Commit d432e884 authored by Cao Ruichuang's avatar Cao Ruichuang Committed by Andrew Morton
Browse files

selftests: mm: skip charge_reserved_hugetlb without killall 

charge_reserved_hugetlb.sh tears down background writers with killall from
psmisc.  Minimal Ubuntu images do not always provide that tool, so the
selftest fails in cleanup for an environment reason rather than for the
hugetlb behavior it is trying to cover.

Skip the test when killall is unavailable, similar to the existing root
check, so these environments report the dependency clearly instead of
failing the test.

Link: https://lore.kernel.org/20260410044139.67480-1-create0818@163.com


Signed-off-by: default avatarCao Ruichuang <create0818@163.com>
Acked-by: default avatarMike Rapoport (Microsoft) <rppt@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 161ce69c

tools/testing/selftests/mm/charge_reserved_hugetlb.sh

+5 −0
Original line number Diff line number Diff line
@@ -11,6 +11,11 @@ if [[ $(id -u) -ne 0 ]]; then 
  exit $ksft_skip

fi



if ! command -v killall >/dev/null 2>&1; then

  echo "killall not available. Skipping..."

  exit $ksft_skip

fi



nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages)



fault_limit_file=limit_in_bytes