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 testcasetirimbino
Linus Torvalds
10 years ago
commit
c32809521d
@ -0,0 +1,5 @@ |
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#!/bin/sh |
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# description: Basic event tracing check |
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test -f available_events -a -f set_event -a -d events |
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# check scheduler events are available |
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grep -q sched available_events && exit 0 || exit -1 |
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@ -0,0 +1,53 @@ |
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#!/bin/sh |
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# description: event tracing - enable/disable with event level files |
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|
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do_reset() { |
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echo > set_event |
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clear_trace |
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} |
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|
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fail() { #msg |
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do_reset |
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echo $1 |
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exit -1 |
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} |
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|
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if [ ! -f set_event -o ! -d events/sched ]; then |
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echo "event tracing is not supported" |
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exit_unsupported |
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fi |
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|
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reset_tracer |
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do_reset |
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|
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echo 'sched:sched_switch' > set_event |
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usleep 1 |
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|
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count=`cat trace | grep sched_switch | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "sched_switch events are not recorded" |
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fi |
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|
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do_reset |
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|
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echo 1 > events/sched/sched_switch/enable |
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usleep 1 |
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|
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count=`cat trace | grep sched_switch | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "sched_switch events are not recorded" |
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fi |
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|
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do_reset |
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|
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echo 0 > events/sched/sched_switch/enable |
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usleep 1 |
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|
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count=`cat trace | grep sched_switch | wc -l` |
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if [ $count -ne 0 ]; then |
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fail "sched_switch events should not be recorded" |
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fi |
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|
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do_reset |
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|
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exit 0 |
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@ -0,0 +1,53 @@ |
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#!/bin/sh |
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# description: event tracing - enable/disable with subsystem level files |
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|
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do_reset() { |
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echo > set_event |
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clear_trace |
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} |
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|
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fail() { #msg |
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do_reset |
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echo $1 |
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exit -1 |
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} |
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|
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if [ ! -f set_event -o ! -d events/sched ]; then |
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echo "event tracing is not supported" |
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exit_unsupported |
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fi |
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|
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reset_tracer |
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do_reset |
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|
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echo 'sched:*' > set_event |
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usleep 1 |
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|
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count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` |
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if [ $count -lt 3 ]; then |
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fail "at least fork, exec and exit events should be recorded" |
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fi |
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|
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do_reset |
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|
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echo 1 > events/sched/enable |
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usleep 1 |
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|
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count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` |
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if [ $count -lt 3 ]; then |
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fail "at least fork, exec and exit events should be recorded" |
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fi |
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|
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do_reset |
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|
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echo 0 > events/sched/enable |
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usleep 1 |
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|
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count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` |
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if [ $count -ne 0 ]; then |
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fail "any of scheduler events should not be recorded" |
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fi |
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|
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do_reset |
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|
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exit 0 |
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@ -0,0 +1,47 @@ |
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#!/bin/sh |
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# description: event tracing - enable/disable with top level files |
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|
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do_reset() { |
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echo > set_event |
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clear_trace |
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} |
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|
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fail() { #msg |
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do_reset |
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echo $1 |
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exit -1 |
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} |
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|
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if [ ! -f available_events -o ! -f set_event -o ! -d events ]; then |
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echo "event tracing is not supported" |
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exit_unsupported |
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fi |
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|
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reset_tracer |
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do_reset |
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|
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echo '*:*' > set_event |
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count=`cat trace | grep -v ^# | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "none of events are recorded" |
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fi |
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|
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do_reset |
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|
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echo 1 > events/enable |
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count=`cat trace | grep -v ^# | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "none of events are recorded" |
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fi |
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|
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do_reset |
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|
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echo 0 > events/enable |
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count=`cat trace | grep -v ^# | wc -l` |
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if [ $count -ne 0 ]; then |
