* [LTP] [PATCH] Add ftrace-stress-test to LTP
@ 2010-08-24 4:06 Li Zefan
2010-08-24 11:02 ` Subrata Modak
2010-08-25 5:31 ` Garrett Cooper
0 siblings, 2 replies; 9+ messages in thread
From: Li Zefan @ 2010-08-24 4:06 UTC (permalink / raw)
To: ltp-list
Cc: Frederic Weisbecker, Steven Rostedt, Eugene Teo, Ingo Molnar,
Andrew Morton
We test ftrace by forking processes to simultaneously and
constantly read/write different tracing files in debugfs
and procfs.
The test will be skipped if the kernel is older than 2.6.34,
mainly because it can crash old kernels.
The test will run by default and will run for 90 seconds.
To run this test only:
# ./runltp -f tracing
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
runltp | 3 +-
runtest/tracing | 2 +
testcases/kernel/Makefile | 2 +-
testcases/kernel/tracing/Makefile | 5 +
.../kernel/tracing/ftrace_stress_test/Makefile | 7 +
.../ftrace_stress_test/ftrace_get_page_size.c | 10 +
.../tracing/ftrace_stress_test/ftrace_kvercmp.c | 37 +++
.../ftrace_stress/ftrace_buffer_size.sh | 43 ++++
.../ftrace_stress/ftrace_current_tracer.sh | 34 +++
.../ftrace_stress/ftrace_ftrace_enabled.sh | 39 ++++
.../ftrace_stress/ftrace_profile_enabled.sh | 50 ++++
.../ftrace_stress/ftrace_set_event.sh | 44 ++++
.../ftrace_stress/ftrace_set_ftrace_pid.sh | 44 ++++
.../ftrace_stress/ftrace_stack_max_size.sh | 39 ++++
.../ftrace_stress/ftrace_stack_trace.sh | 46 ++++
.../ftrace_stress/ftrace_trace.sh | 27 +++
.../ftrace_stress/ftrace_trace_clock.sh | 46 ++++
.../ftrace_stress/ftrace_trace_options.sh | 42 ++++
.../ftrace_stress/ftrace_trace_pipe.sh | 43 ++++
.../ftrace_stress/ftrace_trace_stat.sh | 45 ++++
.../ftrace_stress/ftrace_tracing_enabled.sh | 39 ++++
.../ftrace_stress/ftrace_tracing_max_latency.sh | 38 +++
.../ftrace_stress/ftrace_tracing_on.sh | 39 ++++
.../ftrace_stress_test/ftrace_stress_test.sh | 237 ++++++++++++++++++++
24 files changed, 959 insertions(+), 2 deletions(-)
create mode 100644 runtest/tracing
create mode 100644 testcases/kernel/tracing/Makefile
create mode 100644 testcases/kernel/tracing/ftrace_stress_test/Makefile
create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
diff --git a/runltp b/runltp
index b385984..89b1717 100755
--- a/runltp
+++ b/runltp
@@ -593,7 +593,8 @@ main()
${LTPROOT}/runtest/numa \
${LTPROOT}/runtest/hugetlb \
${LTPROOT}/runtest/commands \
- ${LTPROOT}/runtest/hyperthreading
+ ${LTPROOT}/runtest/hyperthreading \
+ ${LTPROOT}/runtest/tracing
do
[ -e "$SCENFILES" ] || \
{
diff --git a/runtest/tracing b/runtest/tracing
new file mode 100644
index 0000000..ef3a048
--- /dev/null
+++ b/runtest/tracing
@@ -0,0 +1,2 @@
+#DESCRIPTION:Tracing testing
+ftrace-stress-test ftrace_stress_test.sh 90
diff --git a/testcases/kernel/Makefile b/testcases/kernel/Makefile
index e2a9d8e..8c50025 100644
--- a/testcases/kernel/Makefile
+++ b/testcases/kernel/Makefile
@@ -30,7 +30,7 @@ include $(top_srcdir)/include/mk/env_pre.mk
ifneq ($(UCLINUX),1)
SUBDIRS := containers connectors controllers fs hotplug io ipc mem \
numa performance_counters power_management pty sched \
- security syscalls timers
+ security syscalls timers tracing
else
SUBDIRS := syscalls
endif
diff --git a/testcases/kernel/tracing/Makefile b/testcases/kernel/tracing/Makefile
new file mode 100644
index 0000000..e9f96c3
--- /dev/null
+++ b/testcases/kernel/tracing/Makefile
@@ -0,0 +1,5 @@
+top_srcdir ?= ../../..
+
+include $(top_srcdir)/include/mk/env_pre.mk
+
+include $(top_srcdir)/include/mk/generic_trunk_target.mk
diff --git a/testcases/kernel/tracing/ftrace_stress_test/Makefile b/testcases/kernel/tracing/ftrace_stress_test/Makefile
new file mode 100644
index 0000000..e4a913a
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/Makefile
@@ -0,0 +1,7 @@
+top_srcdir ?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+
+INSTALL_TARGETS := *.sh ftrace_stress/*
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
new file mode 100644
index 0000000..b52a109
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
@@ -0,0 +1,10 @@
+#include <unistd.h>
+#include <stdio.h>
+
+int main(void)
+{
+ printf("%d\n", getpagesize());
+
+ return 0;
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
new file mode 100644
index 0000000..bd67b37
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
@@ -0,0 +1,37 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+int main(int argc, char **argv)
+{
+ struct utsname uval;
+ int k1, k2, k3;
+ int a1, a2, a3;
+ unsigned long r1, r2;
+
+ if (argc != 4) {
+ fprintf(stderr, "Wrong arguments!\n");
+ return -1;
+ }
+
+ a1 = strtol(argv[1], NULL, 10);
+ a2 = strtol(argv[2], NULL, 10);
+ a3 = strtol(argv[3], NULL, 10);
+
+ uname(&uval);
+
+ sscanf(uval.release, "%d.%d.%d", &k1, &k2, &k3);
+
+ r1 = (a1 << 16) + (a2 << 8) + a3;
+ r2 = (k1 << 16) + (k2 << 8) + k3;
+
+ if (r1 > r2)
+ return 0;
+ else if (r1 == r2)
+ return 1;
+ else
+ return 2;
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
new file mode 100755
index 0000000..af5a98e
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
@@ -0,0 +1,43 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=200
+
+# Use up to 10% of free memory
+free_mem=`cat /proc/meminfo | grep '^MemFree' | awk '{ print $2 }'`
+step=$(( $free_mem / 10 / $LOOP ))
+if [ $step -eq 0 ]; then
+ $step=1
+ LOOP=50
+fi
+
+for ((; ;))
+{
+ new_size=1
+ for ((i = 0; i < $LOOP; i++))
+ {
+ echo $new_size > "$TRACING_PATH"/buffer_size_kb
+ new_size=$(( $new_size + $step ))
+ }
+
+ for ((i = 0; i < $LOOP; i++))
+ {
+ new_size=$(( $new_size - $step ))
+ echo $new_size > "$TRACING_PATH"/buffer_size_kb
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
new file mode 100755
index 0000000..1baed96
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
@@ -0,0 +1,34 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=200
+
+for ((; ;))
+{
+ for ((i = 0; i < $LOOP; i++))
+ {
+ for tracer in `cat "$TRACING_PATH"/available_tracers`;
+ do
+ if [ "$tracer" == mmiotrace ]; then
+ continue
+ fi
+
+ echo $tracer > "$TRACING_PATH"/current_tracer 2> /dev/null
+ done
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
new file mode 100755
index 0000000..20bb234
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
@@ -0,0 +1,39 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_LOOP=1500
+count=0
+
+for ((; ;))
+{
+ count=$(( $count + 1 ))
+
+ for ((i = 0; i < $MAX_LOOP; i++))
+ {
+ echo 0 > /proc/sys/kernel/ftrace_enabled
+ echo 1 > /proc/sys/kernel/ftrace_enabled
+ }
+
+ enable=$(( $count % 3 ))
+
+ if [ $enable -eq 0 ]; then
+ echo 1 > /proc/sys/kernel/ftrace_enabled
+ else
+ echo 0 > /proc/sys/kernel/ftrace_enabled
+ fi
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
new file mode 100755
index 0000000..9c6162a
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# This program is free software; you can redistribute it and/or modify it #
+# under the terms of the GNU General Public License as published by the Free #
+# Software Foundation; either version 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_LOOP=1500
+count=0
+
+if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
+ should_skip=1
+else
+ should_skip=0
+fi
+
+for ((; ;))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ count=$(( $count + 1 ))
+
+ for ((i = 0; i < $MAX_LOOP; i++))
+ {
+ echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
+ echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
+ }
+
+ enable=$(( $count % 3 ))
+
+ if [ $enable -eq 0 ]; then
+ echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
+ else
+ echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
+ fi
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
new file mode 100755
index 0000000..f876414
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
@@ -0,0 +1,44 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# This program is free software; you can redistribute it and/or modify it #
+# under the terms of the GNU General Public License as published by the Free #
+# Software Foundation; either version 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+for ((; ;))
+{
+ for ((i = 0; i < 100; i++))
+ {
+ echo 1 > "$TRACING_PATH"/events/enable
+ echo 0 > "$TRACING_PATH"/events/enable
+ }
+
+ for dir in `ls $TRACING_PATH/events/`;
+ do
+ if [ ! -d $dir -o "$dir" == ftrace ]; then
+ continue;
+ fi
+
+ for ((i = 0; i < 20; i++))
+ {
+ echo 1 > "$TRACING_PATH"/events/$dir/enable
+ echo 0 > "$TRACING_PATH"/events/$dir/enable
+ }
+ done
+
+ for event in `cat $TRACING_PATH/available_events`;
+ do
+ echo $event >> "$TRACING_PATH"/set_event
+ done
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
new file mode 100755
index 0000000..541215c
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
@@ -0,0 +1,44 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=300
+
+if [ ! -e "$TRACING_PATH"/set_ftrace_pid ]; then
+ should_skip=1
+else
+ should_skip=0
+fi
+
+for ((; ; ))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ for ((j = 0; j < $LOOP; j++))
+ {
+ for ((k = 1; k <= NR_PIDS; k++))
+ {
+ str="\$pid$k"
+ eval echo $str >> "$TRACING_PATH"/set_ftrace_pid
+ }
+
+ echo > "$TRACING_PATH"/set_ftrace_pid
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
new file mode 100755
index 0000000..682d05e
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
@@ -0,0 +1,39 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_STACK_SIZE=8192
+
+if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
+ should_skip=1
+else
+ should_skip=0
+fi
+
+for ((; ;))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ for ((i = 0; i < $MAX_STACK_SIZE; i += 70))
+ {
+ echo $i > "$TRACING_PATH"/stack_max_size
+ cat "$TRACING_PATH"/stack_max_size > /dev/null
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
new file mode 100755
index 0000000..a406c51
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=400
+
+if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
+ should_skip=1
+else
+ should_skip=0
+fi
+
+for ((; ;))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ for ((i = 0; i < $LOOP; i++))
+ {
+ cat "$TRACING_PATH"/stack_trace > /dev/null
+ }
+
+ sleep 1
+
+ for ((i = 0; i < $LOOP; i++))
+ {
+ echo 0 > /proc/sys/kernel/stack_tracer_enabled
+ echo 1 > /proc/sys/kernel/stack_tracer_enabled
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
new file mode 100755
index 0000000..e36712b
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
@@ -0,0 +1,27 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=200
+
+for ((; ;))
+{
+ for ((i = 0; i < $LOOP; i++))
+ {
+ cat "$TRACING_PATH"/trace > /dev/null
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
new file mode 100755
index 0000000..51f2507
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=400
+
+# In kernel which is older than 2.6.32, we set global clock
+# via trace_options.
