Updates for the ftrace self tests:
o Added kprobes on ftrace testcase o Sort test cases o Add file to hold helper functions o Use logfile name supported by busybox's mktemp o Clear trace buffer after running kprobe test o Fix show descriptions when run on dash shell o Add --verbose option for showing echo output -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJUhbSvAAoJEEjnJuOKh9ldB84H+gNuE2PPvsxmgSxFP0bdo+Uw k/8C2QBU6xLXZFZvqXnH7P0gLP2OIjpOBOTKt+yjkB/Elm+XnMVV1Xy+k7VLBiMD g+DRoIcpJL2dOy/D8t/P4SjVNXt4Btwxf/tCTabbubLc+aBmvkEG4DL2Vk/Xl5+Y XH1dBgYvI9irAxgnYpBnPlN7WIWg1+WCshdOtqkNGRuyJ1G9gn0VlxGmNF7B+0ye cjFj19loPMGzmYBDgGCa9ypQHEP1F97t+WUEDrwCZsXLtaA7Z4bumXTrxKQWsmdT bDZQTEFcQ9EYQGvqbaz+nHb94P8cyFrSNvSiAAqhuc2ZqigYWUYDEvFjYxSSGAE= =eiD2 -----END PGP SIGNATURE----- Merge tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace self-test updates from Steven Rostedt: "Updates for the ftrace self tests: - Added kprobes on ftrace testcase - Sort test cases - Add file to hold helper functions - Use logfile name supported by busybox's mktemp - Clear trace buffer after running kprobe test - Fix show descriptions when run on dash shell - Add --verbose option for showing echo output" * tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftracetest: Add --verbose option for showing echo output ftracetest: Fix to show descriptions on dash ftracetest: Add basic event tracing test cases ftracetest: Clear trace buffer after running kprobe testcases ftracetest: Use logfile name supported by busybox's mktemp ftracetest: Add a couple of ftrace test cases ftracetest: Add functions file that holds helper functions ftracetest: Sort testcases ftracetest: Add kprobes on ftrace testcase
This commit is contained in:
commit
c32809521d
|
@ -13,6 +13,7 @@ echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
|
|||
echo " Options:"
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||||
echo " -h|--help Show help message"
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||||
echo " -k|--keep Keep passed test logs"
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||||
echo " -v|--verbose Show all stdout messages in testcases"
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||||
echo " -d|--debug Debug mode (trace all shell commands)"
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exit $1
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||||
}
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||||
|
@ -37,7 +38,7 @@ abspath() {
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|||
}
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||||
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||||
find_testcases() { #directory
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echo `find $1 -name \*.tc`
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echo `find $1 -name \*.tc | sort`
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}
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parse_opts() { # opts
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|
@ -53,6 +54,10 @@ parse_opts() { # opts
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|||
KEEP_LOG=1
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shift 1
|
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;;
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--verbose|-v)
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VERBOSE=1
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shift 1
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;;
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--debug|-d)
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DEBUG=1
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shift 1
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|
@ -90,6 +95,7 @@ TEST_CASES=`find_testcases $TEST_DIR`
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LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`/
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KEEP_LOG=0
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DEBUG=0
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VERBOSE=0
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# Parse command-line options
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parse_opts $*
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@ -135,15 +141,12 @@ TOTAL_RESULT=0
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CASENO=0
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testcase() { # testfile
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CASENO=$((CASENO+1))
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prlog -n "[$CASENO]"`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
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desc=`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
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prlog -n "[$CASENO]$desc"
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}
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eval_result() { # retval sigval
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local retval=$2
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if [ $2 -eq 0 ]; then
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test $1 -ne 0 && retval=$FAIL
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fi
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case $retval in
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eval_result() { # sigval
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case $1 in
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$PASS)
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prlog " [PASS]"
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PASSED_CASES="$PASSED_CASES $CASENO"
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@ -187,6 +190,9 @@ SIG_RESULT=
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SIG_BASE=36 # Use realtime signals
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SIG_PID=$$
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SIG_FAIL=$((SIG_BASE + FAIL))
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trap 'SIG_RESULT=$FAIL' $SIG_FAIL
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|
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SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
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||||
exit_unresolved () {
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||||
kill -s $SIG_UNRESOLVED $SIG_PID
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||||
|
@ -215,17 +221,25 @@ exit_xfail () {
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|||
}
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trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
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|
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__run_test() { # testfile
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# setup PID and PPID, $$ is not updated.
