tools/perf/tests/shell/test_data_symbol.sh

   1 #!/bin/bash
   2 # Test data symbol (exclusive)
   3
   4 # SPDX-License-Identifier: GPL-2.0
   5 # Leo Yan <leo.yan@linaro.org>, 2022
   6
   7 shelldir=$(dirname "$0")
   8 # shellcheck source=lib/waiting.sh
   9 . "${shelldir}"/lib/waiting.sh
  10
  11 # shellcheck source=lib/perf_has_symbol.sh
  12 . "${shelldir}"/lib/perf_has_symbol.sh
  13
  14 skip_if_no_mem_event() {
  15         perf mem record -e list 2>&1 | grep -E -q 'available' && return 0
  16         return 2
  17 }
  18
  19 skip_if_no_mem_event || exit 2
  20
  21 skip_test_missing_symbol buf1
  22
  23 TEST_PROGRAM="perf test -w datasym"
  24 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
  25 ERR_FILE=$(mktemp /tmp/__perf_test.stderr.XXXXX)
  26
  27 check_result() {
  28         # The memory report format is as below:
  29         #    99.92%  ...  [.] buf1+0x38
  30         result=$(perf mem report -i ${PERF_DATA} -s symbol_daddr -q 2>&1 |
  31                  awk '/buf1/ { print $4 }')
  32
  33         # Testing is failed if has no any sample for "buf1"
  34         [ -z "$result" ] && return 1
  35
  36         while IFS= read -r line; do
  37                 # The "data1" and "data2" fields in structure "buf1" have
  38                 # offset "0x0" and "0x38", returns failure if detect any
  39                 # other offset value.
  40                 if [ "$line" != "buf1+0x0" ] && [ "$line" != "buf1+0x38" ]; then
  41                         return 1
  42                 fi
  43         done <<< "$result"
  44
  45         return 0
  46 }
  47
  48 cleanup_files()
  49 {
  50         echo "Cleaning up files..."
  51         rm -f ${PERF_DATA}
  52 }
  53
  54 trap cleanup_files exit term int
  55
  56 echo "Recording workload..."
  57
  58 # perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't support
  59 # user/kernel filtering and per-process monitoring, spin program on
  60 # specific CPU and test in per-CPU mode.
  61 is_amd=$(grep -E -c 'vendor_id.*AuthenticAMD' /proc/cpuinfo)
  62 if (($is_amd >= 1)); then
  63         perf mem record -vvv -o ${PERF_DATA} -C 0 -- taskset -c 0 $TEST_PROGRAM 2>"${ERR_FILE}" &
  64 else
  65         perf mem record -vvv --all-user -o ${PERF_DATA} -- $TEST_PROGRAM 2>"${ERR_FILE}" &
  66 fi
  67
  68 PERFPID=$!
  69
  70 wait_for_perf_to_start ${PERFPID} "${ERR_FILE}"
  71
  72 sleep 1
  73
  74 kill $PERFPID
  75 wait $PERFPID
  76
  77 check_result
  78 exit $?