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Commit f06eec4d authored by Rajvi Jingar's avatar Rajvi Jingar Committed by Steven Rostedt (VMware)
Browse files

selftests: ftrace: Add inter-event hist triggers testcases 

    This adds inter-event hist triggers testcases which covers following:
     - create/remove synthetic event
     - disable histogram for synthetic event
     - extended error support
     - field variable support
     - histogram variables
     - histogram trigger onmatch action
     - histogram trigger onmax action
     - histogram trigger onmatch-onmax action
     - simple expression support
     - combined histogram

    Here is the test result.
    === Ftrace unit tests ===
    [1] event trigger - test extended error support [PASS]
    [2] event trigger - test field variable support [PASS]
    [3] event trigger - test inter-event combined histogram trigger [PASS]
    [4] event trigger - test inter-event histogram trigger onmatch action   [PASS]
    [5] event trigger - test inter-event histogram trigger onmatch-onmax action     [PASS]
    [6] event trigger - test inter-event histogram trigger onmax action     [PASS]
    [7] event trigger - test synthetic event create remove  [PASS]

Link: http://lkml.kernel.org/r/e07ef1e72f7bf0f84dc87c9b736d6dc91b4b0b49.1516069914.git.tom.zanussi@linux.intel.com



Signed-off-by: default avatarRajvi Jingar <rajvi.jingar@intel.com>
Signed-off-by: default avatarTom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 89e270c1

tools/testing/selftests/ftrace/test.d/functions

+7 −0
Original line number Diff line number Diff line
@@ -59,6 +59,13 @@ disable_events() { 
    echo 0 > events/enable

}



clear_synthetic_events() { # reset all current synthetic events

    grep -v ^# synthetic_events |

    while read line; do

        echo "!$line" >> synthetic_events

    done

}



initialize_ftrace() { # Reset ftrace to initial-state

# As the initial state, ftrace will be set to nop tracer,

# no events, no triggers, no filters, no function filters,

tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-extended-error-support.tc

0 → 100644
+39 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test extended error support





do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit_fail

}



if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f synthetic_events ]; then

    echo "synthetic event is not supported"

    exit_unsupported

fi



reset_tracer

do_reset



echo "Test extended error support"

echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger

echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger &>/dev/null

if ! grep -q "ERROR:" events/sched/sched_wakeup/hist; then

    fail "Failed to generate extended error in histogram"

fi



do_reset



exit 0

tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc

0 → 100644
+54 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test field variable support



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit_fail

}



if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f synthetic_events ]; then

    echo "synthetic event is not supported"

    exit_unsupported

fi



clear_synthetic_events

reset_tracer

do_reset



echo "Test field variable support"



echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events

echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger

echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger

echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger



ping localhost -c 3

if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then

    fail "Failed to create inter-event histogram"

fi



if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then

    fail "Failed to create histogram with field variable"

fi



echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger



if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then

    fail "Failed to remove histogram with field variable"

fi



do_reset



exit 0

tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc

0 → 100644
+58 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test inter-event combined histogram trigger



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit_fail

}



if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f synthetic_events ]; then

    echo "synthetic event is not supported"

    exit_unsupported

fi



reset_tracer

do_reset

clear_synthetic_events



echo "Test create synthetic event"



echo 'waking_latency  u64 lat pid_t pid' > synthetic_events

if [ ! -d events/synthetic/waking_latency ]; then

    fail "Failed to create waking_latency synthetic event"

fi



echo "Test combined histogram"



echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger

echo 'hist:keys=pid:waking_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger

echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger



echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events

echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger

echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger



echo 'waking+wakeup_latency u64 lat; pid_t pid' >> synthetic_events

echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking+wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger

echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking+wakeup_latency/trigger



ping localhost -c 3

if ! grep -q "pid:" events/synthetic/waking+wakeup_latency/hist; then

    fail "Failed to create combined histogram"

fi



do_reset



exit 0

tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc

0 → 100644
+50 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test inter-event histogram trigger onmatch action



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit_fail

}



if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f synthetic_events ]; then

    echo "synthetic event is not supported"

    exit_unsupported

fi



clear_synthetic_events

reset_tracer

do_reset



echo "Test create synthetic event"



echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events

if [ ! -d events/synthetic/wakeup_latency ]; then

    fail "Failed to create wakeup_latency synthetic event"

fi



echo "Test create histogram for synthetic event"

echo "Test histogram variables,simple expression support and onmatch action"



echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger

echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger

echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger

ping localhost -c 5

if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then

    fail "Failed to create onmatch action inter-event histogram"

fi



do_reset



exit 0