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(cd $TRACING_DIR; read PID _ < /proc/self/stat ; set -e; set -x; . $1)
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[ $? -ne 0 ] && kill -s $SIG_FAIL $SIG_PID
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}
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|
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# Run one test case
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run_test() { # testfile
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local testname=`basename $1`
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local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
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local testlog=`mktemp $LOG_DIR/${testname}-log.XXXXXX`
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testcase $1
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echo "execute: "$1 > $testlog
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SIG_RESULT=0
|
||||
# setup PID and PPID, $$ is not updated.
|
||||
(cd $TRACING_DIR; read PID _ < /proc/self/stat ;
|
||||
set -e; set -x; . $1) >> $testlog 2>&1
|
||||
eval_result $? $SIG_RESULT
|
||||
if [ $VERBOSE -ne 0 ]; then
|
||||
__run_test $1 2>> $testlog | tee -a $testlog
|
||||
else
|
||||
__run_test $1 >> $testlog 2>&1
|
||||
fi
|
||||
eval_result $SIG_RESULT
|
||||
if [ $? -eq 0 ]; then
|
||||
# Remove test log if the test was done as it was expected.
|
||||
[ $KEEP_LOG -eq 0 ] && rm $testlog
|
||||
|
@ -235,6 +249,9 @@ run_test() { # testfile
|
|||
fi
|
||||
}
|
||||
|
||||
# load in the helper functions
|
||||
. $TEST_DIR/functions
|
||||
|
||||
# Main loop
|
||||
for t in $TEST_CASES; do
|
||||
run_test $t
|
||||
|
|
|
@ -0,0 +1,5 @@
|
|||
#!/bin/sh
|
||||
# description: Basic event tracing check
|
||||
test -f available_events -a -f set_event -a -d events
|
||||
# check scheduler events are available
|
||||
grep -q sched available_events && exit 0 || exit -1
|
|
@ -0,0 +1,53 @@
|
|||
#!/bin/sh
|
||||
# description: event tracing - enable/disable with event level files
|
||||
|
||||
do_reset() {
|
||||
echo > set_event
|
||||
clear_trace
|
||||
}
|
||||
|
||||
fail() { #msg
|
||||
do_reset
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
if [ ! -f set_event -o ! -d events/sched ]; then
|
||||
echo "event tracing is not supported"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
reset_tracer
|
||||
do_reset
|
||||
|
||||
echo 'sched:sched_switch' > set_event
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep sched_switch | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "sched_switch events are not recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 1 > events/sched/sched_switch/enable
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep sched_switch | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "sched_switch events are not recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 0 > events/sched/sched_switch/enable
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep sched_switch | wc -l`
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "sched_switch events should not be recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,53 @@
|
|||
#!/bin/sh
|
||||
# description: event tracing - enable/disable with subsystem level files
|
||||
|
||||
do_reset() {
|
||||
echo > set_event
|
||||
clear_trace
|
||||
}
|
||||
|
||||
fail() { #msg
|
||||
do_reset
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
if [ ! -f set_event -o ! -d events/sched ]; then
|
||||
echo "event tracing is not supported"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
reset_tracer
|
||||
do_reset
|
||||
|
||||
echo 'sched:*' > set_event
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
||||
if [ $count -lt 3 ]; then
|
||||
fail "at least fork, exec and exit events should be recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 1 > events/sched/enable
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
||||
if [ $count -lt 3 ]; then
|
||||
fail "at least fork, exec and exit events should be recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 0 > events/sched/enable
|
||||
usleep 1
|
||||
|
||||
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "any of scheduler events should not be recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,47 @@
|
|||
#!/bin/sh
|
||||
# description: event tracing - enable/disable with top level files
|
||||
|
||||
do_reset() {
|
||||
echo > set_event
|
||||
clear_trace
|
||||
}
|
||||
|
||||
fail() { #msg
|
||||
do_reset
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then
|
||||
echo "event tracing is not supported"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
reset_tracer
|
||||
do_reset
|
||||
|
||||
echo '*:*' > set_event
|
||||
count=`cat trace | grep -v ^# | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "none of events are recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 1 > events/enable
|
||||
count=`cat trace | grep -v ^# | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "none of events are recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
echo 0 > events/enable
|
||||
count=`cat trace | grep -v ^# | wc -l`
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "any of events should not be recorded"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,89 @@
|
|||
#!/bin/sh
|
||||
# description: ftrace - function graph filters with stack tracer
|
||||
|
||||
# Make sure that function graph filtering works, and is not
|
||||
# affected by other tracers enabled (like stack tracer)
|
||||
|
||||
if ! grep -q function_graph available_tracers; then
|
||||
echo "no function graph tracer configured"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
if [ ! -f set_ftrace_filter ]; then
|
||||
echo "set_ftrace_filter not found? Is dynamic ftrace not set?"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
do_reset() {
|
||||
reset_tracer
|
||||
echo 0 > /proc/sys/kernel/stack_tracer_enabled
|
||||
enable_tracing
|
||||
clear_trace
|
||||
echo > set_ftrace_filter
|
||||
}
|
||||
|
||||
fail() { # msg
|
||||
do_reset
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
disable_tracing
|
||||
clear_trace;
|
||||
|
||||
# filter something, schedule is always good
|
||||
if ! echo "schedule" > set_ftrace_filter; then
|
||||
# test for powerpc 64
|
||||
if ! echo ".schedule" > set_ftrace_filter; then
|
||||
fail "can not enable schedule filter"
|
||||
fi
|
||||
fi
|
||||
|
||||
echo function_graph > current_tracer
|
||||
|
||||
if [ ! -f stack_trace ]; then
|
||||
echo "Stack tracer not configured"
|
||||
do_reset
|
||||
exit_unsupported;
|
||||
fi
|
||||
|
||||
echo "Now testing with stack tracer"
|
||||
|
||||
echo 1 > /proc/sys/kernel/stack_tracer_enabled
|
||||
|
||||
disable_tracing
|
||||
clear_trace
|
||||
enable_tracing
|
||||
sleep 1
|
||||
|
||||
count=`cat trace | grep '()' | grep -v schedule | wc -l`
|
||||
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "Graph filtering not working with stack tracer?"
|
||||
fi
|
||||
|
||||
# Make sure we did find something
|
||||
count=`cat trace | grep 'schedule()' | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "No schedule traces found?"
|
||||
fi
|
||||
|
||||
echo 0 > /proc/sys/kernel/stack_tracer_enabled
|
||||
clear_trace
|
||||
sleep 1
|
||||
|
||||
|
||||
count=`cat trace | grep '()' | grep -v schedule | wc -l`
|
||||
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "Graph filtering not working after stack tracer disabled?"
|
||||
fi
|
||||
|
||||
count=`cat trace | grep 'schedule()' | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "No schedule traces found?"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,52 @@
|
|||
#!/bin/sh
|
||||
# description: ftrace - function graph filters
|
||||
|
||||
# Make sure that function graph filtering works
|
||||
|
||||
if ! grep -q function_graph available_tracers; then
|
||||
echo "no function graph tracer configured"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
do_reset() {
|
||||
reset_tracer
|
||||
enable_tracing
|
||||
clear_trace
|
||||
}
|
||||
|
||||
fail() { # msg
|
||||
do_reset
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
disable_tracing
|
||||
clear_trace
|
||||
|
||||
# filter something, schedule is always good
|
||||
if ! echo "schedule" > set_ftrace_filter; then
|
||||
# test for powerpc 64
|
||||
if ! echo ".schedule" > set_ftrace_filter; then
|
||||
fail "can not enable schedule filter"
|
||||
fi
|
||||
fi
|
||||
|
||||
echo function_graph > current_tracer
|
||||
enable_tracing
|
||||
sleep 1
|
||||
# search for functions (has "()" on the line), and make sure
|
||||
# that only the schedule function was found
|
||||
count=`cat trace | grep '()' | grep -v schedule | wc -l`
|
||||
if [ $count -ne 0 ]; then
|
||||
fail "Graph filtering not working by itself?"
|
||||
fi
|
||||
|
||||
# Make sure we did find something
|
||||
count=`cat trace | grep 'schedule()' | wc -l`
|
||||
if [ $count -eq 0 ]; then
|
||||
fail "No schedule traces found?"
|
||||
fi
|
||||
|
||||
do_reset
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,80 @@
|
|||
#!/bin/sh
|
||||
# description: ftrace - function profiler with function tracing
|
||||
|
||||
# There was a bug after a rewrite of the ftrace infrastructure that
|
||||
# caused the function_profiler not to be able to run with the function
|
||||
# tracer, because the function_profiler used the function_graph tracer
|
||||
# and it was assumed the two could not run simultaneously.
|
||||
#
|
||||
# There was another related bug where the solution to the first bug
|
||||
# broke the way filtering of the function tracer worked.
|
||||
#
|
||||
# This test triggers those bugs on those kernels.
|
||||
#
|
||||
# We need function_graph and profiling to to run this test
|
||||
if ! grep -q function_graph available_tracers; then
|
||||
echo "no function graph tracer configured"
|
||||
exit_unsupported;
|
||||
fi
|
||||
|
||||
if [ ! -f set_ftrace_filter ]; then
|
||||
echo "set_ftrace_filter not found? Is dynamic ftrace not set?"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
if [ ! -f function_profile_enabled ]; then
|
||||
echo "function_profile_enabled not found, function profiling enabled?"
|
||||
exit_unsupported
|
||||
fi
|
||||
|
||||
fail() { # mesg
|
||||
reset_tracer
|
||||
echo > set_ftrace_filter
|
||||
echo $1
|
||||
exit -1
|
||||
}
|
||||
|
||||
echo "Testing function tracer with profiler:"
|
||||
echo "enable function tracer"
|
||||
echo function > current_tracer
|
||||
echo "enable profiler"
|
||||
echo 1 > function_profile_enabled
|
||||
|
||||
sleep 1
|
||||
|
||||
echo "Now filter on just schedule"
|
||||
echo '*schedule' > set_ftrace_filter
|
||||
clear_trace
|
||||
|
||||
echo "Now disable function profiler"
|
||||
echo 0 > function_profile_enabled
|
||||
|
||||
sleep 1
|
||||
|
||||
# make sure only schedule functions exist
|
||||
|
||||
echo "testing if only schedule is being traced"
|
||||
if grep -v -e '^#' -e 'schedule' trace; then
|
||||
fail "more than schedule was found"
|
||||
fi
|
||||
|
||||
echo "Make sure schedule was traced"
|
||||
if ! grep -e 'schedule' trace > /dev/null; then
|
||||
cat trace
|
||||
fail "can not find schedule in trace"
|
||||
fi
|
||||
|
||||
echo > set_ftrace_filter
|
||||
clear_trace
|
||||
|
||||
sleep 1
|
||||
|
||||
echo "make sure something other than scheduler is being traced"
|
||||
if ! grep -v -e '^#' -e 'schedule' trace > /dev/null; then
|
||||
cat trace
|
||||
fail "no other functions besides schedule was found"
|
||||
fi
|
||||
|
||||
reset_tracer
|
||||
|
||||
exit 0
|
|
@ -0,0 +1,16 @@
|
|||
|
||||
clear_trace() { # reset trace output
|
||||
echo > trace
|
||||
}
|
||||
|
||||
