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record.sh
#!/bin/sh # perf record tests # SPDX-License-Identifier: GPL-2.0 set -e shelldir=$(dirname "$0") # shellcheck source=lib/waiting.sh . "${shelldir}"/lib/waiting.sh # shellcheck source=lib/perf_has_symbol.sh . "${shelldir}"/lib/perf_has_symbol.sh testsym="test_loop" skip_test_missing_symbol ${testsym} err=0 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) testprog="perf test -w thloop" cpu_pmu_dir="/sys/bus/event_source/devices/cpu*" br_cntr_file="/caps/branch_counter_nr" br_cntr_output="branch stack counters" cleanup() { rm -rf "${perfdata}" rm -rf "${perfdata}".old trap - EXIT TERM INT } trap_cleanup() { cleanup exit 1 } trap trap_cleanup EXIT TERM INT test_per_thread() { echo "Basic --per-thread mode test" if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null then echo "Per-thread record [Skipped event not supported]" return fi if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null then echo "Per-thread record [Failed record]" err=1 return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "Per-thread record [Failed missing output]" err=1 return fi # run the test program in background (for 30 seconds) ${testprog} 30 & TESTPID=$! rm -f "${perfdata}" wait_for_threads ${TESTPID} 2 perf record -p "${TESTPID}" --per-thread -o "${perfdata}" sleep 1 2> /dev/null kill ${TESTPID} if [ ! -e "${perfdata}" ] then echo "Per-thread record [Failed record -p]" err=1 return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "Per-thread record [Failed -p missing output]" err=1 return fi echo "Basic --per-thread mode test [Success]" } test_register_capture() { echo "Register capture test" if ! perf list | grep -q 'br_inst_retired.near_call' then echo "Register capture test [Skipped missing event]" return fi if ! perf record --intr-regs=\? 2>&1 | grep -q 'available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15' then echo "Register capture test [Skipped missing registers]" return fi if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call \ -c 1000 --per-thread ${testprog} 2> /dev/null \ | perf script -F ip,sym,iregs -i - 2> /dev/null \ | grep -q "DI:" then echo "Register capture test [Failed missing output]" err=1 return fi echo "Register capture test [Success]" } test_system_wide() { echo "Basic --system-wide mode test" if ! perf record -aB --synth=no -o "${perfdata}" ${testprog} 2> /dev/null then echo "System-wide record [Skipped not supported]" return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "System-wide record [Failed missing output]" err=1 return fi if ! perf record -aB --synth=no -e cpu-clock,cs --threads=cpu \ -o "${perfdata}" ${testprog} 2> /dev/null then echo "System-wide record [Failed record --threads option]" err=1 return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "System-wide record [Failed --threads missing output]" err=1 return fi echo "Basic --system-wide mode test [Success]" } test_workload() { echo "Basic target workload test" if ! perf record -o "${perfdata}" ${testprog} 2> /dev/null then echo "Workload record [Failed record]" err=1 return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "Workload record [Failed missing output]" err=1 return fi if ! perf record -e cpu-clock,cs --threads=package \ -o "${perfdata}" ${testprog} 2> /dev/null then echo "Workload record [Failed record --threads option]" err=1 return fi if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" then echo "Workload record [Failed --threads missing output]" err=1 return fi echo "Basic target workload test [Success]" } test_branch_counter() { echo "Basic branch counter test" # Check if the branch counter feature is supported for dir in $cpu_pmu_dir do if [ ! -e "$dir$br_cntr_file" ] then echo "branch counter feature not supported on all core PMUs ($dir) [Skipped]" return fi done if ! perf record -o "${perfdata}" -j any,counter ${testprog} 2> /dev/null then echo "Basic branch counter test [Failed record]" err=1 return fi if ! perf report -i "${perfdata}" -D -q | grep -q "$br_cntr_output" then echo "Basic branch record test [Failed missing output]" err=1 return fi echo "Basic branch counter test [Success]" } test_per_thread test_register_capture test_system_wide test_workload test_branch_counter cleanup exit $err
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