1#!/bin/bash 2# perf stat events uniquifying 3# SPDX-License-Identifier: GPL-2.0 4 5set -e 6 7err=0 8stat_output=$(mktemp /tmp/__perf_test.stat_output.XXXXX) 9 10cleanup() { 11 rm -f "${stat_output}" 12 13 trap - EXIT TERM INT 14} 15 16trap_cleanup() { 17 echo "Unexpected signal in ${FUNCNAME[1]}" 18 cleanup 19 exit 1 20} 21trap trap_cleanup EXIT TERM INT 22 23test_event_uniquifying() { 24 echo "Uniquification of PMU sysfs events test" 25 26 # Read events from perf list with and without -v. With -v the duplicate PMUs 27 # aren't deduplicated. Note, json events are listed by perf list without a 28 # PMU. 29 read -ra pmu_events <<< "$(perf list --raw pmu)" 30 read -ra pmu_v_events <<< "$(perf list -v --raw pmu)" 31 # For all non-deduplicated events. 32 for pmu_v_event in "${pmu_v_events[@]}"; do 33 # If the event matches an event in the deduplicated events then it musn't 34 # be an event with duplicate PMUs, continue the outer loop. 35 for pmu_event in "${pmu_events[@]}"; do 36 if [[ "$pmu_v_event" == "$pmu_event" ]]; then 37 continue 2 38 fi 39 done 40 # Strip the suffix from the non-deduplicated event's PMU. 41 event=$(echo "$pmu_v_event" | sed -E 's/_[0-9]+//') 42 for pmu_event in "${pmu_events[@]}"; do 43 if [[ "$event" == "$pmu_event" ]]; then 44 echo "Testing event ${event} is uniquified to ${pmu_v_event}" 45 if ! perf stat -e "$event" -A -o ${stat_output} -- true; then 46 echo "Error running perf stat for event '$event' [Skip]" 47 if [ $err = 0 ]; then 48 err=2 49 fi 50 continue 51 fi 52 # Ensure the non-deduplicated event appears in the output. 53 if ! grep -q "${pmu_v_event}" "${stat_output}"; then 54 echo "Uniquification of PMU sysfs events test [Failed]" 55 cat "${stat_output}" 56 err=1 57 fi 58 break 59 fi 60 done 61 done 62} 63 64test_event_uniquifying 65cleanup 66exit $err 67