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|
#!/bin/bash
# perf sched tests
# SPDX-License-Identifier: GPL-2.0
set -e
if [ "$(id -u)" != 0 ]; then
echo "[Skip] No root permission"
exit 2
fi
err=0
perfdata=$(mktemp /tmp/__perf_test_sched.perf.data.XXXXX)
PID1=0
PID2=0
cleanup() {
rm -f "${perfdata}"
rm -f "${perfdata}".old
trap - EXIT TERM INT
}
trap_cleanup() {
echo "Unexpected signal in ${FUNCNAME[1]}"
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
start_noploops() {
# Start two noploop workloads on CPU0 to trigger scheduling.
perf test -w noploop 10 &
PID1=$!
taskset -pc 0 $PID1
perf test -w noploop 10 &
PID2=$!
taskset -pc 0 $PID2
if ! grep -q 'Cpus_allowed_list:\s*0$' "/proc/$PID1/status"
then
echo "Sched [Error taskset did not work for the 1st noploop ($PID1)]"
grep Cpus_allowed /proc/$PID1/status
err=1
fi
if ! grep -q 'Cpus_allowed_list:\s*0$' "/proc/$PID2/status"
then
echo "Sched [Error taskset did not work for the 2nd noploop ($PID2)]"
grep Cpus_allowed /proc/$PID2/status
err=1
fi
}
cleanup_noploops() {
kill "$PID1" "$PID2" || true
}
test_sched_record() {
echo "Sched record"
start_noploops
perf sched record --no-inherit -o "${perfdata}" sleep 1
cleanup_noploops
}
test_sched_latency() {
echo "Sched latency"
if ! perf sched latency -i "${perfdata}" | grep -q perf-noploop
then
echo "Sched latency [Failed missing output]"
err=1
fi
}
test_sched_latency_histogram() {
echo "Sched latency histogram"
if ! perf sched latency -H -i "${perfdata}" | grep -q "Latency Distribution Histogram"
then
echo "Sched latency histogram [Failed missing log histogram]"
err=1
fi
if ! perf sched latency --histogram --hist-mode linear -i "${perfdata}" | grep -q "Latency Distribution Histogram"
then
echo "Sched latency histogram [Failed missing linear histogram]"
err=1
fi
}
test_sched_latency_time() {
echo "Sched latency time filter"
if ! perf sched latency --time 0, -i "${perfdata}" | grep -q perf-noploop
then
echo "Sched latency time filter [Failed missing output]"
err=1
fi
}
test_sched_script() {
echo "Sched script"
if ! perf sched script -i "${perfdata}" | grep -q perf-noploop
then
echo "Sched script [Failed missing output]"
err=1
fi
}
test_sched_map() {
echo "Sched map"
if ! perf sched map -i "${perfdata}" | grep -q perf-noploop
then
echo "Sched map [Failed missing output]"
err=1
fi
}
test_sched_timehist() {
echo "Sched timehist"
if ! perf sched timehist -i "${perfdata}" | grep -q perf-noploop
then
echo "Sched timehist [Failed missing output]"
err=1
fi
}
test_sched_record
test_sched_latency
test_sched_latency_histogram
test_sched_latency_time
test_sched_script
test_sched_map
test_sched_timehist
cleanup
exit $err
|
