#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Load kernel module for FPU tests
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uid=$(id -u)
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if [ $uid -ne 0 ]; then
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echo "$0: Must be run as root"
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exit 1
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fi
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if ! which modprobe > /dev/null 2>&1; then
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echo "$0: You need modprobe installed"
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exit 4
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fi
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if ! modinfo test_fpu > /dev/null 2>&1; then
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echo "$0: You must have the following enabled in your kernel:"
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echo "CONFIG_TEST_FPU=m"
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exit 4
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fi
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NR_CPUS=$(getconf _NPROCESSORS_ONLN)
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if [ ! $NR_CPUS ]; then
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NR_CPUS=1
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fi
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modprobe test_fpu
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if [ ! -e /sys/kernel/debug/selftest_helpers/test_fpu ]; then
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mount -t debugfs none /sys/kernel/debug
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if [ ! -e /sys/kernel/debug/selftest_helpers/test_fpu ]; then
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echo "$0: Error mounting debugfs"
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exit 4
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fi
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fi
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echo "Running 1000 iterations on all CPUs... "
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for i in $(seq 1 1000); do
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for c in $(seq 1 $NR_CPUS); do
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./test_fpu &
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done
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done
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rmmod test_fpu
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