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Commit a7dfdbef authored by Steven Rostedt (VMware)'s avatar Steven Rostedt (VMware)
Browse files

tracing/selftest: Add test to test hist trigger between kernel event and trace_marker 



Add a test that tests a trigger that is initiated by a kernel event
(sched_waking) and compared to a write to the trace_marker.

Acked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent c349d4af

tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic-kernel.tc

0 → 100644
+68 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# description: trace_marker trigger - test histogram with synthetic event against kernel event

# flags:



do_reset() {

    reset_trigger

    echo > set_event

    echo > synthetic_events

    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 events not supported"

    exit_unsupported

fi



if [ ! -d events/ftrace/print ]; then

    echo "event trace_marker is not supported"

    exit_unsupported

fi



if [ ! -d events/sched/sched_waking ]; then

    echo "event sched_waking is not supported"

    exit_unsupported

fi



if [ ! -f events/ftrace/print/trigger ]; then

    echo "event trigger is not supported"

    exit_unsupported

fi



if [ ! -f events/ftrace/print/hist ]; then

    echo "hist trigger is not supported"

    exit_unsupported

fi



do_reset



echo "Test histogram kernel event to trace_marker latency histogram trigger"



echo 'latency u64 lat' > synthetic_events

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

echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).latency($lat)' > events/ftrace/print/trigger

echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger

sleep 1

echo "hello" > trace_marker



grep 'hitcount: *1$' events/ftrace/print/hist > /dev/null || \

    fail "hist trigger did not trigger correct times on trace_marker"



grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \

    fail "hist trigger did not trigger "



do_reset



exit 0