disable_tracing() { # stop trace recording
|
||||
echo 0 > tracing_on
|
||||
}
|
||||
|
||||
enable_tracing() { # start trace recording
|
||||
echo 1 > tracing_on
|
||||
}
|
||||
|
||||
reset_tracer() { # reset the current tracer
|
||||
echo nop > current_tracer
|
||||
}
|
|
@ -9,3 +9,4 @@ echo p:myevent do_fork > kprobe_events
|
|||
grep myevent kprobe_events
|
||||
test -d events/kprobes/myevent
|
||||
echo > kprobe_events
|
||||
clear_trace
|
||||
|
|
|
@ -11,3 +11,4 @@ echo 1 > events/kprobes/myevent/enable
|
|||
echo > kprobe_events && exit 1 # this must fail
|
||||
echo 0 > events/kprobes/myevent/enable
|
||||
echo > kprobe_events # this must succeed
|
||||
clear_trace
|
||||
|
|
|
@ -12,5 +12,6 @@ echo 1 > events/kprobes/testprobe/enable
|
|||
( echo "forked")
|
||||
echo 0 > events/kprobes/testprobe/enable
|
||||
echo "-:testprobe" >> kprobe_events
|
||||
clear_trace
|
||||
test -d events/kprobes/testprobe && exit 1 || exit 0
|
||||
|
||||
|
|
|
@ -0,0 +1,55 @@
|
|||
#!/bin/sh
|
||||
# description: Kprobe dynamic event with function tracer
|
||||
|
||||
[ -f kprobe_events ] || exit_unsupported # this is configurable
|
||||
grep function available_tracers || exit_unsupported # this is configurable
|
||||
|
||||
# prepare
|
||||
echo nop > current_tracer
|
||||
echo do_fork > set_ftrace_filter
|
||||
echo 0 > events/enable
|
||||
echo > kprobe_events
|
||||
echo 'p:testprobe do_fork' > kprobe_events
|
||||
|
||||
# kprobe on / ftrace off
|
||||
echo 1 > events/kprobes/testprobe/enable
|
||||
echo > trace
|
||||
( echo "forked")
|
||||
grep testprobe trace
|
||||
! grep 'do_fork <-' trace
|
||||
|
||||
# kprobe on / ftrace on
|
||||
echo function > current_tracer
|
||||
echo > trace
|
||||
( echo "forked")
|
||||
grep testprobe trace
|
||||
grep 'do_fork <-' trace
|
||||
|
||||
# kprobe off / ftrace on
|
||||
echo 0 > events/kprobes/testprobe/enable
|
||||
echo > trace
|
||||
( echo "forked")
|
||||
! grep testprobe trace
|
||||
grep 'do_fork <-' trace
|
||||
|
||||
# kprobe on / ftrace on
|
||||
echo 1 > events/kprobes/testprobe/enable
|
||||
echo function > current_tracer
|
||||
echo > trace
|
||||
( echo "forked")
|
||||
grep testprobe trace
|
||||
grep 'do_fork <-' trace
|
||||
|
||||
# kprobe on / ftrace off
|
||||
echo nop > current_tracer
|
||||
echo > trace
|
||||
( echo "forked")
|
||||
grep testprobe trace
|
||||
! grep 'do_fork <-' trace
|
||||
|
||||
# cleanup
|
||||
echo nop > current_tracer
|
||||
echo > set_ftrace_filter
|
||||
echo 0 > events/kprobes/testprobe/enable
|
||||
echo > kprobe_events
|
||||
echo > trace
|
|
@ -12,4 +12,5 @@ echo 1 > events/kprobes/testprobe2/enable
|
|||
( echo "forked")
|
||||
echo 0 > events/kprobes/testprobe2/enable
|
||||
echo '-:testprobe2' >> kprobe_events
|
||||
clear_trace
|
||||
test -d events/kprobes/testprobe2 && exit 1 || exit 0
|
||||
|
|
Loading…
Reference in New Issue