32 lines
1.2 KiB
Bash
32 lines
1.2 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: event trigger - test inter-event histogram trigger trace action
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# requires: set_event synthetic_events events/sched/sched_process_fork/hist "trace(<synthetic_event>":README ping:program
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fail() { #msg
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echo $1
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exit_fail
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}
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echo "Test create synthetic event"
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echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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if [ ! -d events/synthetic/wakeup_latency ]; then
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fail "Failed to create wakeup_latency synthetic event"
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fi
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echo "Test create histogram for synthetic event using trace action"
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echo "Test histogram variables,simple expression support and trace action"
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echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
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echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).trace(wakeup_latency,$wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
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echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
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ping $LOCALHOST -c 5
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if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
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fail "Failed to create trace action inter-event histogram"
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fi
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exit 0
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