selftests/mm: create uffd-common.[ch]

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Move common utility functions into uffd-common.[ch] files from the
original userfaultfd.c.  This prepares for a split of userfaultfd.c into
two tests: one to only cover the old but powerful stress test, the other
one covers all the functional tests.

This movement is kind of a brute-force effort for now, with light
touch-ups but nothing should really change.  There's chances to optimize
more, but let's leave that for later.

Link: https://lkml.kernel.org/r/20230412164241.328259-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Peter Xu 2023-04-12 12:42:41 -04:00 • committed by Andrew Morton

parent 618aeb5d62

commit 33be4e8928

4 changed files with 731 additions and 693 deletions

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2

tools/testing/selftests/mm/Makefile

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611

tools/testing/selftests/mm/uffd-common.c

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117

tools/testing/selftests/mm/uffd-common.h

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694

tools/testing/selftests/mm/userfaultfd.c

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