+./ftrace_kvercmp 2 6 32
+if [ $? -eq 0 ]; then
+ old_kernel=1
+else
+ old_kernel=0
+fi
+
+for ((; ;))
+{
+ if [ $old_kernel -eq 1 ];
+ then
+ for ((i = 0; i < $LOOP; i++))
+ {
+ echo 1 > "$TRACING_PATH"/options/global-clock
+ echo 0 > "$TRACING_PATH"/options/global-clock
+ }
+ else
+ for ((i = 0; i < $LOOP; i++))
+ {
+ echo local > "$TRACING_PATH"/trace_clock
+ echo global > "$TRACING_PATH"/trace_clock
+ }
+ fi
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
new file mode 100755
index 0000000..47d2a62
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
@@ -0,0 +1,42 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=200
+
+trace_options=(print-parent sym-offset sym-addr verbose raw hex bin block trace_printk ftrace_preempt branch annotate userstacktrace sym-userobj printk-msg-only context-info latency-format sleep-time graph-time)
+
+NR_TRACE_OPTIONS=19
+
+for ((; ; ))
+{
+ for ((j = 0; j < $LOOP; j++))
+ {
+ num=`date +%N`
+ num=`printf 1%s $num`
+
+ for ((i = 0; i < $NR_TRACE_OPTIONS; i++))
+ {
+ n=$(( ( $num >> $i ) % 2 ))
+ if [ $n -eq 0 ]; then
+ echo 0 > "$TRACING_PATH"/options/${trace_options[$i]}
+ else
+ echo 1 > "$TRACING_PATH"/options/${trace_options[$i]}
+ fi
+ }
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
new file mode 100755
index 0000000..cccb7ae
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
@@ -0,0 +1,43 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+kill_this_pid()
+{
+ /bin/kill -SIGKILL $this_pid
+ wait $this_pid
+ exit 0
+}
+
+trap kill_this_pid SIGUSR1
+
+LOOP=20
+
+for ((; ;))
+{
+ for ((i = 0; i < $LOOP; i++))
+ {
+ cat "$TRACING_PATH"/trace_pipe > /dev/null &
+
+ this_pid=$!
+ usleep 200000
+ /bin/kill -SIGINT $this_pid
+ wait $this_pid
+ this_pid=0
+ usleep 200000
+ }
+
+ sleep 2
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
new file mode 100755
index 0000000..ad6859f
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# This program is free software; you can redistribute it and/or modify it #
+# under the terms of the GNU General Public License as published by the Free #
+# Software Foundation; either version 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+LOOP=200
+
+should_skip=0
+
+if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
+ should_skip=1
+fi
+
+# For kernels older than 2.6.36, this testcase can result in
+# divide-by-zero kernel bug
+"$TPATH"/ftrace_kvercmp 2 6 36
+if [ $? -eq 0 ]; then
+ should_skip=1
+fi
+
+for ((; ;))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ for ((i = 0; i < $LOOP; i++))
+ {
+ cat "$TRACING_PATH"/trace_stat/function0 > /dev/null 2>&1
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
new file mode 100755
index 0000000..69f2ae6
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
@@ -0,0 +1,39 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_LOOP=1500
+count=0
+
+for ((; ;))
+{
+ count=$(( $count + 1 ))
+
+ for ((i = 0; i < $MAX_LOOP; i++))
+ {
+ echo 0 > "$TRACING_PATH"/tracing_enabled
+ echo 1 > "$TRACING_PATH"/tracing_enabled
+ }
+
+ enable=$(( $count % 3 ))
+
+ if [ $enable -eq 0 ]; then
+ echo 0 > "$TRACING_PATH"/tracing_enabled
+ else
+ echo 1 > "$TRACING_PATH"/tracing_enabled
+ fi
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
new file mode 100755
index 0000000..f19d734
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
@@ -0,0 +1,38 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# This program is free software; you can redistribute it and/or modify it #
+# under the terms of the GNU General Public License as published by the Free #
+# Software Foundation; either version 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_LATENCY=100000
+
+if [ ! -e "$TRACING_PATH"/tracing_max_latency ]; then
+ should_skip=1
+else
+ should_skip=0
+fi
+
+for ((; ;))
+{
+ if [ $should_skip -eq 1 ]; then
+ sleep 2
+ continue
+ fi
+
+ for ((i = 0; i < $MAX_LATENCY; i += 400))
+ {
+ echo $i > "$TRACING_PATH"/tracing_max_latency
+ }
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
new file mode 100755
index 0000000..672c223
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
@@ -0,0 +1,39 @@
+#! /bin/sh
+
+###############################################################################
+# #
+# Copyright (c) 2010 FUJITSU LIMITED #
+# #
+# 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 2 of the License, or (at your option) #
+# any later version. #
+# #
+# Author: Li Zefan <lizf@cn.fujitsu.com> #
+# #
+###############################################################################
+
+MAX_LOOP=1500
+count=0
+
+for ((; ;))
+{
+ count=$(( $count + 1 ))
+
+ for ((i = 0; i < $MAX_LOOP; i++))
+ {
+ echo 0 > "$TRACING_PATH"/tracing_on
+ echo 1 > "$TRACING_PATH"/tracing_on
+ }
+
+ enable=$(( $count % 3 ))
+
+ if [ $enable -eq 0 ]; then
+ echo 0 > "$TRACING_PATH"/tracing_on
+ else
+ echo 1 > "$TRACING_PATH"/tracing_on
+ fi
+
+ sleep 1
+}
+
diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
new file mode 100755
index 0000000..3e6c4b7
--- /dev/null
+++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
@@ -0,0 +1,237 @@
+#! /bin/sh
+
+################################################################################
+## ##
+## Copyright (c) 2010 FUJITSU LIMITED ##
+## ##
+## 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 2 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, write to the Free Software ##
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
+## ##
+## Author: Li Zefan <lizf@cn.fujitsu.com> ##
+## ##
+################################################################################
+
+cd $LTPROOT/testcases/bin
+
+export TCID="ftrace-stress-test"
+export TST_TOTAL=1
+export TST_COUNT=1
+
+export TPATH="$PWD"
+export DEBUGFS_PATH="$PWD/debugfs"
+export TRACING_PATH="$PWD/debugfs/tracing"
+export SPATH="$TPATH/ftrace_stress"
+
+test_interval=$1
+
+save_old_setting()
+{
+ cd $TRACING_PATH
+
+ old_trace_options=( `cat trace_options` )
+ old_tracing_on=`cat tracing_on`
+ old_tracing_enabled=`cat tracing_enabled`
+ old_buffer_size=`cat buffer_size_kb`
+
+ if [ -e stack_max_size ]; then
+ old_stack_tracer_enabled=`cat /proc/sys/kernel/stack_tracer_enabled`
+ fi
+
+ if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
+ old_ftrace_enabled=`cat /proc/sys/kernel/ftrace_enabled`
+ fi
+
+ if [ -e "function_profile_enabled" ]; then
+ old_profile_enabled=`cat function_profile_enabled`
+ fi
+
+ cd - > /dev/null
+}
+
+restore_old_setting()
+{
+ cd $TRACING_PATH
+
+ echo nop > current_tracer
+ echo 0 > events/enable
+ echo 0 > tracing_max_latency 2> /dev/null
+
+ if [ -e trace_clock ]; then
+ echo local > trace_clock
+ fi
+
+ if [ -e "function_pofile_enabled" ]; then
+ echo $old_profile_enabled > function_profile_enabled
+ fi
+
+ if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
+ echo $old_ftrace_enabled > /proc/sys/kernel/ftrace_enabled
+ fi
+
+ if [ -e stack_max_size ]; then
+ echo $old_stack_tracer_enabled > /proc/sys/kernel/stack_tracer_enabled
+ echo 0 > stack_max_size
+ fi
+
+ echo $old_buffer_size > buffer_size_kb
+ echo $old_tracing_on > tracing_on
+ echo $old_tracing_enabled > tracing_enabled
+
+ for option in ${old_trace_options[*]};
+ do
+ echo $option > trace_options 2> /dev/null
+ done
+
+ echo > trace
+
+ cd - > /dev/null
+}
+
+clean_up()
+{
+ /bin/kill -SIGKILL $pid1
+ /bin/kill -SIGKILL $pid2
+ /bin/kill -SIGKILL $pid3
+ /bin/kill -SIGKILL $pid4
+ /bin/kill -SIGKILL $pid5
+ /bin/kill -SIGKILL $pid6
+ /bin/kill -SIGKILL $pid7
+ /bin/kill -SIGKILL $pid8
+ /bin/kill -SIGKILL $pid9
+ /bin/kill -SIGKILL $pid10
+ /bin/kill -SIGKILL $pid11
+ /bin/kill -SIGUSR1 $pid12
+ /bin/kill -SIGKILL $pid13
+ /bin/kill -SIGKILL $pid14
+ /bin/kill -SIGKILL $pid15
+ /bin/kill -SIGKILL $pid16
+
+ sleep 2
+ restore_old_setting
+
+ umount $DEBUGFS_PATH
+ rmdir $DEBUGFS_PATH
+}
+
+clean_up_exit()
+{
+ clean_up
+ exit 1
+}
+
+export_pids()
+{
+ export pid1 pid2 pid3 pid4 pid5 pid6 pid7 pid8 pid9 pid10 pid11 pid12 \
+ pid13 pid14 pid15 pid16
+
+ export NR_PIDS=16
+}
+
+test_begin()
+{
+ start_time=`date +%s`
+}
+
+test_wait()
+{
+ for ((; ;))
+ {
+ sleep 2
+
+ cur_time=`date +%s`
+ elapsed=$(( $cur_time - $start_time ))
+
+ # run the stress test for $test_interval secs
+ if [ $elapsed -ge $test_interval ]; then
+ break
+ fi
+ }
+}
+
+trap clean_up_exit SIGINT
+
+# Should be run by root user
+if [ "`whoami`" != "root" ]; then
+ tst_brkm TCONF ignored "The test should be run by root user. Skip the test..."
