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linux/tools/testing/selftests/vm/run_vmtests.sh
Yosry Ahmed f77a286de4 mm, hugepages: make memory size variable in hugepage-mremap selftest 
The hugetlb vma mremap() test currently maps 1GB of memory to trigger
pmd sharing and make sure that 'unshare' path in mremap code works.  The
test originally only mapped 10MB of memory (as specified by the header
comment) but was later modified to 1GB to tackle this case.

However, not all machines will have 1GB of memory to spare for this
test.  Adding a mapping size arg will allow run_vmtest.sh to pass an
adequate mapping size, while allowing users to run the test
independently with arbitrary size mappings.

Link: https://lkml.kernel.org/r/20211124203805.3700355-1-yosryahmed@google.com
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-15 16:30:29 +02:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#please run as root
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
mnt=./huge
exitcode=0
#get huge pagesize and freepages from /proc/meminfo
while read name size unit; do
if [ "$name" = "HugePages_Free:" ]; then
freepgs=$size
fi
if [ "$name" = "Hugepagesize:" ]; then
hpgsize_KB=$size
fi
done < /proc/meminfo
# Simple hugetlbfs tests have a hardcoded minimum requirement of
# huge pages totaling 256MB (262144KB) in size. The userfaultfd
# hugetlb test requires a minimum of 2 * nr_cpus huge pages. Take
# both of these requirements into account and attempt to increase
# number of huge pages available.
nr_cpus=$(nproc)
hpgsize_MB=$((hpgsize_KB / 1024))
half_ufd_size_MB=$((((nr_cpus * hpgsize_MB + 127) / 128) * 128))
needmem_KB=$((half_ufd_size_MB * 2 * 1024))
#set proper nr_hugepages
if [ -n "$freepgs" ] && [ -n "$hpgsize_KB" ]; then
nr_hugepgs=`cat /proc/sys/vm/nr_hugepages`
needpgs=$((needmem_KB / hpgsize_KB))
tries=2
while [ $tries -gt 0 ] && [ $freepgs -lt $needpgs ]; do
lackpgs=$(( $needpgs - $freepgs ))
echo 3 > /proc/sys/vm/drop_caches
echo $(( $lackpgs + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
if [ $? -ne 0 ]; then
echo "Please run this test as root"
exit $ksft_skip
fi
while read name size unit; do
if [ "$name" = "HugePages_Free:" ]; then
freepgs=$size
fi
done < /proc/meminfo
tries=$((tries - 1))
done
if [ $freepgs -lt $needpgs ]; then
printf "Not enough huge pages available (%d < %d)\n" \
$freepgs $needpgs
exit 1
fi
else
echo "no hugetlbfs support in kernel?"
exit 1
fi
#filter 64bit architectures
ARCH64STR="arm64 ia64 mips64 parisc64 ppc64 ppc64le riscv64 s390x sh64 sparc64 x86_64"
if [ -z $ARCH ]; then
ARCH=`uname -m 2>/dev/null | sed -e 's/aarch64.*/arm64/'`
fi
VADDR64=0
echo "$ARCH64STR" | grep $ARCH && VADDR64=1
mkdir $mnt
mount -t hugetlbfs none $mnt
echo "---------------------"
echo "running hugepage-mmap"
echo "---------------------"
./hugepage-mmap
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
shmmax=`cat /proc/sys/kernel/shmmax`
shmall=`cat /proc/sys/kernel/shmall`
echo 268435456 > /proc/sys/kernel/shmmax
echo 4194304 > /proc/sys/kernel/shmall
echo "--------------------"
echo "running hugepage-shm"
echo "--------------------"
./hugepage-shm
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo $shmmax > /proc/sys/kernel/shmmax
echo $shmall > /proc/sys/kernel/shmall
echo "-------------------"
echo "running map_hugetlb"
echo "-------------------"
./map_hugetlb
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-----------------------"
echo "running hugepage-mremap"
echo "-----------------------"
./hugepage-mremap 256
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "NOTE: The above hugetlb tests provide minimal coverage. Use"
echo " https://github.com/libhugetlbfs/libhugetlbfs.git for"
echo " hugetlb regression testing."
