tools/perf/tests/shell/test_arm_callgraph_fp.sh

   1 #!/bin/sh
   2 # Check Arm64 callgraphs are complete in fp mode
   3 # SPDX-License-Identifier: GPL-2.0
   4
   5 shelldir=$(dirname "$0")
   6 # shellcheck source=lib/perf_has_symbol.sh
   7 . "${shelldir}"/lib/perf_has_symbol.sh
   8
   9 if [ "$(uname -m)" != "aarch64" ]; then
  10         exit 2
  11 fi
  12
  13 if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
  14 then
  15   echo "Skipping, no dwarf unwind support"
  16   exit 2
  17 fi
  18
  19 skip_test_missing_symbol leafloop
  20
  21 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
  22 TEST_PROGRAM="perf test -w leafloop"
  23
  24 cleanup_files()
  25 {
  26         rm -f "$PERF_DATA"
  27 }
  28
  29 trap cleanup_files EXIT TERM INT
  30
  31 # shellcheck disable=SC2086
  32 perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM
  33
  34 # Try opening the file so any immediate errors are visible in the log
  35 perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
  36
  37 # expected perf-script output if 'leaf' has been inserted correctly:
  38 #
  39 # perf
  40 #       728 leaf
  41 #       753 parent
  42 #       76c leafloop
  43 # ... remaining stack to main() ...
  44
  45 # Each frame is separated by a tab, some spaces and an address
  46 SEP="[[:space:]]+ [[:xdigit:]]+"
  47 perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \
  48         grep -E -q "perf $SEP leaf $SEP parent $SEP leafloop"