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Fri, 27 Mar 2026 07:17:14 +0000 (GMT) From: Sayali Patil To: Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ritesh Harjani Cc: David Hildenbrand , Zi Yan , Michal Hocko , Oscar Salvador , Lorenzo Stoakes , Dev Jain , Liam.Howlett@oracle.com, linuxppc-dev@lists.ozlabs.org, Sayali Patil , Venkat Rao Bagalkote Subject: [PATCH v3 01/13] selftests/mm: restore default nr_hugepages value during cleanup in charge_reserved_hugetlb.sh Date: Fri, 27 Mar 2026 12:45:55 +0530 Message-ID: <2ba0f8d8a00fd049e8ed4b97e9ce8ee6b58a2892.1774591179.git.sayalip@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=IqITsb/g c=1 sm=1 tr=0 ts=69c62f04 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=Ikd4Dj_1AAAA:8 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=sNPh1B-_HOrnTu1bGgIA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI3MDA1MyBTYWx0ZWRfX5VJrdN7KDwEf x4LlXgWb3g2ro7KXdy8Aa74PP144Vn/m2ts6CcSt/0YWvfbO/BgJeb/lOU7AHM2zu+4fm2QO9ij zTQdnZLiLIg5Rfxt1a3BPHuuARV1fR1qvK7Jv7eyjLk40Ii//30IPCK04rv0YzncsIDfKmzo19Y 5/HTVRImMymJ4jVRJuD/6gcZgX4pvNW8RlHFCC8He1e1q4wwv689EyNBGYJpGBIc5WRUOB2TPf/ BOyPNBfn9ajcGaModU1d4t6HNRuzu2ItTXjy5GEPltVkbRwZkk7+Rzm9i3K+1FdaSoRR2U0o8gX kYbhKJinImAKDDIctAF8ujt8arbg8qC1Bvk35bmds775roKQ6foRiWUhGl6m03ZWG7Ha+gD0+WY /r+JeaptpJfBqom2DaN5uCt2yAt3u/ZB42+E/nNWZ5lTS1mHCq+Q895ayCAHsuR9wOywyqlDc3V aMgpwaBoYgZdR+agzyA== X-Proofpoint-GUID: uG984jRJZLhBh8Uf2gfHgtD0VraFWQ2w X-Proofpoint-ORIG-GUID: FPePvQfa7CAXk7r1VaI15sYSOzHNYwOL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-26_04,2026-03-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 spamscore=0 impostorscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603270053 Content-Type: text/plain; charset="utf-8" During cleanup, the value of /proc/sys/vm/nr_hugepages is currently being set to 0. At the end of the test, if all tests pass, the original nr_hugepages value is restored. However, if any test fails, it remains set to 0. With this patch, we ensure that the original nr_hugepages value is restored during cleanup, regardless of whether the test passes or fails. Fixes: 7d695b1c3695b ("selftests/mm: save and restore nr_hugepages value") Reviewed-by: Zi Yan Reviewed-by: David Hildenbrand (Arm) Tested-by: Venkat Rao Bagalkote Signed-off-by: Sayali Patil --- tools/testing/selftests/mm/charge_reserved_hugetlb.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh b/tools/= testing/selftests/mm/charge_reserved_hugetlb.sh index 447769657634..c9fe68b6fcf9 100755 --- a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh +++ b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh @@ -65,7 +65,7 @@ function cleanup() { if [[ -e $cgroup_path/hugetlb_cgroup_test2 ]]; then rmdir $cgroup_path/hugetlb_cgroup_test2 fi - echo 0 >/proc/sys/vm/nr_hugepages + echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages echo CLEANUP DONE } =20 --=20 2.52.0