• Mike Kravetz's avatar
    selftests/memfd: add memfd_create hugetlbfs selftest · 1f522a48
    Mike Kravetz authored
    With the addition of hugetlbfs support in memfd_create, the memfd
    selftests should verify correct functionality with hugetlbfs.
    
    Instead of writing a separate memfd hugetlbfs test, modify the
    memfd_test program to take an optional argument 'hugetlbfs'.  If the
    hugetlbfs argument is specified, basic memfd_create functionality will
    be exercised on hugetlbfs.  If hugetlbfs is not specified, the current
    functionality of the test is unchanged.
    
    Note that many of the tests in memfd_test test file sealing operations.
    hugetlbfs does not support file sealing, therefore for hugetlbfs all
    sealing related tests are skipped.
    
    In order to test on hugetlbfs, there needs to be preallocated huge
    pages.  A new script (run_tests) is added.  This script will first run
    the existing memfd_create tests.  It will then, attempt to allocate the
    required number of huge pages before running the hugetlbfs test.  At the
    end of testing, it will release any huge pages allocated for testing
    purposes.
    
    Link: http://lkml.kernel.org/r/1502495772-24736-3-git-send-email-mike.kravetz@oracle.comSigned-off-by: default avatarMike Kravetz <mike.kravetz@oracle.com>
    Cc: Michal Hocko <mhocko@suse.com>
    Cc: Hugh Dickins <hughd@google.com>
    Cc: Andrea Arcangeli <aarcange@redhat.com>
    Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    1f522a48
Makefile 356 Bytes