org/licenses/>. ##
+## ##
+## Author: Chunyu Hu <chuhu@redhat.com> ##
+## ##
+###########################################################################
+
+triggers=( traceon traceoff enable_event disable_event snapshot\
+ dump cpudump stacktrace module function )
+n_triggers=${#triggers}
+
+module_pick()
+{
+ nr_module=$(lsmod | wc -l)
+ pick_one=$(( (RANDOM % nr_module) +1 ))
+ picked_module=$(lsmod | sed -n ''$pick_one'p')
+}
+
+nr_functions=$(cat $TRACING_PATH/available_filter_functions|wc -l)
+
+function_pick()
+{
+ if [ -f $TRACING_PATH/available_filter_functions ]; then
+ local pick_one=$(( (RANDOM % nr_functions) + 1 ))
+ picked_function=$(cat $TRACING_PATH/available_filter_functions |\
+ sed -n ''$pick_one'p'|awk '{print $1}')
+ echo $picked_function
+ else
+ echo "\*sched\*"
+ fi
+}
+
+event_pick()
+{
+ if [ -f $TRACING_PATH/available_events ]; then
+ nr_events=$(cat $TRACING_PATH/available_events | wc -l)
+ local pick_one=$(( (RANDOM % nr_events) + 1 ))
+ picked_event=$(cat $TRACING_PATH/available_events | sed -n ''$pick_one'p')
+ echo "$picked_event"
+ else
+ echo "sched:sched_switch"
+ fi
+}
+
+filter_formatter()
+{
+ local count=$(( (RANDOM % 5) + 1 ))
+ function_name=$(function_pick)
+ case $1 in
+ traceon|traceoff|snapshot|dump|cpudump|stacktrace|module|function)
+ format=$1
+ ;;
+ enable_event|disable_event)
+ event_sys_name=$(event_pick)
+ format=$1:$event_sys_name
+ ;;
+ module)
+ module_pick
+ echo "$picked_module:\*"
+ return
+ ;;
+ function)
+ echo "$picked_function"
+ return
+ ;;
+ *)
+ format=$1
+ ;;
+ esac
+ ((count)) && format=$format:$count
+ echo $function_name:$format
+}
+
+for ((; ;))
+{
+ cat $TRACING_PATH/set_ftrace_filter > /dev/null
+ trigger_index=$((RANDOM % n_triggers))
+ trigger_name=${triggers[$trigger_index]}
+ filter_format=$(filter_formatter $trigger_name)
+
+ echo "$filter_format" > $TRACING_PATH/set_ftrace_filter
+ [ $? -ne 0 ] && echo "setup filter <$filter_format> failed"
+
+ sleep 1
+
+ echo "!$filter_format" > $TRACING_PATH/set_ftrace_filter
+ [ $? -ne 0 ] && echo "remove filter <$filter_format> failed"
+}
diff --git a/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_cpumask.sh b/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_cpumask.sh
new file mode 100755
index 0000000..28bbc27
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_cpumask.sh
@@ -0,0 +1,51 @@
+#! /bin/sh
+
+###########################################################################
+## ##
+## Copyright (c) 2015, Red Hat Inc. ##
+## ##
+## This program is free software: you can redistribute it and/or modify ##
+## it under the terms of the GNU General Public License as published by ##
+## the Free Software Foundation, either version 3 of the License, or ##
+## (at your option) any later version. ##
+## ##
+## This program is distributed in the hope that it will be useful, ##
+## but WITHOUT ANY WARRANTY; without even the implied warranty of ##
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ##
+## GNU General Public License for more details. ##
+## ##
+## You should have received a copy of the GNU General Public License ##
+## along with this program. If not, see <http://www.gnu.org/licenses/>. ##
+## ##
+## Author: Chunyu Hu <chuhu@redhat.com> ##
+## ##
+###########################################################################
+
+nr_cpus=`tst_ncpus`
+
+get_random_value()
+{
+ local max=$1
+ local min=${2:-0}
+ local random=${RANDOM:-$(date +%N)}
+ echo $(( random % max ))
+}
+
+get_test_cpumask()
+{
+ local random=${RANDOM:-$(date +%N)}
+ local set_cnt=$(get_random_value $nr_cpus);
+ mask=0
+ for ((c=0; c<set_cnt; c++));do
+ local cpuid=$(get_random_value $nr_cpus)
+ mask=$(( mask| (1<<$cpuid) ))
+ done
+ mask=`echo $mask | awk '{printf "%x",$0}'`
+}
+
+for ((; ;))
+{
+ get_test_cpumask
+ echo $mask > $TRACING_PATH/tracing_cpumask
+ sleep 5
+}
diff --git a/testcases/kernel/tracing/ftrace_test/ftrace_stress_test.sh b/testcases/kernel/tracing/ftrace_test/ftrace_stress_test.sh
index d1be49a..49cae86 100755
--- a/testcases/kernel/tracing/ftrace_test/ftrace_stress_test.sh
+++ b/testcases/kernel/tracing/ftrace_test/ftrace_stress_test.sh
@@ -31,7 +31,8 @@ test_targets=" \
trace_pipe current_tracer ftrace_enabled function_profile_enabled \
set_event set_ftrace_pid stack_max_size stack_trace trace trace_clock \
trace_options trace_stat tracing_enabled tracing_max_latency \
-tracing_on function_profile_enabled buffer_size_kb"
+tracing_on function_profile_enabled buffer_size_kb tracing_cpumask \
+set_ftrace_filter"
get_skip_targets()
{
--
1.8.3.1
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