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146459fe67
Add a test case verifying the basic functionality of the hist:snapshot() action. Link: http://lkml.kernel.org/r/c0555f462cbfe56dadfec6e63e531e109bd72930.1550100284.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
44 lines
1.0 KiB
Bash
44 lines
1.0 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 snapshot action
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fail() { #msg
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echo $1
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exit_fail
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}
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if [ ! -f set_event ]; then
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echo "event tracing is not supported"
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exit_unsupported
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fi
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if [ ! -f snapshot ]; then
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echo "snapshot is not supported"
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exit_unsupported
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fi
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grep -q "onchange(var)" README || exit_unsupported # version issue
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grep -q "snapshot()" README || exit_unsupported # version issue
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echo "Test snapshot action"
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echo 1 > /sys/kernel/debug/tracing/events/sched/enable
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echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger
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ping $LOCALHOST -c 3
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nice -n 1 ping $LOCALHOST -c 3
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echo 0 > tracing_on
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if ! grep -q "changed:" events/sched/sched_waking/hist; then
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fail "Failed to create onchange action inter-event histogram"
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fi
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if ! grep -q "comm=ping" snapshot; then
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fail "Failed to create snapshot action inter-event histogram"
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fi
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exit 0
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