+ exit 0
+fi
+
+# Don't run the test on kernels older than 2.6.34, otherwise
+# it can crash the system if the kernel is not latest-stable
+./ftrace_kvercmp 2 6 34
+if [ $? -eq 0 ]; then
+ tst_brkm TCONF ignored "The test should be run in kernels >= 2.6.34. Skip the test..."
+ exit 0
+fi
+
+mkdir $DEBUGFS_PATH
+mount -t debugfs xxx $DEBUGFS_PATH
+
+# Check to see tracing feature is supported or not
+if [ ! -d $TRACING_PATH ]; then
+ tst_brkm TCONF ignored "Tracing is not supported. Skip the test..."
+ umount $DEBUGFS_PATH
+ rmdir $DEBUGFS_PATH
+ exit 0
+fi
+
+echo "Ftrace Stress Test Begin"
+
+save_old_setting
+
+test_begin
+
+$SPATH/ftrace_trace_clock.sh &
+pid1=$!
+$SPATH/ftrace_current_tracer.sh &
+pid2=$!
+$SPATH/ftrace_trace_options.sh &
+pid3=$!
+$SPATH/ftrace_tracing_max_latency.sh &
+pid4=$!
+$SPATH/ftrace_stack_trace.sh &
+pid5=$!
+$SPATH/ftrace_stack_max_size.sh &
+pid6=$!
+$SPATH/ftrace_tracing_on.sh &
+pid7=$!
+$SPATH/ftrace_tracing_enabled.sh &
+pid8=$!
+$SPATH/ftrace_set_event.sh &
+pid9=$!
+$SPATH/ftrace_buffer_size.sh &
+pid10=$!
+$SPATH/ftrace_trace.sh &
+pid11=$!
+$SPATH/ftrace_trace_pipe.sh &
+pid12=$!
+$SPATH/ftrace_ftrace_enabled.sh &
+pid13=$!
+$SPATH/ftrace_set_ftrace_pid.sh &
+pid14=$!
+$SPATH/ftrace_profile_enabled.sh &
+pid15=$!
+$SPATH/ftrace_trace_stat.sh &
+pid16=$!
+
+export_pids
+
+test_wait
+
+clean_up
+
+echo "Ftrace Stress Test End"
+
+tst_resm TPASS "finished running the test. Run dmesg to double-check for bugs"
+
--
1.6.3
------------------------------------------------------------------------------
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^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-24 4:06 [LTP] [PATCH] Add ftrace-stress-test to LTP Li Zefan
@ 2010-08-24 11:02 ` Subrata Modak
2010-08-25 1:25 ` Li Zefan
2010-08-25 5:31 ` Garrett Cooper
1 sibling, 1 reply; 9+ messages in thread
From: Subrata Modak @ 2010-08-24 11:02 UTC (permalink / raw)
To: Li Zefan
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
Thanks. I need to test this on a suitable kernel. But doubtful if i can
add in the default run.
Regards--
Subrata
On Tue, 2010-08-24 at 12:06 +0800, Li Zefan wrote:
> We test ftrace by forking processes to simultaneously and
> constantly read/write different tracing files in debugfs
> and procfs.
>
> The test will be skipped if the kernel is older than 2.6.34,
> mainly because it can crash old kernels.
>
> The test will run by default and will run for 90 seconds.
>
> To run this test only:
>
> # ./runltp -f tracing
>
> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
> ---
> runltp | 3 +-
> runtest/tracing | 2 +
> testcases/kernel/Makefile | 2 +-
> testcases/kernel/tracing/Makefile | 5 +
> .../kernel/tracing/ftrace_stress_test/Makefile | 7 +
> .../ftrace_stress_test/ftrace_get_page_size.c | 10 +
> .../tracing/ftrace_stress_test/ftrace_kvercmp.c | 37 +++
> .../ftrace_stress/ftrace_buffer_size.sh | 43 ++++
> .../ftrace_stress/ftrace_current_tracer.sh | 34 +++
> .../ftrace_stress/ftrace_ftrace_enabled.sh | 39 ++++
> .../ftrace_stress/ftrace_profile_enabled.sh | 50 ++++
> .../ftrace_stress/ftrace_set_event.sh | 44 ++++
> .../ftrace_stress/ftrace_set_ftrace_pid.sh | 44 ++++
> .../ftrace_stress/ftrace_stack_max_size.sh | 39 ++++
> .../ftrace_stress/ftrace_stack_trace.sh | 46 ++++
> .../ftrace_stress/ftrace_trace.sh | 27 +++
> .../ftrace_stress/ftrace_trace_clock.sh | 46 ++++
> .../ftrace_stress/ftrace_trace_options.sh | 42 ++++
> .../ftrace_stress/ftrace_trace_pipe.sh | 43 ++++
> .../ftrace_stress/ftrace_trace_stat.sh | 45 ++++
> .../ftrace_stress/ftrace_tracing_enabled.sh | 39 ++++
> .../ftrace_stress/ftrace_tracing_max_latency.sh | 38 +++
> .../ftrace_stress/ftrace_tracing_on.sh | 39 ++++
> .../ftrace_stress_test/ftrace_stress_test.sh | 237 ++++++++++++++++++++
> 24 files changed, 959 insertions(+), 2 deletions(-)
> create mode 100644 runtest/tracing
> create mode 100644 testcases/kernel/tracing/Makefile
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/Makefile
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
>
> diff --git a/runltp b/runltp
> index b385984..89b1717 100755
> --- a/runltp
> +++ b/runltp
> @@ -593,7 +593,8 @@ main()
> ${LTPROOT}/runtest/numa \
> ${LTPROOT}/runtest/hugetlb \
> ${LTPROOT}/runtest/commands \
> - ${LTPROOT}/runtest/hyperthreading
> + ${LTPROOT}/runtest/hyperthreading \
> + ${LTPROOT}/runtest/tracing
> do
> [ -e "$SCENFILES" ] || \
> {
> diff --git a/runtest/tracing b/runtest/tracing
> new file mode 100644
> index 0000000..ef3a048
> --- /dev/null
> +++ b/runtest/tracing
> @@ -0,0 +1,2 @@
> +#DESCRIPTION:Tracing testing
> +ftrace-stress-test ftrace_stress_test.sh 90
> diff --git a/testcases/kernel/Makefile b/testcases/kernel/Makefile
> index e2a9d8e..8c50025 100644
> --- a/testcases/kernel/Makefile
> +++ b/testcases/kernel/Makefile
> @@ -30,7 +30,7 @@ include $(top_srcdir)/include/mk/env_pre.mk
> ifneq ($(UCLINUX),1)
> SUBDIRS := containers connectors controllers fs hotplug io ipc mem \
> numa performance_counters power_management pty sched \
> - security syscalls timers
> + security syscalls timers tracing
> else
> SUBDIRS := syscalls
> endif
> diff --git a/testcases/kernel/tracing/Makefile b/testcases/kernel/tracing/Makefile
> new file mode 100644
> index 0000000..e9f96c3
> --- /dev/null
> +++ b/testcases/kernel/tracing/Makefile
> @@ -0,0 +1,5 @@
> +top_srcdir ?= ../../..
> +
> +include $(top_srcdir)/include/mk/env_pre.mk
> +
> +include $(top_srcdir)/include/mk/generic_trunk_target.mk
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/Makefile b/testcases/kernel/tracing/ftrace_stress_test/Makefile
> new file mode 100644
> index 0000000..e4a913a
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/Makefile
> @@ -0,0 +1,7 @@
> +top_srcdir ?= ../../../..
