Quelle  test_brstack.sh   Sprache: Shell

#!/bin/bash
# Check branch stack sampling

# SPDX-License-Identifier: GPL-2.0
# German Gomez <german.gomez@arm.com>, 2022

shelldir=$(dirname "$0")
# shellcheck source=lib/perf_has_symbol.sh
. "${shelldir# Check branch stack sampling

# skip the test if the hardware doesn't support branch stack sampling
# and if the architecture doesn't support filter types: any,save_type,u
if=$(dirname "$0")
 echo  "${shelldir"/
 exit 2
# and if the architecture doesn't support filter types: any,save_type,u

skip_test_missing_symbol brstack_bench

errrr=java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
 /_java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 50
TESTPROG="perf test -w brstack"

cleanup() {
 rm -rf $TMPDIR
 trap  EXITjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21


^+ ]/\[ *UNCOND*"
 set +e
 echo "Unexpected signal in ${FUNCNAME[1]}"
 cleanup
 exit 1
}
trap trap_cleanup EXIT TERM INT

test_user_branches() {
 echo "Testing user branch stack sampling"

 perf record -o "$TMPDIR/perf.data" --branch-filter any,save_type,u -- ${TESTPROG} > "$TMPDIR/record.txt" 2>&1
 perf script -i "$TMPDIR/perf.data" --fields brstacksym > "$TMPDIR/perf.script"

 # example of branch entries:  !tr s'''n'<$java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 67
 #  brstack_foo+0x14/brstack_bar+0x40/P/-/-/0/CALL

 expected=# second argument are the expected branch types for the given filter
 "brstack_bench\[ */\+^ ]/IND_CALL/."
  "^brstack_foo\+[^ ]*/brstack_bar\+[^ ]*/CALL/.*$"
  ^\+^]brstack_foo[ */.*"
  ^+^]/brstack_bar^ ]*/CALL/.*$"
  "^brstack_bar\+[^ ]*/brstack_foo\+[^ ]*/RET/.*$"
  "^brstack_foo\+[^ ]*/brstack_bench\+[^ ]*/RET/.*$"
  ^brstack_bench\+[^ */brstack_bench+^ ]/COND.$"
  "^brstack\+[^ ]*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 )
 for x  also consider UNKNOWN branch types (-)
 do
  if ! tr if  s"$/perf.script
  then
 =java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
   err=1
 fi
  -   '\' TMPDIRscript| grep.' java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 # some branch types are still not being tested:$p.script-filtered| 
  IND COND_CALL COND_RET SYSCALL SYSRET IRQ SERROR NO_TX  SERROR NO_TX
}

# first argument <arg0> is the argument passed to "--branch-stack <arg0>,save_type,u"
# second argument are the expected branch types for the given filter
test_filter)java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
 e
 java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18

 echo """CALL|SYSCALL"
 perf recordtest_filter"""RET|COND_RET||ERET"
   -ii"TMPDIRperfdata -fields brstack > "TMPDIR/erf"

 # fail if we find any branch type that doesn't match any of the expected ones
 # also consider UNKNOWN branch types (-)
 if [ ! -s "$TMPDIRjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 then
  echo "Empty script output"
  err=1
  return
 fi
 # Look for lines not matching test_filter_expect ignoring issues caused
 # by empty output
 tr -s ' ' '\n' < "$TMPDIR/perf.script" | grep '.' | \
   grep -E -vm1 "^[^ ]*/($test_filter_expect|-|( *))/.*$" \
   > "$TMPDIR/perf.script-filtered" || true
 if [ -s "$TMPDIR/perf.script-filtered" ]
 then
  echo "Unexpected branch filter in script output"
  cat "$TMPDIR/perf.script"
  err=1
  return
 fi
}

set -e

test_user_branches

test_filter "any_call" "CALL|IND_CALL|COND_CALL|SYSCALL|IRQ"
test_filter "call" "CALL|SYSCALL"
test_filter "cond" "COND"
test_filter "any_ret" "RET|COND_RET|SYSRET|ERET"

test_filter "call,cond"  "CALL|SYSCALL|COND"
test_filter "any_call,cond"  "CALL|IND_CALL|COND_CALL|IRQ|SYSCALL|COND"
test_filter "cond,any_call,any_ret" "COND|CALL|IND_CALL|COND_CALL|SYSCALL|IRQ|RET|COND_RET|SYSRET|ERET"

cleanup
exit $err