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Linux/tools/testing/selftests/fpu/run_test_fpu.sh

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  1 #!/bin/bash
  2 # SPDX-License-Identifier: GPL-2.0
  3 #
  4 # Load kernel module for FPU tests
  5 
  6 uid=$(id -u)
  7 if [ $uid -ne 0 ]; then
  8         echo "$0: Must be run as root"
  9         exit 1
 10 fi
 11 
 12 if ! which modprobe > /dev/null 2>&1; then
 13         echo "$0: You need modprobe installed"
 14         exit 4
 15 fi
 16 
 17 if ! modinfo test_fpu > /dev/null 2>&1; then
 18         echo "$0: You must have the following enabled in your kernel:"
 19         echo "CONFIG_TEST_FPU=m"
 20         exit 4
 21 fi
 22 
 23 NR_CPUS=$(getconf _NPROCESSORS_ONLN)
 24 if [ ! $NR_CPUS ]; then
 25         NR_CPUS=1
 26 fi
 27 
 28 modprobe test_fpu
 29 
 30 if [ ! -e /sys/kernel/debug/selftest_helpers/test_fpu ]; then
 31         mount -t debugfs none /sys/kernel/debug
 32 
 33         if [ ! -e /sys/kernel/debug/selftest_helpers/test_fpu ]; then
 34                 echo "$0: Error mounting debugfs"
 35                 exit 4
 36         fi
 37 fi
 38 
 39 echo "Running 1000 iterations on all CPUs... "
 40 for i in $(seq 1 1000); do
 41         for c in $(seq 1 $NR_CPUS); do
 42                 ./test_fpu &
 43         done
 44 done
 45 
 46 rmmod test_fpu

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