echo "---------------------------"
echo "running map_fixed_noreplace"
echo "---------------------------"
./map_fixed_noreplace
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "------------------------------------------------------"
echo "running: gup_test -u # get_user_pages_fast() benchmark"
echo "------------------------------------------------------"
./gup_test -u
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "------------------------------------------------------"
echo "running: gup_test -a # pin_user_pages_fast() benchmark"
echo "------------------------------------------------------"
./gup_test -a
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "------------------------------------------------------------"
echo "# Dump pages 0, 19, and 4096, using pin_user_pages:"
echo "running: gup_test -ct -F 0x1 0 19 0x1000 # dump_page() test"
echo "------------------------------------------------------------"
./gup_test -ct -F 0x1 0 19 0x1000
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-------------------"
echo "running userfaultfd"
echo "-------------------"
./userfaultfd anon 20 16
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "---------------------------"
echo "running userfaultfd_hugetlb"
echo "---------------------------"
# Test requires source and destination huge pages. Size of source
# (half_ufd_size_MB) is passed as argument to test.
./userfaultfd hugetlb $half_ufd_size_MB 32 $mnt/ufd_test_file
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
rm -f $mnt/ufd_test_file
echo "-------------------------"
echo "running userfaultfd_shmem"
echo "-------------------------"
./userfaultfd shmem 20 16
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
#cleanup
umount $mnt
rm -rf $mnt
echo $nr_hugepgs > /proc/sys/vm/nr_hugepages
echo "-----------------------"
echo "running compaction_test"
echo "-----------------------"
./compaction_test
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "----------------------"
echo "running on-fault-limit"
echo "----------------------"
sudo -u nobody ./on-fault-limit
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "--------------------"
echo "running map_populate"
echo "--------------------"
./map_populate
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-------------------------"
echo "running mlock-random-test"
echo "-------------------------"
./mlock-random-test
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "--------------------"
echo "running mlock2-tests"
echo "--------------------"
./mlock2-tests
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-------------------"
echo "running mremap_test"
echo "-------------------"
./mremap_test
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-----------------"
echo "running thuge-gen"
echo "-----------------"
./thuge-gen
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
if [ $VADDR64 -ne 0 ]; then
echo "-----------------------------"
echo "running virtual_address_range"
echo "-----------------------------"
./virtual_address_range
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
echo "-----------------------------"
echo "running virtual address 128TB switch test"
echo "-----------------------------"
./va_128TBswitch
if [ $? -ne 0 ]; then
echo "[FAIL]"
exitcode=1
else
echo "[PASS]"
fi
fi # VADDR64
echo "------------------------------------"
echo "running vmalloc stability smoke test"
echo "------------------------------------"
./test_vmalloc.sh smoke
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "------------------------------------"
echo "running MREMAP_DONTUNMAP smoke test"
echo "------------------------------------"
./mremap_dontunmap
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "running HMM smoke test"
echo "------------------------------------"
./test_hmm.sh smoke
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "--------------------------------------------------------"
echo "running MADV_POPULATE_READ and MADV_POPULATE_WRITE tests"
echo "--------------------------------------------------------"
./madv_populate
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "running memfd_secret test"
echo "------------------------------------"
./memfd_secret
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "-------------------------------------------------------"
echo "running KSM MADV_MERGEABLE test with 10 identical pages"
echo "-------------------------------------------------------"
./ksm_tests -M -p 10
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "------------------------"
echo "running KSM unmerge test"
echo "------------------------"
./ksm_tests -U
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "----------------------------------------------------------"
echo "running KSM test with 10 zero pages and use_zero_pages = 0"
echo "----------------------------------------------------------"
./ksm_tests -Z -p 10 -z 0
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "----------------------------------------------------------"
echo "running KSM test with 10 zero pages and use_zero_pages = 1"
echo "----------------------------------------------------------"
./ksm_tests -Z -p 10 -z 1
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "-------------------------------------------------------------"
echo "running KSM test with 2 NUMA nodes and merge_across_nodes = 1"
echo "-------------------------------------------------------------"
./ksm_tests -N -m 1
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
echo "-------------------------------------------------------------"
echo "running KSM test with 2 NUMA nodes and merge_across_nodes = 0"
echo "-------------------------------------------------------------"
./ksm_tests -N -m 0
ret_val=$?
if [ $ret_val -eq 0 ]; then
echo "[PASS]"
elif [ $ret_val -eq $ksft_skip ]; then
echo "[SKIP]"
exitcode=$ksft_skip
else
echo "[FAIL]"
exitcode=1
fi
exit $exitcode
exit $exitcode
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