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fail "any of events should not be recorded" |
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fi |
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|
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do_reset |
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exit 0 |
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@ -0,0 +1,89 @@ |
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#!/bin/sh |
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# description: ftrace - function graph filters with stack tracer |
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# Make sure that function graph filtering works, and is not |
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# affected by other tracers enabled (like stack tracer) |
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|
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if ! grep -q function_graph available_tracers; then |
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echo "no function graph tracer configured" |
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exit_unsupported |
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fi |
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|
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if [ ! -f set_ftrace_filter ]; then |
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echo "set_ftrace_filter not found? Is dynamic ftrace not set?" |
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exit_unsupported |
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fi |
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|
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do_reset() { |
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reset_tracer |
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echo 0 > /proc/sys/kernel/stack_tracer_enabled |
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enable_tracing |
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clear_trace |
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echo > set_ftrace_filter |
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} |
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|
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fail() { # msg |
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do_reset |
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echo $1 |
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exit -1 |
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} |
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|
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disable_tracing |
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clear_trace; |
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|
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# filter something, schedule is always good |
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if ! echo "schedule" > set_ftrace_filter; then |
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# test for powerpc 64 |
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if ! echo ".schedule" > set_ftrace_filter; then |
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fail "can not enable schedule filter" |
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fi |
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fi |
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|
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echo function_graph > current_tracer |
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if [ ! -f stack_trace ]; then |
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echo "Stack tracer not configured" |
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do_reset |
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exit_unsupported; |
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fi |
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echo "Now testing with stack tracer" |
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echo 1 > /proc/sys/kernel/stack_tracer_enabled |
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disable_tracing |
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clear_trace |
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enable_tracing |
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sleep 1 |
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|
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count=`cat trace | grep '()' | grep -v schedule | wc -l` |
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if [ $count -ne 0 ]; then |
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fail "Graph filtering not working with stack tracer?" |
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fi |
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|
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# Make sure we did find something |
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count=`cat trace | grep 'schedule()' | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "No schedule traces found?" |
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fi |
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echo 0 > /proc/sys/kernel/stack_tracer_enabled |
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clear_trace |
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sleep 1 |
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|
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|
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count=`cat trace | grep '()' | grep -v schedule | wc -l` |
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|
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if [ $count -ne 0 ]; then |
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fail "Graph filtering not working after stack tracer disabled?" |
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fi |
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|
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count=`cat trace | grep 'schedule()' | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "No schedule traces found?" |
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fi |
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|
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do_reset |
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|
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exit 0 |
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@ -0,0 +1,52 @@ |
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#!/bin/sh |
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# description: ftrace - function graph filters |
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# Make sure that function graph filtering works |
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|
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if ! grep -q function_graph available_tracers; then |
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echo "no function graph tracer configured" |
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exit_unsupported |
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fi |
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|
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do_reset() { |
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reset_tracer |
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enable_tracing |
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clear_trace |
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} |
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|
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fail() { # msg |
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do_reset |
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echo $1 |
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exit -1 |
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} |
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|
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disable_tracing |
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clear_trace |
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|
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# filter something, schedule is always good |
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if ! echo "schedule" > set_ftrace_filter; then |
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# test for powerpc 64 |
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if ! echo ".schedule" > set_ftrace_filter; then |
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fail "can not enable schedule filter" |
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fi |
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fi |
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|
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echo function_graph > current_tracer |
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enable_tracing |
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sleep 1 |
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# search for functions (has "()" on the line), and make sure |
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# that only the schedule function was found |
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count=`cat trace | grep '()' | grep -v schedule | wc -l` |
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if [ $count -ne 0 ]; then |
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fail "Graph filtering not working by itself?" |
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fi |
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|
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# Make sure we did find something |
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count=`cat trace | grep 'schedule()' | wc -l` |
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if [ $count -eq 0 ]; then |
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fail "No schedule traces found?" |
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fi |
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do_reset |
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exit 0 |
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@ -0,0 +1,80 @@ |
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#!/bin/sh |
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# description: ftrace - function profiler with function tracing |
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# There was a bug after a rewrite of the ftrace infrastructure that |
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# caused the function_profiler not to be able to run with the function |
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# tracer, because the function_profiler used the function_graph tracer |
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# and it was assumed the two could not run simultaneously. |
