The patch titled
Subject: userfaultfd: selftest: don't error out if pthread_mutex_t isn't identical
has been added to the -mm tree. Its filename is
userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical.patch
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------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: selftest: don't error out if pthread_mutex_t isn't identical
On ppc big endian this check fails, the mutex doesn't necessarily need to
be identical for all pages after pthread_mutex_lock/unlock cycles. The
count verification (outside of the pthread_mutex_t structure) suffices and
that is retained.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Cc: Thierry Reding <treding@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/userfaultfd.c | 9 ---------
1 file changed, 9 deletions(-)
diff -puN tools/testing/selftests/vm/userfaultfd.c~userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical tools/testing/selftests/vm/userfaultfd.c
--- a/tools/testing/selftests/vm/userfaultfd.c~userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical
+++ a/tools/testing/selftests/vm/userfaultfd.c
@@ -580,15 +580,6 @@ static int userfaultfd_stress(void)
/* verification */
if (bounces & BOUNCE_VERIFY) {
for (nr = 0; nr < nr_pages; nr++) {
- if (my_bcmp(area_dst,
- area_dst + nr * page_size,
- sizeof(pthread_mutex_t))) {
- fprintf(stderr,
- "error mutex %lu\n",
- nr);
- err = 1;
- bounces = 0;
- }
if (*area_count(area_dst, nr) != count_verify[nr]) {
fprintf(stderr,
"error area_count %Lu %Lu %lu\n",
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-revert-userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key.patch
userfaultfd-selftest-headers-fixup.patch
userfaultfd-selftest-avoid-my_bcmp-false-positives-with-powerpc.patch
userfaultfd-selftest-return-an-error-if-bounce_verify-fails.patch
userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical.patch
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