| #!/bin/sh |
| # Miscellaneous Intel PT testing |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| set -e |
| |
| # Skip if no Intel PT |
| perf list | grep -q 'intel_pt//' || exit 2 |
| |
| skip_cnt=0 |
| ok_cnt=0 |
| err_cnt=0 |
| |
| tmpfile=`mktemp` |
| perfdatafile=`mktemp` |
| |
| can_cpu_wide() |
| { |
| perf record -o ${tmpfile} -B -N --no-bpf-event -e dummy:u -C $1 true 2>&1 >/dev/null || return 2 |
| return 0 |
| } |
| |
| test_system_wide_side_band() |
| { |
| # Need CPU 0 and CPU 1 |
| can_cpu_wide 0 || return $? |
| can_cpu_wide 1 || return $? |
| |
| # Record on CPU 0 a task running on CPU 1 |
| perf record -B -N --no-bpf-event -o ${perfdatafile} -e intel_pt//u -C 0 -- taskset --cpu-list 1 uname |
| |
| # Should get MMAP events from CPU 1 because they can be needed to decode |
| mmap_cnt=`perf script -i ${perfdatafile} --no-itrace --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l` |
| |
| if [ ${mmap_cnt} -gt 0 ] ; then |
| return 0 |
| fi |
| |
| echo "Failed to record MMAP events on CPU 1 when tracing CPU 0" |
| return 1 |
| } |
| |
| count_result() |
| { |
| if [ $1 -eq 2 ] ; then |
| skip_cnt=`expr ${skip_cnt} \+ 1` |
| return |
| fi |
| if [ $1 -eq 0 ] ; then |
| ok_cnt=`expr ${ok_cnt} \+ 1` |
| return |
| fi |
| err_cnt=`expr ${err_cnt} \+ 1` |
| } |
| |
| test_system_wide_side_band |
| |
| count_result $? |
| |
| rm -f ${tmpfile} |
| rm -f ${perfdatafile} |
| |
| if [ ${err_cnt} -gt 0 ] ; then |
| exit 1 |
| fi |
| |
| if [ ${ok_cnt} -gt 0 ] ; then |
| exit 0 |
| fi |
| |
| exit 2 |