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|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# stat-cpi python test
set -e
shelldir=$(dirname "$0")
# shellcheck source=lib/setup_python.sh
. "${shelldir}"/lib/setup_python.sh
# If we don't have the perf python module, we can't test
if ! "$PYTHON" -c 'import perf' > /dev/null 2>&1; then
echo "Skipping test, perf python module not found"
return 2 2>/dev/null || exit 2
fi
script_dir="$(dirname "$0")/../../python"
script_path="${script_dir}/stat-cpi.py"
if [ ! -f "$script_path" ]; then
echo "Skipping test, stat-cpi.py not found at $script_path"
return 2 2>/dev/null || exit 2
fi
err=0
ran=0
temp_data=""
temp_out=""
cleanup() {
[ -n "${pid}" ] && kill "$pid" 2>/dev/null || true
[ -n "${workload_pid}" ] && kill "$workload_pid" 2>/dev/null || true
rm -f "${temp_data}" "${temp_out}"
trap - exit term int
}
trap_cleanup() {
cleanup
exit 1
}
trap trap_cleanup exit term int
temp_data=$(mktemp /tmp/perf.data.XXXXXX)
temp_out=$(mktemp /tmp/perf.out.XXXXXX)
test_live_mode() {
echo "Testing stat-cpi.py live mode..."
if ! perf stat -e cycles,instructions -- sleep 0.1 2>/dev/null && \
! perf stat -e cycles:u,instructions:u -- sleep 0.1 2>/dev/null; then
echo "perf stat failed (permissions?), skipping live mode test."
return 0
fi
perf test -w noploop 60 &
workload_pid=$!
if ! perf stat -e cycles,instructions -p "$workload_pid" -- sleep 0.05 2>/dev/null && \
! perf stat -e cycles:u,instructions:u -p "$workload_pid" -- sleep 0.05 2>/dev/null; then
kill "$workload_pid" 2>/dev/null || true
workload_pid=""
echo "perf stat -p failed (ptrace_scope?), skipping live mode test."
return 0
fi
ran=1
# Run live mode in the background, wait until at least one interval is
# printed, then interrupt.
perf script stat-cpi -I 0.1 -p "$workload_pid" > "${temp_out}" &
pid=$!
for _ in $(seq 1 50); do
if grep -q "cpi" "${temp_out}"; then
break
fi
sleep 0.1
done
kill -INT "$pid" 2>/dev/null || true
set +e
wait "$pid"
res=$?
set -e
pid=""
kill "$workload_pid" 2>/dev/null || true
workload_pid=""
if [ $res -ne 0 ] && [ $res -ne 130 ] && [ $res -ne 143 ]; then
echo "Live mode failed or crashed"
err=1
elif ! grep -q "cpi" "${temp_out}"; then
echo "Live mode produced no cpi output"
err=1
else
echo "Live mode test passed."
fi
}
test_file_mode() {
echo "Testing stat-cpi.py file mode..."
# Generate some stat events - perf stat -I represents interval reporting
if ! perf stat -e cycles,instructions -I 100 record -o "${temp_data}" \
-- sleep 0.5 2>/dev/null && \
! perf stat -e cycles:u,instructions:u -I 100 record -o "${temp_data}" \
-- sleep 0.5 2>/dev/null; then
echo "perf stat failed (permissions?), skipping file mode test."
return
fi
ran=1
out=$(perf script stat-cpi -i "${temp_data}")
if ! echo "$out" | grep -q "cpi"; then
echo "File mode test failed."
err=1
else
echo "File mode test passed."
fi
}
test_live_mode
test_file_mode
cleanup
if [ $ran -eq 0 ]; then
exit 2
fi
exit $err
|
