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Commit 9c749a1f authored by Tom Zanussi's avatar Tom Zanussi Committed by Steven Rostedt (VMware)
Browse files

tracing: Add alternative synthetic event trace action test case 

Add a test case for the alternative trace(<synthetic_event, params)
synthetic event generation syntax.

Link: http://lkml.kernel.org/r/0616d18423ab1dfdbf333bce9c92ac4fa0779207.1550100284.git.tom.zanussi@linux.intel.com



Acked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarTom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 6f6eaa1e

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

0 → 100644
+42 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

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



fail() { #msg

    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



grep -q "trace(<synthetic_event>" README || exit_unsupported # version issue



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 using trace action"

echo "Test histogram variables,simple expression support and trace 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-$ts0:onmatch(sched.sched_wakeup).trace(wakeup_latency,$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 trace action inter-event histogram"

fi



exit 0