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Date:   Fri, 31 Mar 2023 12:47:56 -0400
From:   Peter Xu <peterx@redhat.com>
To:     linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc:     Mike Kravetz <mike.kravetz@oracle.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Mike Rapoport <rppt@linux.vnet.ibm.com>,
        Axel Rasmussen <axelrasmussen@google.com>,
        Nadav Amit <nadav.amit@gmail.com>,
        Leonardo Bras Soares Passos <lsoaresp@redhat.com>,
        David Hildenbrand <david@redhat.com>
Subject: Re: [PATCH 00/29] selftests/mm: Split / Refactor userfault test
Message-ID: <ZCcOvIJKR9lgoC43@x1n>
References: <20230330155707.3106228-1-peterx@redhat.com>
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On Thu, Mar 30, 2023 at 11:56:38AM -0400, Peter Xu wrote:
> UFFDIO_API (with syscall)... done
> UFFDIO_API (with /dev/userfaultfd)... done
> zeropage on anon... done
> zeropage on shmem... done
> zeropage on shmem-private... done
> zeropage-hugetlb on hugetlb... done
> zeropage-hugetlb on hugetlb-private... done
> pagemap on anon... pagemap on anon... pagemap on anon... done
> wp-unpopulated on anon... done
> minor on shmem... done
> minor on hugetlb... done
> minor-wp on shmem... done
> minor-wp on hugetlb... done
> minor-collapse on shmem... done
> sigbus on anon... sigbus on anon... done
> sigbus on shmem... sigbus on shmem... done
> sigbus on shmem-private... sigbus on shmem-private... done
> sigbus on hugetlb... sigbus on hugetlb... done
> sigbus on hugetlb-private... sigbus on hugetlb-private... done
> sigbus-wp on anon... sigbus-wp on anon... done
> sigbus-wp on shmem... sigbus-wp on shmem... done
> sigbus-wp on shmem-private... sigbus-wp on shmem-private... done
> sigbus-wp on hugetlb... sigbus-wp on hugetlb... done
> sigbus-wp on hugetlb-private... sigbus-wp on hugetlb-private... done
> events on anon... events on anon... done
> events on shmem... events on shmem... done
> events on shmem-private... events on shmem-private... done
> events on hugetlb... events on hugetlb... done
> events on hugetlb-private... events on hugetlb-private... done
> events-wp on anon... events-wp on anon... done
> events-wp on shmem... events-wp on shmem... done
> events-wp on shmem-private... events-wp on shmem-private... done
> events-wp on hugetlb... events-wp on hugetlb... done
> events-wp on hugetlb-private... events-wp on hugetlb-private... done

Oops, the sigbus/events test do not look right here..  I think I slightly
messed it up right before I post this set.

I'll squash below change into "selftests/mm: UFFDIO_API test" in the next
post to fix this up:

===8<===
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c
index 9e7f7c7f2982..793931da5056 100644
--- a/tools/testing/selftests/mm/uffd-unit-tests.c
+++ b/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -92,8 +92,10 @@ static void uffd_test_pass(void)
 }
 
 #define  uffd_test_start(...)  do {            \
+               printf("Testing ");             \
                printf(__VA_ARGS__);            \
                printf("... ");                 \
+               fflush(stdout);                 \
                uffd_test_acct.total++;         \
        } while (0)
===8<===

So it should look like:

===8<===
Testing UFFDIO_API (with syscall)... done
Testing UFFDIO_API (with /dev/userfaultfd)... done
Testing zeropage on anon... done
Testing zeropage on shmem... done
Testing zeropage on shmem-private... done
Testing zeropage-hugetlb on hugetlb... done
Testing zeropage-hugetlb on hugetlb-private... done
Testing pagemap on anon... done
Testing wp-unpopulated on anon... done
Testing minor on shmem... done
Testing minor on hugetlb... done
Testing minor-wp on shmem... done
Testing minor-wp on hugetlb... done
Testing minor-collapse on shmem... done
Testing sigbus on anon... done
Testing sigbus on shmem... done
Testing sigbus on shmem-private... done
Testing sigbus on hugetlb... done
Testing sigbus on hugetlb-private... done
Testing sigbus-wp on anon... done
Testing sigbus-wp on shmem... done
Testing sigbus-wp on shmem-private... done
Testing sigbus-wp on hugetlb... done
Testing sigbus-wp on hugetlb-private... done
Testing events on anon... done
Testing events on shmem... done
Testing events on shmem-private... done
Testing events on hugetlb... done
Testing events on hugetlb-private... done
Testing events-wp on anon... done
Testing events-wp on shmem... done
Testing events-wp on shmem-private... done
Testing events-wp on hugetlb... done
Testing events-wp on hugetlb-private... done
Userfaults unit tests: pass=34, skip=0, fail=0 (total=34)
===8<===

-- 
Peter Xu