> +
> +include $(top_srcdir)/include/mk/testcases.mk
> +
> +INSTALL_TARGETS := *.sh ftrace_stress/*
> +
> +include $(top_srcdir)/include/mk/generic_leaf_target.mk
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> new file mode 100644
> index 0000000..b52a109
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> @@ -0,0 +1,10 @@
> +#include <unistd.h>
> +#include <stdio.h>
> +
> +int main(void)
> +{
> + printf("%d\n", getpagesize());
> +
> + return 0;
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> new file mode 100644
> index 0000000..bd67b37
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> @@ -0,0 +1,37 @@
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <sys/utsname.h>
> +
> +int main(int argc, char **argv)
> +{
> + struct utsname uval;
> + int k1, k2, k3;
> + int a1, a2, a3;
> + unsigned long r1, r2;
> +
> + if (argc != 4) {
> + fprintf(stderr, "Wrong arguments!\n");
> + return -1;
> + }
> +
> + a1 = strtol(argv[1], NULL, 10);
> + a2 = strtol(argv[2], NULL, 10);
> + a3 = strtol(argv[3], NULL, 10);
> +
> + uname(&uval);
> +
> + sscanf(uval.release, "%d.%d.%d", &k1, &k2, &k3);
> +
> + r1 = (a1 << 16) + (a2 << 8) + a3;
> + r2 = (k1 << 16) + (k2 << 8) + k3;
> +
> + if (r1 > r2)
> + return 0;
> + else if (r1 == r2)
> + return 1;
> + else
> + return 2;
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> new file mode 100755
> index 0000000..af5a98e
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> @@ -0,0 +1,43 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +# Use up to 10% of free memory
> +free_mem=`cat /proc/meminfo | grep '^MemFree' | awk '{ print $2 }'`
> +step=$(( $free_mem / 10 / $LOOP ))
> +if [ $step -eq 0 ]; then
> + $step=1
> + LOOP=50
> +fi
> +
> +for ((; ;))
> +{
> + new_size=1
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo $new_size > "$TRACING_PATH"/buffer_size_kb
> + new_size=$(( $new_size + $step ))
> + }
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + new_size=$(( $new_size - $step ))
> + echo $new_size > "$TRACING_PATH"/buffer_size_kb
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> new file mode 100755
> index 0000000..1baed96
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> @@ -0,0 +1,34 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + for tracer in `cat "$TRACING_PATH"/available_tracers`;
> + do
> + if [ "$tracer" == mmiotrace ]; then
> + continue
> + fi
> +
> + echo $tracer > "$TRACING_PATH"/current_tracer 2> /dev/null
> + done
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> new file mode 100755
> index 0000000..20bb234
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > /proc/sys/kernel/ftrace_enabled
> + echo 1 > /proc/sys/kernel/ftrace_enabled
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 1 > /proc/sys/kernel/ftrace_enabled
> + else
> + echo 0 > /proc/sys/kernel/ftrace_enabled
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> new file mode 100755
> index 0000000..9c6162a
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> @@ -0,0 +1,50 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + else
> + echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> new file mode 100755
> index 0000000..f876414
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> @@ -0,0 +1,44 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < 100; i++))
> + {
> + echo 1 > "$TRACING_PATH"/events/enable
> + echo 0 > "$TRACING_PATH"/events/enable
> + }
> +
> + for dir in `ls $TRACING_PATH/events/`;
> + do
> + if [ ! -d $dir -o "$dir" == ftrace ]; then
> + continue;
> + fi
> +
> + for ((i = 0; i < 20; i++))
> + {
> + echo 1 > "$TRACING_PATH"/events/$dir/enable
> + echo 0 > "$TRACING_PATH"/events/$dir/enable
> + }
> + done
> +
> + for event in `cat $TRACING_PATH/available_events`;
> + do
> + echo $event >> "$TRACING_PATH"/set_event
> + done
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> new file mode 100755
> index 0000000..541215c
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> @@ -0,0 +1,44 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=300
> +
> +if [ ! -e "$TRACING_PATH"/set_ftrace_pid ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ; ))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((j = 0; j < $LOOP; j++))
> + {
> + for ((k = 1; k <= NR_PIDS; k++))
> + {
> + str="\$pid$k"
> + eval echo $str >> "$TRACING_PATH"/set_ftrace_pid
> + }
> +
> + echo > "$TRACING_PATH"/set_ftrace_pid
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> new file mode 100755
> index 0000000..682d05e
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_STACK_SIZE=8192
> +
> +if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $MAX_STACK_SIZE; i += 70))
> + {
> + echo $i > "$TRACING_PATH"/stack_max_size
> + cat "$TRACING_PATH"/stack_max_size > /dev/null
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> new file mode 100755
> index 0000000..a406c51
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> @@ -0,0 +1,46 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=400
> +
> +if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/stack_trace > /dev/null
> + }
> +
> + sleep 1
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo 0 > /proc/sys/kernel/stack_tracer_enabled
> + echo 1 > /proc/sys/kernel/stack_tracer_enabled
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> new file mode 100755
> index 0000000..e36712b
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> @@ -0,0 +1,27 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace > /dev/null
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> new file mode 100755
> index 0000000..51f2507
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> @@ -0,0 +1,46 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=400
> +
> +# In kernel which is older than 2.6.32, we set global clock
> +# via trace_options.
> +./ftrace_kvercmp 2 6 32
> +if [ $? -eq 0 ]; then
> + old_kernel=1
> +else
> + old_kernel=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $old_kernel -eq 1 ];
> + then
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo 1 > "$TRACING_PATH"/options/global-clock
> + echo 0 > "$TRACING_PATH"/options/global-clock
> + }
> + else
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo local > "$TRACING_PATH"/trace_clock
> + echo global > "$TRACING_PATH"/trace_clock
> + }
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> new file mode 100755
> index 0000000..47d2a62
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> @@ -0,0 +1,42 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +trace_options=(print-parent sym-offset sym-addr verbose raw hex bin block trace_printk ftrace_preempt branch annotate userstacktrace sym-userobj printk-msg-only context-info latency-format sleep-time graph-time)
> +
> +NR_TRACE_OPTIONS=19
> +
> +for ((; ; ))
> +{
> + for ((j = 0; j < $LOOP; j++))
> + {
> + num=`date +%N`
> + num=`printf 1%s $num`
> +
> + for ((i = 0; i < $NR_TRACE_OPTIONS; i++))
> + {
> + n=$(( ( $num >> $i ) % 2 ))
> + if [ $n -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/options/${trace_options[$i]}
> + else
> + echo 1 > "$TRACING_PATH"/options/${trace_options[$i]}
> + fi
> + }
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> new file mode 100755
> index 0000000..cccb7ae
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> @@ -0,0 +1,43 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +kill_this_pid()
> +{
> + /bin/kill -SIGKILL $this_pid
> + wait $this_pid
> + exit 0
> +}
> +
> +trap kill_this_pid SIGUSR1
> +
> +LOOP=20
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace_pipe > /dev/null &
> +
> + this_pid=$!