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# |
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# There was another related bug where the solution to the first bug |
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# broke the way filtering of the function tracer worked. |
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# |
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# This test triggers those bugs on those kernels. |
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# |
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# We need function_graph and profiling to to run this test |
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if ! grep -q function_graph available_tracers; then |
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echo "no function graph tracer configured" |
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exit_unsupported; |
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fi |
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|
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if [ ! -f set_ftrace_filter ]; then |
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echo "set_ftrace_filter not found? Is dynamic ftrace not set?" |
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exit_unsupported |
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fi |
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|
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if [ ! -f function_profile_enabled ]; then |
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echo "function_profile_enabled not found, function profiling enabled?" |
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exit_unsupported |
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fi |
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|
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fail() { # mesg |
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reset_tracer |
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echo > set_ftrace_filter |
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echo $1 |
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exit -1 |
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} |
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|
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echo "Testing function tracer with profiler:" |
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echo "enable function tracer" |
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echo function > current_tracer |
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echo "enable profiler" |
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echo 1 > function_profile_enabled |
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sleep 1 |
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echo "Now filter on just schedule" |
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echo '*schedule' > set_ftrace_filter |
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clear_trace |
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|
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echo "Now disable function profiler" |
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echo 0 > function_profile_enabled |
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sleep 1 |
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# make sure only schedule functions exist |
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|
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echo "testing if only schedule is being traced" |
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if grep -v -e '^#' -e 'schedule' trace; then |
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fail "more than schedule was found" |
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fi |
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|
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echo "Make sure schedule was traced" |
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if ! grep -e 'schedule' trace > /dev/null; then |
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cat trace |
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fail "can not find schedule in trace" |
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fi |
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|
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echo > set_ftrace_filter |
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clear_trace |
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|
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sleep 1 |
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|
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echo "make sure something other than scheduler is being traced" |
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if ! grep -v -e '^#' -e 'schedule' trace > /dev/null; then |
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cat trace |
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fail "no other functions besides schedule was found" |
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fi |
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|
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reset_tracer |
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|
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exit 0 |
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@ -0,0 +1,16 @@ |
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|
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clear_trace() { # reset trace output |
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echo > trace |
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} |
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|
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disable_tracing() { # stop trace recording |
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echo 0 > tracing_on |
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} |
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|
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enable_tracing() { # start trace recording |
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echo 1 > tracing_on |
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} |
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|
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reset_tracer() { # reset the current tracer |
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echo nop > current_tracer |
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} |
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@ -0,0 +1,55 @@ |
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#!/bin/sh |
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# description: Kprobe dynamic event with function tracer |
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|
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[ -f kprobe_events ] || exit_unsupported # this is configurable |
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grep function available_tracers || exit_unsupported # this is configurable |
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|
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# prepare |
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echo nop > current_tracer |
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echo do_fork > set_ftrace_filter |
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echo 0 > events/enable |
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echo > kprobe_events |
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echo 'p:testprobe do_fork' > kprobe_events |
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|
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# kprobe on / ftrace off |
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echo 1 > events/kprobes/testprobe/enable |
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echo > trace |
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( echo "forked") |
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grep testprobe trace |
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! grep 'do_fork <-' trace |
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|
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# kprobe on / ftrace on |
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echo function > current_tracer |
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echo > trace |
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( echo "forked") |
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grep testprobe trace |
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grep 'do_fork <-' trace |
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|
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# kprobe off / ftrace on |
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echo 0 > events/kprobes/testprobe/enable |
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echo > trace |
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( echo "forked") |
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! grep testprobe trace |
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grep 'do_fork <-' trace |
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|
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# kprobe on / ftrace on |
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echo 1 > events/kprobes/testprobe/enable |
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echo function > current_tracer |
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echo > trace |
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( echo "forked") |
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grep testprobe trace |
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grep 'do_fork <-' trace |
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|
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# kprobe on / ftrace off |
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echo nop > current_tracer |
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echo > trace |
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( echo "forked") |
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grep testprobe trace |
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! grep 'do_fork <-' trace |
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|
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# cleanup |
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echo nop > current_tracer |
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echo > set_ftrace_filter |
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echo 0 > events/kprobes/testprobe/enable |
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echo > kprobe_events |
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echo > trace |
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Loading…
Reference in new issue