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|
#!/bin/sh
# perf record sideband tests
# SPDX-License-Identifier: GPL-2.0
set -e
err=0
perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
cleanup()
{
rm -rf ${perfdata}
trap - EXIT TERM INT
}
trap_cleanup()
{
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
can_cpu_wide()
{
if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true > /dev/null 2>&1
then
echo "record sideband test [Skipped cannot record cpu$1]"
err=2
fi
rm -f ${perfdata}
return $err
}
test_system_wide_tracking()
{
# Need CPU 0 and CPU 1
can_cpu_wide 0 || return 0
can_cpu_wide 1 || return 0
# Record on CPU 0 a task running on CPU 1
perf record -BN --no-bpf-event -o ${perfdata} -C 0 -- taskset --cpu-list 1 true
# Should get MMAP events from CPU 1
mmap_cnt=`perf script -i ${perfdata} --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
}
test_system_wide_tracking
cleanup
exit $err
|