> + usleep 200000
> + /bin/kill -SIGINT $this_pid
> + wait $this_pid
> + this_pid=0
> + usleep 200000
> + }
> +
> + sleep 2
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> new file mode 100755
> index 0000000..ad6859f
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> @@ -0,0 +1,45 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +should_skip=0
> +
> +if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
> + should_skip=1
> +fi
> +
> +# For kernels older than 2.6.36, this testcase can result in
> +# divide-by-zero kernel bug
> +"$TPATH"/ftrace_kvercmp 2 6 36
> +if [ $? -eq 0 ]; then
> + should_skip=1
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace_stat/function0 > /dev/null 2>&1
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> new file mode 100755
> index 0000000..69f2ae6
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/tracing_enabled
> + echo 1 > "$TRACING_PATH"/tracing_enabled
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/tracing_enabled
> + else
> + echo 1 > "$TRACING_PATH"/tracing_enabled
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> new file mode 100755
> index 0000000..f19d734
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> @@ -0,0 +1,38 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LATENCY=100000
> +
> +if [ ! -e "$TRACING_PATH"/tracing_max_latency ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $MAX_LATENCY; i += 400))
> + {
> + echo $i > "$TRACING_PATH"/tracing_max_latency
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> new file mode 100755
> index 0000000..672c223
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/tracing_on
> + echo 1 > "$TRACING_PATH"/tracing_on
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/tracing_on
> + else
> + echo 1 > "$TRACING_PATH"/tracing_on
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
> new file mode 100755
> index 0000000..3e6c4b7
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
> @@ -0,0 +1,237 @@
> +#! /bin/sh
> +
> +################################################################################
> +## ##
> +## Copyright (c) 2010 FUJITSU LIMITED ##
> +## ##
> +## 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 2 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, write to the Free Software ##
> +## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
> +## ##
> +## Author: Li Zefan <lizf@cn.fujitsu.com> ##
> +## ##
> +################################################################################
> +
> +cd $LTPROOT/testcases/bin
> +
> +export TCID="ftrace-stress-test"
> +export TST_TOTAL=1
> +export TST_COUNT=1
> +
> +export TPATH="$PWD"
> +export DEBUGFS_PATH="$PWD/debugfs"
> +export TRACING_PATH="$PWD/debugfs/tracing"
> +export SPATH="$TPATH/ftrace_stress"
> +
> +test_interval=$1
> +
> +save_old_setting()
> +{
> + cd $TRACING_PATH
> +
> + old_trace_options=( `cat trace_options` )
> + old_tracing_on=`cat tracing_on`
> + old_tracing_enabled=`cat tracing_enabled`
> + old_buffer_size=`cat buffer_size_kb`
> +
> + if [ -e stack_max_size ]; then
> + old_stack_tracer_enabled=`cat /proc/sys/kernel/stack_tracer_enabled`
> + fi
> +
> + if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
> + old_ftrace_enabled=`cat /proc/sys/kernel/ftrace_enabled`
> + fi
> +
> + if [ -e "function_profile_enabled" ]; then
> + old_profile_enabled=`cat function_profile_enabled`
> + fi
> +
> + cd - > /dev/null
> +}
> +
> +restore_old_setting()
> +{
> + cd $TRACING_PATH
> +
> + echo nop > current_tracer
> + echo 0 > events/enable
> + echo 0 > tracing_max_latency 2> /dev/null
> +
> + if [ -e trace_clock ]; then
> + echo local > trace_clock
> + fi
> +
> + if [ -e "function_pofile_enabled" ]; then
> + echo $old_profile_enabled > function_profile_enabled
> + fi
> +
> + if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
> + echo $old_ftrace_enabled > /proc/sys/kernel/ftrace_enabled
> + fi
> +
> + if [ -e stack_max_size ]; then
> + echo $old_stack_tracer_enabled > /proc/sys/kernel/stack_tracer_enabled
> + echo 0 > stack_max_size
> + fi
> +
> + echo $old_buffer_size > buffer_size_kb
> + echo $old_tracing_on > tracing_on
> + echo $old_tracing_enabled > tracing_enabled
> +
> + for option in ${old_trace_options[*]};
> + do
> + echo $option > trace_options 2> /dev/null
> + done
> +
> + echo > trace
> +
> + cd - > /dev/null
> +}
> +
> +clean_up()
> +{
> + /bin/kill -SIGKILL $pid1
> + /bin/kill -SIGKILL $pid2
> + /bin/kill -SIGKILL $pid3
> + /bin/kill -SIGKILL $pid4
> + /bin/kill -SIGKILL $pid5
> + /bin/kill -SIGKILL $pid6
> + /bin/kill -SIGKILL $pid7
> + /bin/kill -SIGKILL $pid8
> + /bin/kill -SIGKILL $pid9
> + /bin/kill -SIGKILL $pid10
> + /bin/kill -SIGKILL $pid11
> + /bin/kill -SIGUSR1 $pid12
> + /bin/kill -SIGKILL $pid13
> + /bin/kill -SIGKILL $pid14
> + /bin/kill -SIGKILL $pid15
> + /bin/kill -SIGKILL $pid16
> +
> + sleep 2
> + restore_old_setting
> +
> + umount $DEBUGFS_PATH
> + rmdir $DEBUGFS_PATH
> +}
> +
> +clean_up_exit()
> +{
> + clean_up
> + exit 1
> +}
> +
> +export_pids()
> +{
> + export pid1 pid2 pid3 pid4 pid5 pid6 pid7 pid8 pid9 pid10 pid11 pid12 \
> + pid13 pid14 pid15 pid16
> +
> + export NR_PIDS=16
> +}
> +
> +test_begin()
> +{
> + start_time=`date +%s`
> +}
> +
> +test_wait()
> +{
> + for ((; ;))
> + {
> + sleep 2
> +
> + cur_time=`date +%s`
> + elapsed=$(( $cur_time - $start_time ))
> +
> + # run the stress test for $test_interval secs
> + if [ $elapsed -ge $test_interval ]; then
> + break
> + fi
> + }
> +}
> +
> +trap clean_up_exit SIGINT
> +
> +# Should be run by root user
> +if [ "`whoami`" != "root" ]; then
> + tst_brkm TCONF ignored "The test should be run by root user. Skip the test..."
> + exit 0
> +fi
> +
> +# Don't run the test on kernels older than 2.6.34, otherwise
> +# it can crash the system if the kernel is not latest-stable
> +./ftrace_kvercmp 2 6 34
> +if [ $? -eq 0 ]; then
> + tst_brkm TCONF ignored "The test should be run in kernels >= 2.6.34. Skip the test..."
> + exit 0
> +fi
> +
> +mkdir $DEBUGFS_PATH
> +mount -t debugfs xxx $DEBUGFS_PATH
> +
> +# Check to see tracing feature is supported or not
> +if [ ! -d $TRACING_PATH ]; then
> + tst_brkm TCONF ignored "Tracing is not supported. Skip the test..."
> + umount $DEBUGFS_PATH
> + rmdir $DEBUGFS_PATH
> + exit 0
> +fi
> +
> +echo "Ftrace Stress Test Begin"
> +
> +save_old_setting
> +
> +test_begin
> +
> +$SPATH/ftrace_trace_clock.sh &
> +pid1=$!
> +$SPATH/ftrace_current_tracer.sh &
> +pid2=$!
> +$SPATH/ftrace_trace_options.sh &
> +pid3=$!
> +$SPATH/ftrace_tracing_max_latency.sh &
> +pid4=$!
> +$SPATH/ftrace_stack_trace.sh &
> +pid5=$!
> +$SPATH/ftrace_stack_max_size.sh &
> +pid6=$!
> +$SPATH/ftrace_tracing_on.sh &
> +pid7=$!
> +$SPATH/ftrace_tracing_enabled.sh &
> +pid8=$!
> +$SPATH/ftrace_set_event.sh &
> +pid9=$!
> +$SPATH/ftrace_buffer_size.sh &
> +pid10=$!
> +$SPATH/ftrace_trace.sh &
> +pid11=$!
> +$SPATH/ftrace_trace_pipe.sh &
> +pid12=$!
> +$SPATH/ftrace_ftrace_enabled.sh &
> +pid13=$!
> +$SPATH/ftrace_set_ftrace_pid.sh &
> +pid14=$!
> +$SPATH/ftrace_profile_enabled.sh &
> +pid15=$!
> +$SPATH/ftrace_trace_stat.sh &
> +pid16=$!
> +
> +export_pids
> +
> +test_wait
> +
> +clean_up
> +
> +echo "Ftrace Stress Test End"
> +
> +tst_resm TPASS "finished running the test. Run dmesg to double-check for bugs"
> +
------------------------------------------------------------------------------
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^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-24 11:02 ` Subrata Modak
@ 2010-08-25 1:25 ` Li Zefan
2010-08-25 2:41 ` Garrett Cooper
0 siblings, 1 reply; 9+ messages in thread
From: Li Zefan @ 2010-08-25 1:25 UTC (permalink / raw)
To: subrata
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
Subrata Modak wrote:
> Thanks. I need to test this on a suitable kernel. But doubtful if i can
> add in the default run.
>
Why? Because it costs 90 secs? This is configurable, and some other
test suites like cpuctl cost more time.
If a test suite is not run by default, I guess people won't know its
existence, probably.
> Regards--
> Subrata
>
> On Tue, 2010-08-24 at 12:06 +0800, Li Zefan wrote:
>> We test ftrace by forking processes to simultaneously and
>> constantly read/write different tracing files in debugfs
>> and procfs.
>>
>> The test will be skipped if the kernel is older than 2.6.34,
>> mainly because it can crash old kernels.
>>
>> The test will run by default and will run for 90 seconds.
>>
>> To run this test only:
>>
>> # ./runltp -f tracing
>>
>> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
------------------------------------------------------------------------------
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-25 1:25 ` Li Zefan
@ 2010-08-25 2:41 ` Garrett Cooper
2010-08-25 2:59 ` Li Zefan
2010-09-06 16:16 ` Subrata Modak
0 siblings, 2 replies; 9+ messages in thread
From: Garrett Cooper @ 2010-08-25 2:41 UTC (permalink / raw)
To: Li Zefan
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
On Tue, Aug 24, 2010 at 6:25 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
> Subrata Modak wrote:
>> Thanks. I need to test this on a suitable kernel. But doubtful if i can
>> add in the default run.
>>
>
> Why? Because it costs 90 secs? This is configurable, and some other
> test suites like cpuctl cost more time.
>
> If a test suite is not run by default, I guess people won't know its
> existence, probably.
I think that more of the concern stems from the fact that it's a
performance test, and a lot of people complain if and when their test
machines slow down to a halt (take hackbench, proc01, for example).
There are issues with the code, but it's dealing with the fact that
it's not really written in a portable way. Give me a bit of time and
I'll comment on what needs to be changed.
Thanks,
-Garrett
------------------------------------------------------------------------------
Sell apps to millions through the Intel(R) Atom(Tm) Developer Program
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worldwide. Take advantage of special opportunities to increase revenue and
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-25 2:41 ` Garrett Cooper
@ 2010-08-25 2:59 ` Li Zefan
2010-09-06 16:16 ` Subrata Modak
1 sibling, 0 replies; 9+ messages in thread
From: Li Zefan @ 2010-08-25 2:59 UTC (permalink / raw)
To: Garrett Cooper
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
Garrett Cooper wrote:
> On Tue, Aug 24, 2010 at 6:25 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
>> Subrata Modak wrote:
>>> Thanks. I need to test this on a suitable kernel. But doubtful if i can
>>> add in the default run.
>>>
>> Why? Because it costs 90 secs? This is configurable, and some other
>> test suites like cpuctl cost more time.
>>
>> If a test suite is not run by default, I guess people won't know its
>> existence, probably.
>
> I think that more of the concern stems from the fact that it's a
> performance test, and a lot of people complain if and when their test
> machines slow down to a halt (take hackbench, proc01, for example).
>
It's not a performance test, but a stress test, which aims at revealing
racy corners in ftrace. Though it will slow down the machine, it won't
halt the machine, unless we hit a serious kernel bug.
> There are issues with the code, but it's dealing with the fact that
> it's not really written in a portable way. Give me a bit of time and
> I'll comment on what needs to be changed.
>
Thanks for reviewing the code. I'm not good at writing protable bash
scripts..
