59 lines · bash
1#!/bin/sh2# perf record sideband tests3# SPDX-License-Identifier: GPL-2.04 5set -e6 7err=08perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)9 10cleanup()11{12 rm -rf ${perfdata}13 trap - EXIT TERM INT14}15 16trap_cleanup()17{18 cleanup19 exit 120}21trap trap_cleanup EXIT TERM INT22 23can_cpu_wide()24{25 if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true > /dev/null 2>&126 then27 echo "record sideband test [Skipped cannot record cpu$1]"28 err=229 fi30 31 rm -f ${perfdata}32 return $err33}34 35test_system_wide_tracking()36{37 # Need CPU 0 and CPU 138 can_cpu_wide 0 || return 039 can_cpu_wide 1 || return 040 41 # Record on CPU 0 a task running on CPU 142 perf record -BN --no-bpf-event -o ${perfdata} -C 0 -- taskset --cpu-list 1 true43 44 # Should get MMAP events from CPU 145 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 ] ; then48 return 049 fi50 51 echo "Failed to record MMAP events on CPU 1 when tracing CPU 0"52 return 153}54 55test_system_wide_tracking56 57cleanup58exit $err59