# SPDX-License-Identifier: GPL-2.0 PERF_RECORD_LOGS=() perf_record_with_retry() {  local perfdata="$1"  local check_cmd="$2"  local testprog_base="$3"  shift 3   local logfile  logfile=$(mktemp /tmp/__perf_record_retry.XXXXXX)  PERF_RECORD_LOGS+=("$logfile")   # Save the e flag state and disable it  local save_e  if [[ $- == *e* ]]; then    save_e="set -e"  else    save_e="set +e"  fi  set +e   local duration  local first_run=true  local ret=1  local cmd_prefix="perf record"  if [ -n "${PERF_RECORD_CMD}" ]; then    cmd_prefix="${PERF_RECORD_CMD}"  fi   for duration in 0.01 0.1 0.3 1.0 2.0; do    rm -f "${perfdata}".old    ${cmd_prefix} "$@" -o "${perfdata}" ${testprog_base} ${duration} > "$logfile" 2>&1    local record_exit=$?     if [ "$first_run" = true ] && [ $record_exit -ne 0 ]; then      ret=2      break    fi    first_run=false     if [ -e "${perfdata}" ] && eval "${check_cmd}"; then      ret=0      break    fi  done   eval "$save_e"  return $ret} perf_record_cleanup() {  for logfile in "${PERF_RECORD_LOGS[@]}"; do    rm -f "$logfile"  done  PERF_RECORD_LOGS=()}