diff options
| -rwxr-xr-x | tools/perf/tests/shell/test_intel_pt.sh | 195 |
1 files changed, 194 insertions, 1 deletions
diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh index e0bf75981b9c..4c0aabbe33bd 100755 --- a/tools/perf/tests/shell/test_intel_pt.sh +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -23,6 +23,7 @@ errfile="${temp_dir}/test-err.txt" workload="${temp_dir}/workload" awkscript="${temp_dir}/awkscript" jitdump_workload="${temp_dir}/jitdump_workload" +maxbrstack="${temp_dir}/maxbrstack.py" cleanup() { @@ -422,7 +423,7 @@ test_jitdump() # Should be no errors if [ "${decode_err_cnt}" -ne 0 ] ; then echo "Decode failed, ${decode_err_cnt} errors" - perf script -i "${perfdatafile}" --itrace=e-o-l + perf script -i "${perfdatafile}" --itrace=e-o-l --show-mmap-events | cat return 1 fi @@ -430,6 +431,189 @@ test_jitdump() return 0 } +test_packet_filter() +{ + echo "--- Test with MTC and TSC disabled ---" + # Disable MTC and TSC + perf_record_no_decode -o "${perfdatafile}" -e intel_pt/mtc=0,tsc=0/u uname + # Should not get MTC packet + mtc_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "MTC 0x") + if [ "${mtc_cnt}" -ne 0 ] ; then + echo "Failed to filter with mtc=0" + return 1 + fi + # Should not get TSC package + tsc_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "TSC 0x") + if [ "${tsc_cnt}" -ne 0 ] ; then + echo "Failed to filter with tsc=0" + return 1 + fi + echo OK + return 0 +} + +test_disable_branch() +{ + echo "--- Test with branches disabled ---" + # Disable branch + perf_record_no_decode -o "${perfdatafile}" -e intel_pt/branch=0/u uname + # Should not get branch related packets + tnt_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "TNT 0x") + tip_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "TIP 0x") + fup_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "FUP 0x") + if [ "${tnt_cnt}" -ne 0 ] || [ "${tip_cnt}" -ne 0 ] || [ "${fup_cnt}" -ne 0 ] ; then + echo "Failed to disable branches" + return 1 + fi + echo OK + return 0 +} + +test_time_cyc() +{ + echo "--- Test with/without CYC ---" + # Check if CYC is supported + cyc=$(cat /sys/bus/event_source/devices/intel_pt/caps/psb_cyc) + if [ "${cyc}" != "1" ] ; then + echo "SKIP: CYC is not supported" + return 2 + fi + # Enable CYC + perf_record_no_decode -o "${perfdatafile}" -e intel_pt/cyc/u uname + # should get CYC packets + cyc_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "CYC 0x") + if [ "${cyc_cnt}" = "0" ] ; then + echo "Failed to get CYC packet" + return 1 + fi + # Without CYC + perf_record_no_decode -o "${perfdatafile}" -e intel_pt//u uname + # Should not get CYC packets + cyc_cnt=$(perf script -i "${perfdatafile}" -D 2>/dev/null | grep -c "CYC 0x") + if [ "${cyc_cnt}" -gt 0 ] ; then + echo "Still get CYC packet without cyc" + return 1 + fi + echo OK + return 0 +} + +test_sample() +{ + echo "--- Test recording with sample mode ---" + # Check if recording with sample mode is working + if ! perf_record_no_decode -o "${perfdatafile}" --aux-sample=8192 -e '{intel_pt//u,branch-misses:u}' uname ; then + echo "perf record failed with --aux-sample" + return 1 + fi + echo OK + return 0 +} + +test_kernel_trace() +{ + echo "--- Test with kernel trace ---" + # Check if recording with kernel trace is working + can_kernel || return 2 + if ! perf_record_no_decode -o "${perfdatafile}" -e intel_pt//k -m1,128 uname ; then + echo "perf record failed with intel_pt//k" + return 1 + fi + echo OK + return 0 +} + +test_virtual_lbr() +{ + echo "--- Test virtual LBR ---" + + # Python script to determine the maximum size of branch stacks + cat << "_end_of_file_" > "${maxbrstack}" +from __future__ import print_function + +bmax = 0 + +def process_event(param_dict): + if "brstack" in param_dict: + brstack = param_dict["brstack"] + n = len(brstack) + global bmax + if n > bmax: + bmax = n + +def trace_end(): + print("max brstack", bmax) +_end_of_file_ + + # Check if virtual lbr is working + perf_record_no_bpf -o "${perfdatafile}" --aux-sample -e '{intel_pt//,cycles}:u' uname + times_val=$(perf script -i "${perfdatafile}" --itrace=L -s "${maxbrstack}" 2>/dev/null | grep "max brstack " | cut -d " " -f 3) + case "${times_val}" in + [0-9]*) ;; + *) times_val=0;; + esac + if [ "${times_val}" -lt 2 ] ; then + echo "Failed with virtual lbr" + return 1 + fi + echo OK + return 0 +} + +test_power_event() +{ + echo "--- Test power events ---" + # Check if power events are supported + power_event=$(cat /sys/bus/event_source/devices/intel_pt/caps/power_event_trace) + if [ "${power_event}" != "1" ] ; then + echo "SKIP: power_event_trace is not supported" + return 2 + fi + if ! perf_record_no_decode -o "${perfdatafile}" -a -e intel_pt/pwr_evt/u uname ; then + echo "perf record failed with pwr_evt" + return 1 + fi + echo OK + return 0 +} + +test_no_tnt() +{ + echo "--- Test with TNT packets disabled ---" + # Check if TNT disable is supported + notnt=$(cat /sys/bus/event_source/devices/intel_pt/caps/tnt_disable) + if [ "${notnt}" != "1" ] ; then + echo "SKIP: tnt_disable is not supported" + return 2 + fi + perf_record_no_decode -o "${perfdatafile}" -e intel_pt/notnt/u uname + # Should be no TNT packets + tnt_cnt=$(perf script -i "${perfdatafile}" -D | grep -c TNT) + if [ "${tnt_cnt}" -ne 0 ] ; then + echo "TNT packets still there after notnt" + return 1 + fi + echo OK + return 0 +} + +test_event_trace() +{ + echo "--- Test with event_trace ---" + # Check if event_trace is supported + event_trace=$(cat /sys/bus/event_source/devices/intel_pt/caps/event_trace) + if [ "${event_trace}" != 1 ] ; then + echo "SKIP: event_trace is not supported" + return 2 + fi + if ! perf_record_no_decode -o "${perfdatafile}" -e intel_pt/event/u uname ; then + echo "perf record failed with event trace" + return 1 + fi + echo OK + return 0 +} + count_result() { if [ "$1" -eq 2 ] ; then @@ -448,6 +632,15 @@ test_system_wide_side_band || ret=$? ; count_result $ret ; ret=0 test_per_thread "" "" || ret=$? ; count_result $ret ; ret=0 test_per_thread "k" "(incl. kernel) " || ret=$? ; count_result $ret ; ret=0 test_jitdump || ret=$? ; count_result $ret ; ret=0 +test_packet_filter || ret=$? ; count_result $ret ; ret=0 +test_disable_branch || ret=$? ; count_result $ret ; ret=0 +test_time_cyc || ret=$? ; count_result $ret ; ret=0 +test_sample || ret=$? ; count_result $ret ; ret=0 +test_kernel_trace || ret=$? ; count_result $ret ; ret=0 +test_virtual_lbr || ret=$? ; count_result $ret ; ret=0 +test_power_event || ret=$? ; count_result $ret ; ret=0 +test_no_tnt || ret=$? ; count_result $ret ; ret=0 +test_event_trace || ret=$? ; count_result $ret ; ret=0 cleanup |