------------------------------------------------------------------------------
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-25 2:41 ` Garrett Cooper
2010-08-25 2:59 ` Li Zefan
@ 2010-09-06 16:16 ` Subrata Modak
2010-09-06 18:52 ` Garrett Cooper
1 sibling, 1 reply; 9+ messages in thread
From: Subrata Modak @ 2010-09-06 16:16 UTC (permalink / raw)
To: Garrett Cooper
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
Garret,
Did you get a chance to review these tests further ?
Regards--
Subrata
On Tue, 2010-08-24 at 19:41 -0700, Garrett Cooper wrote:
> On Tue, Aug 24, 2010 at 6:25 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
> > Subrata Modak wrote:
> >> Thanks. I need to test this on a suitable kernel. But doubtful if i can
> >> add in the default run.
> >>
> >
> > Why? Because it costs 90 secs? This is configurable, and some other
> > test suites like cpuctl cost more time.
> >
> > If a test suite is not run by default, I guess people won't know its
> > existence, probably.
>
> I think that more of the concern stems from the fact that it's a
> performance test, and a lot of people complain if and when their test
> machines slow down to a halt (take hackbench, proc01, for example).
>
> There are issues with the code, but it's dealing with the fact that
> it's not really written in a portable way. Give me a bit of time and
> I'll comment on what needs to be changed.
>
> Thanks,
> -Garrett
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-09-06 16:16 ` Subrata Modak
@ 2010-09-06 18:52 ` Garrett Cooper
0 siblings, 0 replies; 9+ messages in thread
From: Garrett Cooper @ 2010-09-06 18:52 UTC (permalink / raw)
To: subrata
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
On Mon, Sep 6, 2010 at 9:16 AM, Subrata Modak
<subrata@linux.vnet.ibm.com> wrote:
> Garret,
>
> Did you get a chance to review these tests further?
(see below for bottom post)
> On Tue, 2010-08-24 at 19:41 -0700, Garrett Cooper wrote:
>> On Tue, Aug 24, 2010 at 6:25 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
>> > Subrata Modak wrote:
>> >> Thanks. I need to test this on a suitable kernel. But doubtful if i can
>> >> add in the default run.
>> >>
>> >
>> > Why? Because it costs 90 secs? This is configurable, and some other
>> > test suites like cpuctl cost more time.
>> >
>> > If a test suite is not run by default, I guess people won't know its
>> > existence, probably.
>>
>> I think that more of the concern stems from the fact that it's a
>> performance test, and a lot of people complain if and when their test
>> machines slow down to a halt (take hackbench, proc01, for example).
>>
>> There are issues with the code, but it's dealing with the fact that
>> it's not really written in a portable way. Give me a bit of time and
>> I'll comment on what needs to be changed.
Li needs to fix some of my concerns which are valid (shell portability
by removing bashisms). Once that's done, then we can move on to the
next stage of review and potentially commit.
Thanks,
-Garrett
PS I still think that tst_kvercmp should be used because it's a lot
more versatile than what's added here, and will result in less
bitrotted code in the future.
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-24 4:06 [LTP] [PATCH] Add ftrace-stress-test to LTP Li Zefan
2010-08-24 11:02 ` Subrata Modak
@ 2010-08-25 5:31 ` Garrett Cooper
2010-09-02 1:08 ` Li Zefan
1 sibling, 1 reply; 9+ messages in thread
From: Garrett Cooper @ 2010-08-25 5:31 UTC (permalink / raw)
To: Li Zefan
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
On Mon, Aug 23, 2010 at 9:06 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
> We test ftrace by forking processes to simultaneously and
> constantly read/write different tracing files in debugfs
> and procfs.
>
> The test will be skipped if the kernel is older than 2.6.34,
> mainly because it can crash old kernels.
>
> The test will run by default and will run for 90 seconds.
>
> To run this test only:
>
> # ./runltp -f tracing
>
> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
> ---
> runltp | 3 +-
> runtest/tracing | 2 +
> testcases/kernel/Makefile | 2 +-
> testcases/kernel/tracing/Makefile | 5 +
> .../kernel/tracing/ftrace_stress_test/Makefile | 7 +
> .../ftrace_stress_test/ftrace_get_page_size.c | 10 +
> .../tracing/ftrace_stress_test/ftrace_kvercmp.c | 37 +++
> .../ftrace_stress/ftrace_buffer_size.sh | 43 ++++
> .../ftrace_stress/ftrace_current_tracer.sh | 34 +++
> .../ftrace_stress/ftrace_ftrace_enabled.sh | 39 ++++
> .../ftrace_stress/ftrace_profile_enabled.sh | 50 ++++
> .../ftrace_stress/ftrace_set_event.sh | 44 ++++
> .../ftrace_stress/ftrace_set_ftrace_pid.sh | 44 ++++
> .../ftrace_stress/ftrace_stack_max_size.sh | 39 ++++
> .../ftrace_stress/ftrace_stack_trace.sh | 46 ++++
> .../ftrace_stress/ftrace_trace.sh | 27 +++
> .../ftrace_stress/ftrace_trace_clock.sh | 46 ++++
> .../ftrace_stress/ftrace_trace_options.sh | 42 ++++
> .../ftrace_stress/ftrace_trace_pipe.sh | 43 ++++
> .../ftrace_stress/ftrace_trace_stat.sh | 45 ++++
> .../ftrace_stress/ftrace_tracing_enabled.sh | 39 ++++
> .../ftrace_stress/ftrace_tracing_max_latency.sh | 38 +++
> .../ftrace_stress/ftrace_tracing_on.sh | 39 ++++
> .../ftrace_stress_test/ftrace_stress_test.sh | 237 ++++++++++++++++++++
> 24 files changed, 959 insertions(+), 2 deletions(-)
> create mode 100644 runtest/tracing
> create mode 100644 testcases/kernel/tracing/Makefile
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/Makefile
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> create mode 100644 testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> create mode 100755 testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
>
> diff --git a/runltp b/runltp
> index b385984..89b1717 100755
> --- a/runltp
> +++ b/runltp
> @@ -593,7 +593,8 @@ main()
> ${LTPROOT}/runtest/numa \
> ${LTPROOT}/runtest/hugetlb \
> ${LTPROOT}/runtest/commands \
> - ${LTPROOT}/runtest/hyperthreading
> + ${LTPROOT}/runtest/hyperthreading \
> + ${LTPROOT}/runtest/tracing
> do
> [ -e "$SCENFILES" ] || \
> {
> diff --git a/runtest/tracing b/runtest/tracing
> new file mode 100644
> index 0000000..ef3a048
> --- /dev/null
> +++ b/runtest/tracing
> @@ -0,0 +1,2 @@
> +#DESCRIPTION:Tracing testing
> +ftrace-stress-test ftrace_stress_test.sh 90
> diff --git a/testcases/kernel/Makefile b/testcases/kernel/Makefile
> index e2a9d8e..8c50025 100644
> --- a/testcases/kernel/Makefile
> +++ b/testcases/kernel/Makefile
> @@ -30,7 +30,7 @@ include $(top_srcdir)/include/mk/env_pre.mk
> ifneq ($(UCLINUX),1)
> SUBDIRS := containers connectors controllers fs hotplug io ipc mem \
> numa performance_counters power_management pty sched \
> - security syscalls timers
> + security syscalls timers tracing
> else
> SUBDIRS := syscalls
> endif
> diff --git a/testcases/kernel/tracing/Makefile b/testcases/kernel/tracing/Makefile
> new file mode 100644
> index 0000000..e9f96c3
> --- /dev/null
> +++ b/testcases/kernel/tracing/Makefile
> @@ -0,0 +1,5 @@
> +top_srcdir ?= ../../..
> +
> +include $(top_srcdir)/include/mk/env_pre.mk
> +
> +include $(top_srcdir)/include/mk/generic_trunk_target.mk
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/Makefile b/testcases/kernel/tracing/ftrace_stress_test/Makefile
> new file mode 100644
> index 0000000..e4a913a
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/Makefile
> @@ -0,0 +1,7 @@
> +top_srcdir ?= ../../../..
> +
> +include $(top_srcdir)/include/mk/testcases.mk
> +
> +INSTALL_TARGETS := *.sh ftrace_stress/*
> +
> +include $(top_srcdir)/include/mk/generic_leaf_target.mk
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> new file mode 100644
> index 0000000..b52a109
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_get_page_size.c
> @@ -0,0 +1,10 @@
> +#include <unistd.h>
> +#include <stdio.h>
> +
> +int main(void)
> +{
> + printf("%d\n", getpagesize());
> +
> + return 0;
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> new file mode 100644
> index 0000000..bd67b37
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
> @@ -0,0 +1,37 @@
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <sys/utsname.h>
> +
> +int main(int argc, char **argv)
> +{
> + struct utsname uval;
> + int k1, k2, k3;
> + int a1, a2, a3;
> + unsigned long r1, r2;
> +
> + if (argc != 4) {
> + fprintf(stderr, "Wrong arguments!\n");
> + return -1;
> + }
> +
> + a1 = strtol(argv[1], NULL, 10);
> + a2 = strtol(argv[2], NULL, 10);
> + a3 = strtol(argv[3], NULL, 10);
> +
> + uname(&uval);
> +
> + sscanf(uval.release, "%d.%d.%d", &k1, &k2, &k3);
> +
> + r1 = (a1 << 16) + (a2 << 8) + a3;
> + r2 = (k1 << 16) + (k2 << 8) + k3;
> +
> + if (r1 > r2)
> + return 0;
> + else if (r1 == r2)
> + return 1;
> + else
> + return 2;
> +}
This application could be replaced with tst_kvercmp out of the box;
there's no reason why another program needs to be created for this.
