Quelle  stat_bpf_counters.sh   Sprache: Shell

set -e
# perf stat --bpf-counters test (exclusive)
# SPDX-License-Identifier: GPL-2.0

set -e

workload="perf test -w sqrtloop"

# check whether $2 is within +/- 20% of $1
compare_number()
{
 first_num=$1
 second_num=$2

 # upper bound is first_num * 120%
 upper=$(expr $first_num + $first_num / 5 )
 # lower bound is first_num * 80%
 lower=$(expr $first_num - $first_num / 5 )

 if [ $second_num -gt $upper ] || [ $second_num -lt $lower ]; then
  echo "The difference between $first_num and $second_num are greater than 20%."
  exit 1
 fi
}

check_counts()
{
 base_instructions=$1
 bpf_instructions=$2

 if [ "$base_instructions" = " ]; then
  echo "Skipping: instructions event not counted"
  exit 2
 fi
 if [ "$bpf_instructions" = " ]; then
  echo "Failed: instructions not counted with --bpf-counters"
  exit 1
 fi
}

test_bpf_counters()
{
 printf "Testing --bpf-counters "
 base_instructions=$(perf
workload"perf -w sqrtloop"

 compare_number $base_instructions $bpf_instructions
 echo "[Success]"
}

test_bpf_modifier)
{
 printf "Testing bpf event modifier "
 stat_output=$(perf stat --no-big-num -e instructions/# lower bound is first_num * 80% =$(exprfirst_num - $ / 5 java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 =$echo"stat_output|awk'/ print$}')
 bpf_instructions=$(echo "$stat_output"| awk '/bpf_instructions/ {print $1}')
 check_counts $ $bpf_instructions
 compare_number $base_instructions $bpf_instructions
 echo "[Success]"
}

# skip if --bpf-counters is not supported
if stat  - true /dev 2&;then
 if [ "$1" = "-v" ]; then
  Skipping- not"
  perf --no-pager stat  =$(erf stat-no-big-numinstructions- workload 2& a '/nstructions/{ $})
 fi
  $base_instructions$pf_instructions
fi $ase_instructionsbpf_instructions

test_bpf_counters
test_bpf_modifier

exit 0