trigger/inter-event/trigger-field-variable-support.tc

0001 #!/bin/sh
0002 # SPDX-License-Identifier: GPL-2.0
0003 # description: event trigger - test field variable support
0004 # requires: set_event synthetic_events events/sched/sched_process_fork/hist
0005
0006 fail() { #msg
0007     echo $1
0008     exit_fail
0009 }
0010
0011 echo "Test field variable support"
0012
0013 echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
0014 echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
0015 echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$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
0016 echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
0017
0018 ping $LOCALHOST -c 3
0019 if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
0020     fail "Failed to create inter-event histogram"
0021 fi
0022
0023 if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
0024     fail "Failed to create histogram with field variable"
0025 fi
0026
0027 echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$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
0028
0029 if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
0030     fail "Failed to remove histogram with field variable"
0031 fi
0032
0033 exit 0