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> new file mode 100755
> index 0000000..af5a98e
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_buffer_size.sh
> @@ -0,0 +1,43 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +# Use up to 10% of free memory
> +free_mem=`cat /proc/meminfo | grep '^MemFree' | awk '{ print $2 }'`
> +step=$(( $free_mem / 10 / $LOOP ))
> +if [ $step -eq 0 ]; then
> + $step=1
> + LOOP=50
> +fi
> +
> +for ((; ;))
> +{
> + new_size=1
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo $new_size > "$TRACING_PATH"/buffer_size_kb
> + new_size=$(( $new_size + $step ))
> + }
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + new_size=$(( $new_size - $step ))
> + echo $new_size > "$TRACING_PATH"/buffer_size_kb
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> new file mode 100755
> index 0000000..1baed96
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_current_tracer.sh
> @@ -0,0 +1,34 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + for tracer in `cat "$TRACING_PATH"/available_tracers`;
If you're going to split the for section of the loop from the do
section, there's no need to use a semicolon.
> + do
> + if [ "$tracer" == mmiotrace ]; then
Bashism. Replace == with = .
> + continue
> + fi
> +
> + echo $tracer > "$TRACING_PATH"/current_tracer 2> /dev/null
> + done
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> new file mode 100755
> index 0000000..20bb234
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_ftrace_enabled.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > /proc/sys/kernel/ftrace_enabled
> + echo 1 > /proc/sys/kernel/ftrace_enabled
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 1 > /proc/sys/kernel/ftrace_enabled
> + else
> + echo 0 > /proc/sys/kernel/ftrace_enabled
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> new file mode 100755
> index 0000000..9c6162a
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_profile_enabled.sh
> @@ -0,0 +1,50 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 1 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + else
> + echo 0 > "$TRACING_PATH"/function_profile_enabled 2> /dev/null
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> new file mode 100755
> index 0000000..f876414
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_event.sh
> @@ -0,0 +1,44 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < 100; i++))
> + {
> + echo 1 > "$TRACING_PATH"/events/enable
> + echo 0 > "$TRACING_PATH"/events/enable
> + }
> +
> + for dir in `ls $TRACING_PATH/events/`;
> + do
> + if [ ! -d $dir -o "$dir" == ftrace ]; then
> + continue;
> + fi
> +
> + for ((i = 0; i < 20; i++))
> + {
> + echo 1 > "$TRACING_PATH"/events/$dir/enable
> + echo 0 > "$TRACING_PATH"/events/$dir/enable
> + }
> + done
> +
> + for event in `cat $TRACING_PATH/available_events`;
> + do
> + echo $event >> "$TRACING_PATH"/set_event
> + done
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> new file mode 100755
> index 0000000..541215c
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_set_ftrace_pid.sh
> @@ -0,0 +1,44 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=300
> +
> +if [ ! -e "$TRACING_PATH"/set_ftrace_pid ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ; ))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((j = 0; j < $LOOP; j++))
> + {
> + for ((k = 1; k <= NR_PIDS; k++))
> + {
> + str="\$pid$k"
> + eval echo $str >> "$TRACING_PATH"/set_ftrace_pid
> + }
> +
> + echo > "$TRACING_PATH"/set_ftrace_pid
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> new file mode 100755
> index 0000000..682d05e
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_max_size.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_STACK_SIZE=8192
> +
> +if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $MAX_STACK_SIZE; i += 70))
> + {
> + echo $i > "$TRACING_PATH"/stack_max_size
> + cat "$TRACING_PATH"/stack_max_size > /dev/null
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> new file mode 100755
> index 0000000..a406c51
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_stack_trace.sh
> @@ -0,0 +1,46 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=400
> +
> +if [ ! -e /proc/sys/kernel/stack_tracer_enabled ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/stack_trace > /dev/null
> + }
> +
> + sleep 1
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo 0 > /proc/sys/kernel/stack_tracer_enabled
> + echo 1 > /proc/sys/kernel/stack_tracer_enabled
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> new file mode 100755
> index 0000000..e36712b
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace.sh
> @@ -0,0 +1,27 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace > /dev/null
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> new file mode 100755
> index 0000000..51f2507
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_clock.sh
> @@ -0,0 +1,46 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=400
> +
> +# In kernel which is older than 2.6.32, we set global clock
> +# via trace_options.
> +./ftrace_kvercmp 2 6 32
> +if [ $? -eq 0 ]; then
> + old_kernel=1
> +else
> + old_kernel=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $old_kernel -eq 1 ];
> + then
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo 1 > "$TRACING_PATH"/options/global-clock
> + echo 0 > "$TRACING_PATH"/options/global-clock
> + }
> + else
> + for ((i = 0; i < $LOOP; i++))
> + {
> + echo local > "$TRACING_PATH"/trace_clock
> + echo global > "$TRACING_PATH"/trace_clock
> + }
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> new file mode 100755
> index 0000000..47d2a62
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_options.sh
> @@ -0,0 +1,42 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +trace_options=(print-parent sym-offset sym-addr verbose raw hex bin block trace_printk ftrace_preempt branch annotate userstacktrace sym-userobj printk-msg-only context-info latency-format sleep-time graph-time)
> +
> +NR_TRACE_OPTIONS=19
> +
> +for ((; ; ))
> +{
> + for ((j = 0; j < $LOOP; j++))
> + {
> + num=`date +%N`
> + num=`printf 1%s $num`
> +
> + for ((i = 0; i < $NR_TRACE_OPTIONS; i++))
> + {
> + n=$(( ( $num >> $i ) % 2 ))
> + if [ $n -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/options/${trace_options[$i]}
> + else
> + echo 1 > "$TRACING_PATH"/options/${trace_options[$i]}
> + fi
> + }
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> new file mode 100755
> index 0000000..cccb7ae
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_pipe.sh
> @@ -0,0 +1,43 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +kill_this_pid()
> +{
> + /bin/kill -SIGKILL $this_pid
kill shouldn't be explicitly called out as /bin/kill. IIRC there are
some distros out there that place this elsewhere.
> + wait $this_pid
> + exit 0
> +}
> +
> +trap kill_this_pid SIGUSR1
> +
> +LOOP=20
> +
> +for ((; ;))
> +{
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace_pipe > /dev/null &
> +
> + this_pid=$!
> + usleep 200000
Is usleep a standard linux command (I didn't think so, but I could be wrong..)?
> + /bin/kill -SIGINT $this_pid
> + wait $this_pid
> + this_pid=0
> + usleep 200000
> + }
> +
> + sleep 2
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> new file mode 100755
> index 0000000..ad6859f
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_trace_stat.sh
> @@ -0,0 +1,45 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +LOOP=200
> +
> +should_skip=0
> +
> +if [ ! -e "$TRACING_PATH"/function_profile_enabled ]; then
> + should_skip=1
> +fi
> +
> +# For kernels older than 2.6.36, this testcase can result in
> +# divide-by-zero kernel bug
> +"$TPATH"/ftrace_kvercmp 2 6 36
> +if [ $? -eq 0 ]; then
> + should_skip=1
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $LOOP; i++))
> + {
> + cat "$TRACING_PATH"/trace_stat/function0 > /dev/null 2>&1
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> new file mode 100755
> index 0000000..69f2ae6
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_enabled.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/tracing_enabled
> + echo 1 > "$TRACING_PATH"/tracing_enabled
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/tracing_enabled
> + else
> + echo 1 > "$TRACING_PATH"/tracing_enabled
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> new file mode 100755
> index 0000000..f19d734
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_max_latency.sh
> @@ -0,0 +1,38 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# This program is free software; you can redistribute it and/or modify it #
> +# under the terms of the GNU General Public License as published by the Free #
> +# Software Foundation; either version 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LATENCY=100000
> +
> +if [ ! -e "$TRACING_PATH"/tracing_max_latency ]; then
> + should_skip=1
> +else
> + should_skip=0
> +fi
> +
> +for ((; ;))
> +{
> + if [ $should_skip -eq 1 ]; then
> + sleep 2
> + continue
> + fi
> +
> + for ((i = 0; i < $MAX_LATENCY; i += 400))
> + {
> + echo $i > "$TRACING_PATH"/tracing_max_latency
> + }
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> new file mode 100755
> index 0000000..672c223
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress/ftrace_tracing_on.sh
> @@ -0,0 +1,39 @@
> +#! /bin/sh
> +
> +###############################################################################
> +# #
> +# Copyright (c) 2010 FUJITSU LIMITED #
> +# #
> +# 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 2 of the License, or (at your option) #
> +# any later version. #
> +# #
> +# Author: Li Zefan <lizf@cn.fujitsu.com> #
> +# #
> +###############################################################################
> +
> +MAX_LOOP=1500
> +count=0
> +
> +for ((; ;))
> +{
> + count=$(( $count + 1 ))
> +
> + for ((i = 0; i < $MAX_LOOP; i++))
> + {
> + echo 0 > "$TRACING_PATH"/tracing_on
> + echo 1 > "$TRACING_PATH"/tracing_on
> + }
> +
> + enable=$(( $count % 3 ))
> +
> + if [ $enable -eq 0 ]; then
> + echo 0 > "$TRACING_PATH"/tracing_on
> + else
> + echo 1 > "$TRACING_PATH"/tracing_on
> + fi
> +
> + sleep 1
> +}
> +
> diff --git a/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
> new file mode 100755
> index 0000000..3e6c4b7
> --- /dev/null
> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_stress_test.sh
> @@ -0,0 +1,237 @@
> +#! /bin/sh
> +
> +################################################################################
> +## ##
> +## Copyright (c) 2010 FUJITSU LIMITED ##
> +## ##
> +## 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 2 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, write to the Free Software ##
> +## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
> +## ##
> +## Author: Li Zefan <lizf@cn.fujitsu.com> ##
> +## ##
> +################################################################################
> +
> +cd $LTPROOT/testcases/bin
> +
> +export TCID="ftrace-stress-test"
> +export TST_TOTAL=1
> +export TST_COUNT=1
> +
> +export TPATH="$PWD"
> +export DEBUGFS_PATH="$PWD/debugfs"
> +export TRACING_PATH="$PWD/debugfs/tracing"
> +export SPATH="$TPATH/ftrace_stress"
> +
> +test_interval=$1
> +
> +save_old_setting()
> +{
> + cd $TRACING_PATH
> +
> + old_trace_options=( `cat trace_options` )
> + old_tracing_on=`cat tracing_on`
> + old_tracing_enabled=`cat tracing_enabled`
> + old_buffer_size=`cat buffer_size_kb`
> +
> + if [ -e stack_max_size ]; then
> + old_stack_tracer_enabled=`cat /proc/sys/kernel/stack_tracer_enabled`
> + fi
> +
> + if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
> + old_ftrace_enabled=`cat /proc/sys/kernel/ftrace_enabled`
> + fi
> +
> + if [ -e "function_profile_enabled" ]; then
> + old_profile_enabled=`cat function_profile_enabled`
> + fi
> +
> + cd - > /dev/null
> +}
> +
> +restore_old_setting()
> +{
> + cd $TRACING_PATH
> +
> + echo nop > current_tracer
> + echo 0 > events/enable
> + echo 0 > tracing_max_latency 2> /dev/null
> +
> + if [ -e trace_clock ]; then
> + echo local > trace_clock
> + fi
> +
> + if [ -e "function_pofile_enabled" ]; then
> + echo $old_profile_enabled > function_profile_enabled
> + fi
> +
> + if [ -e "/proc/sys/kernel/ftrace_enabled" ]; then
> + echo $old_ftrace_enabled > /proc/sys/kernel/ftrace_enabled
> + fi
> +
> + if [ -e stack_max_size ]; then
> + echo $old_stack_tracer_enabled > /proc/sys/kernel/stack_tracer_enabled
> + echo 0 > stack_max_size
> + fi
> +
> + echo $old_buffer_size > buffer_size_kb
> + echo $old_tracing_on > tracing_on
> + echo $old_tracing_enabled > tracing_enabled
> +
> + for option in ${old_trace_options[*]};
Arrays don't exist in portable shell; just do something like:
for option in $old_trace_options
Will the options contain spaces (and hence, be split by accident)?
