github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-28 10:09:10 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

selftests/mm: save and restore nr_hugepages value

Browse Source 
Save and restore nr_hugepages before changing it during the test.  A test
should not change system wide settings.

Link: https://lkml.kernel.org/r/20240125154608.720072-4-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muhammad Usama Anjum 2024-01-25 20:46:06 +05:00 committed by Andrew Morton
parent 20a2191c2e
commit 7d695b1c36
2 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/testing/selftests/mm/charge_reserved_hugetlb.sh
View File

@ -11,6 +11,8 @@ if [[ $(id -u) -ne 0 ]]; then
exit $ksft_skip exit $ksft_skip
fi fi
nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages)
fault_limit_file=limit_in_bytes fault_limit_file=limit_in_bytes
reservation_limit_file=rsvd.limit_in_bytes reservation_limit_file=rsvd.limit_in_bytes
fault_usage_file=usage_in_bytes fault_usage_file=usage_in_bytes
@ -582,3 +584,5 @@ if [[ $do_umount ]]; then
umount $cgroup_path umount $cgroup_path
rmdir $cgroup_path rmdir $cgroup_path
fi fi
echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages

3
tools/testing/selftests/mm/hugetlb_reparenting_test.sh
View File

@ -11,6 +11,7 @@ if [[ $(id -u) -ne 0 ]]; then
exit $ksft_skip exit $ksft_skip
fi fi
nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages)
usage_file=usage_in_bytes usage_file=usage_in_bytes
if [[ "$1" == "-cgroup-v2" ]]; then if [[ "$1" == "-cgroup-v2" ]]; then
@ -252,3 +253,5 @@ if [[ $do_umount ]]; then
umount $CGROUP_ROOT umount $CGROUP_ROOT
rm -rf $CGROUP_ROOT rm -rf $CGROUP_ROOT
fi fi
echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages