linux-zen-server/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: trace_marker trigger - test histogram trigger
# requires: set_event events/ftrace/print/trigger events/ftrace/print/hist
# flags: instance
fail() { #msg
echo $1
exit_fail
}
echo "Test histogram trace_marker trigger"
echo 'hist:keys=common_pid' > events/ftrace/print/trigger
for i in `seq 1 10` ; do echo "hello" > trace_marker; done
grep 'hitcount: *10$' events/ftrace/print/hist > /dev/null || \
fail "hist trigger did not trigger correct times on trace_marker"
exit 0