> + do
> + echo $option > trace_options 2> /dev/null
> + done
> +
> + echo > trace
> +
> + cd - > /dev/null
> +}
> +
> +clean_up()
> +{
> + /bin/kill -SIGKILL $pid1
> + /bin/kill -SIGKILL $pid2
> + /bin/kill -SIGKILL $pid3
> + /bin/kill -SIGKILL $pid4
> + /bin/kill -SIGKILL $pid5
> + /bin/kill -SIGKILL $pid6
> + /bin/kill -SIGKILL $pid7
> + /bin/kill -SIGKILL $pid8
> + /bin/kill -SIGKILL $pid9
> + /bin/kill -SIGKILL $pid10
> + /bin/kill -SIGKILL $pid11
> + /bin/kill -SIGUSR1 $pid12
> + /bin/kill -SIGKILL $pid13
> + /bin/kill -SIGKILL $pid14
> + /bin/kill -SIGKILL $pid15
> + /bin/kill -SIGKILL $pid16
> +
> + sleep 2
> + restore_old_setting
> +
> + umount $DEBUGFS_PATH
> + rmdir $DEBUGFS_PATH
> +}
> +
> +clean_up_exit()
> +{
> + clean_up
> + exit 1
> +}
> +
> +export_pids()
> +{
> + export pid1 pid2 pid3 pid4 pid5 pid6 pid7 pid8 pid9 pid10 pid11 pid12 \
> + pid13 pid14 pid15 pid16
> +
> + export NR_PIDS=16
> +}
> +
> +test_begin()
> +{
> + start_time=`date +%s`
> +}
> +
> +test_wait()
> +{
> + for ((; ;))
> + {
> + sleep 2
> +
> + cur_time=`date +%s`
> + elapsed=$(( $cur_time - $start_time ))
> +
> + # run the stress test for $test_interval secs
> + if [ $elapsed -ge $test_interval ]; then
> + break
> + fi
> + }
> +}
> +
> +trap clean_up_exit SIGINT
> +
> +# Should be run by root user
> +if [ "`whoami`" != "root" ]; then
id -ru = 0 is better.
> + tst_brkm TCONF ignored "The test should be run by root user. Skip the test..."
> + exit 0
> +fi
> +
> +# Don't run the test on kernels older than 2.6.34, otherwise
> +# it can crash the system if the kernel is not latest-stable
> +./ftrace_kvercmp 2 6 34
> +if [ $? -eq 0 ]; then
> + tst_brkm TCONF ignored "The test should be run in kernels >= 2.6.34. Skip the test..."
> + exit 0
> +fi
> +
> +mkdir $DEBUGFS_PATH
> +mount -t debugfs xxx $DEBUGFS_PATH
> +
> +# Check to see tracing feature is supported or not
> +if [ ! -d $TRACING_PATH ]; then
> + tst_brkm TCONF ignored "Tracing is not supported. Skip the test..."
> + umount $DEBUGFS_PATH
> + rmdir $DEBUGFS_PATH
> + exit 0
> +fi
> +
> +echo "Ftrace Stress Test Begin"
> +
> +save_old_setting
> +
> +test_begin
> +
> +$SPATH/ftrace_trace_clock.sh &
> +pid1=$!
> +$SPATH/ftrace_current_tracer.sh &
> +pid2=$!
> +$SPATH/ftrace_trace_options.sh &
> +pid3=$!
> +$SPATH/ftrace_tracing_max_latency.sh &
> +pid4=$!
> +$SPATH/ftrace_stack_trace.sh &
> +pid5=$!
> +$SPATH/ftrace_stack_max_size.sh &
> +pid6=$!
> +$SPATH/ftrace_tracing_on.sh &
> +pid7=$!
> +$SPATH/ftrace_tracing_enabled.sh &
> +pid8=$!
> +$SPATH/ftrace_set_event.sh &
> +pid9=$!
> +$SPATH/ftrace_buffer_size.sh &
> +pid10=$!
> +$SPATH/ftrace_trace.sh &
> +pid11=$!
> +$SPATH/ftrace_trace_pipe.sh &
> +pid12=$!
> +$SPATH/ftrace_ftrace_enabled.sh &
> +pid13=$!
> +$SPATH/ftrace_set_ftrace_pid.sh &
> +pid14=$!
> +$SPATH/ftrace_profile_enabled.sh &
> +pid15=$!
> +$SPATH/ftrace_trace_stat.sh &
> +pid16=$!
> +
> +export_pids
> +
> +test_wait
> +
> +clean_up
> +
> +echo "Ftrace Stress Test End"
> +
> +tst_resm TPASS "finished running the test. Run dmesg to double-check for bugs"
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^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [LTP] [PATCH] Add ftrace-stress-test to LTP
2010-08-25 5:31 ` Garrett Cooper
@ 2010-09-02 1:08 ` Li Zefan
0 siblings, 0 replies; 9+ messages in thread
From: Li Zefan @ 2010-09-02 1:08 UTC (permalink / raw)
To: Garrett Cooper
Cc: ltp-list, Frederic Weisbecker, Steven Rostedt, Eugene Teo,
Ingo Molnar, Andrew Morton
>> --- /dev/null
>> +++ b/testcases/kernel/tracing/ftrace_stress_test/ftrace_kvercmp.c
>> @@ -0,0 +1,37 @@
>> +#include <unistd.h>
>> +#include <stdlib.h>
>> +#include <stdio.h>
>> +#include <string.h>
>> +#include <sys/utsname.h>
>> +
>> +int main(int argc, char **argv)
>> +{
>> + struct utsname uval;
>> + int k1, k2, k3;
>> + int a1, a2, a3;
>> + unsigned long r1, r2;
>> +
>> + if (argc != 4) {
>> + fprintf(stderr, "Wrong arguments!\n");
>> + return -1;
>> + }
>> +
>> + a1 = strtol(argv[1], NULL, 10);
>> + a2 = strtol(argv[2], NULL, 10);
>> + a3 = strtol(argv[3], NULL, 10);
>> +
>> + uname(&uval);
>> +
>> + sscanf(uval.release, "%d.%d.%d", &k1, &k2, &k3);
>> +
>> + r1 = (a1 << 16) + (a2 << 8) + a3;
>> + r2 = (k1 << 16) + (k2 << 8) + k3;
>> +
>> + if (r1 > r2)
>> + return 0;
>> + else if (r1 == r2)
>> + return 1;
>> + else
>> + return 2;
>> +}
>
> This application could be replaced with tst_kvercmp out of the box;
> there's no reason why another program needs to be created for this.
>
This stress test was not written for LTP originally, so I had to write
this ftrace_kvercmp.
But I do have a reason to keep this. That is, using tst_kvercmp will
make it harder to run this test without LTP.
Anyway I'll remove it.
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^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2010-09-06 18:53 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-08-24 4:06 [LTP] [PATCH] Add ftrace-stress-test to LTP Li Zefan
2010-08-24 11:02 ` Subrata Modak
2010-08-25 1:25 ` Li Zefan
2010-08-25 2:41 ` Garrett Cooper
2010-08-25 2:59 ` Li Zefan
2010-09-06 16:16 ` Subrata Modak
2010-09-06 18:52 ` Garrett Cooper
2010-08-25 5:31 ` Garrett Cooper
2010-09-02 1:08 ` Li Zefan
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