| 1 | |
| 2 | |
| 3 | |
| 4 |
|
| 5 | set -e
|
| 6 |
|
| 7 | err=0
|
| 8 | perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
|
| 9 |
|
| 10 | cleanup()
|
| 11 | {
|
| 12 | rm -rf ${perfdata}
|
| 13 | trap - EXIT TERM INT
|
| 14 | }
|
| 15 |
|
| 16 | trap_cleanup()
|
| 17 | {
|
| 18 | cleanup
|
| 19 | exit 1
|
| 20 | }
|
| 21 | trap trap_cleanup EXIT TERM INT
|
| 22 |
|
| 23 | can_cpu_wide()
|
| 24 | {
|
| 25 | if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true > /dev/null 2>&1
|
| 26 | then
|
| 27 | echo "record sideband test [Skipped cannot record cpu$1]"
|
| 28 | err=2
|
| 29 | fi
|
| 30 |
|
| 31 | rm -f ${perfdata}
|
| 32 | return $err
|
| 33 | }
|
| 34 |
|
| 35 | test_system_wide_tracking()
|
| 36 | {
|
| 37 | |
| 38 | can_cpu_wide 0 || return 0
|
| 39 | can_cpu_wide 1 || return 0
|
| 40 |
|
| 41 | |
| 42 | perf record -BN --no-bpf-event -o ${perfdata} -C 0 -- taskset --cpu-list 1 true
|
| 43 |
|
| 44 | |
| 45 | mmap_cnt=`perf script -i ${perfdata} --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l`
|
| 46 |
|
| 47 | if [ ${mmap_cnt} -gt 0 ] ; then
|
| 48 | return 0
|
| 49 | fi
|
| 50 |
|
| 51 | echo "Failed to record MMAP events on CPU 1 when tracing CPU 0"
|
| 52 | return 1
|
| 53 | }
|
| 54 |
|
| 55 | test_system_wide_tracking
|
| 56 |
|
| 57 | cleanup
|
| 58 | exit $err
|