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Date:   Sat, 15 Apr 2023 16:44:47 +0100
From:   Lorenzo Stoakes <lstoakes@gmail.com>
To:     Peter Xu <peterx@redhat.com>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Nadav Amit <nadav.amit@gmail.com>,
        David Hildenbrand <david@redhat.com>,
        Mike Rapoport <rppt@linux.vnet.ibm.com>,
        Axel Rasmussen <axelrasmussen@google.com>,
        Leonardo Bras Soares Passos <lsoaresp@redhat.com>,
        Mike Rapoport <rppt@kernel.org>
Subject: Re: [PATCH v2 05/31] selftests/mm: Use TEST_GEN_PROGS where proper
Message-ID: <7a053781-b56a-4366-bff9-d19971594043@lucifer.local>
References: <20230412163922.327282-1-peterx@redhat.com>
 <20230412164218.328104-1-peterx@redhat.com>
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On Wed, Apr 12, 2023 at 12:42:18PM -0400, Peter Xu wrote:
> TEST_GEN_PROGS and TEST_GEN_FILES are used randomly in the mm/Makefile to
> specify programs that need to build.  Logically all these binaries should
> all fall into TEST_GEN_PROGS.
>
> Replace those TEST_GEN_FILES with TEST_GEN_PROGS, so that we can reference
> all the tests easily later.
>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>  tools/testing/selftests/mm/Makefile | 63 +++++++++++++++--------------
>  1 file changed, 32 insertions(+), 31 deletions(-)
>
> diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile
> index 9d9822b4bf24..74988f5adc5f 100644
> --- a/tools/testing/selftests/mm/Makefile
> +++ b/tools/testing/selftests/mm/Makefile
> @@ -31,35 +31,36 @@ MAKEFLAGS += --no-builtin-rules
>
>  CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES)
>  LDLIBS = -lrt -lpthread
> -TEST_GEN_FILES = cow
> -TEST_GEN_FILES += compaction_test
> -TEST_GEN_FILES += gup_test
> -TEST_GEN_FILES += hmm-tests
> -TEST_GEN_FILES += hugetlb-madvise
> -TEST_GEN_FILES += hugepage-mmap
> -TEST_GEN_FILES += hugepage-mremap
> -TEST_GEN_FILES += hugepage-shm
> -TEST_GEN_FILES += hugepage-vmemmap
> -TEST_GEN_FILES += khugepaged
> +
> +TEST_GEN_PROGS = cow
> +TEST_GEN_PROGS += compaction_test
> +TEST_GEN_PROGS += gup_test
> +TEST_GEN_PROGS += hmm-tests
> +TEST_GEN_PROGS += hugetlb-madvise
> +TEST_GEN_PROGS += hugepage-mmap
> +TEST_GEN_PROGS += hugepage-mremap
> +TEST_GEN_PROGS += hugepage-shm
> +TEST_GEN_PROGS += hugepage-vmemmap
> +TEST_GEN_PROGS += khugepaged
>  TEST_GEN_PROGS = madv_populate

This now results in TEST_GEN_PROGS being set to "cow compaction_test
gup_test..." then here that is discarded and we start again from
madv_populate meaning none of the prior tests get built.

I notice this today when trying to build the gup_test :)

I think this should be a += not an = (which made sense before as there were
two different variables being assigned then).

> -TEST_GEN_FILES += map_fixed_noreplace
> -TEST_GEN_FILES += map_hugetlb
> -TEST_GEN_FILES += map_populate
> -TEST_GEN_FILES += memfd_secret
> -TEST_GEN_FILES += migration
> +TEST_GEN_PROGS += map_fixed_noreplace
> +TEST_GEN_PROGS += map_hugetlb
> +TEST_GEN_PROGS += map_populate
> +TEST_GEN_PROGS += memfd_secret
> +TEST_GEN_PROGS += migration
>  TEST_GEN_PROGS += mkdirty
> -TEST_GEN_FILES += mlock-random-test
> -TEST_GEN_FILES += mlock2-tests
> -TEST_GEN_FILES += mrelease_test
> -TEST_GEN_FILES += mremap_dontunmap
> -TEST_GEN_FILES += mremap_test
> -TEST_GEN_FILES += on-fault-limit
> -TEST_GEN_FILES += thuge-gen
> -TEST_GEN_FILES += transhuge-stress
> -TEST_GEN_FILES += userfaultfd
> +TEST_GEN_PROGS += mlock-random-test
> +TEST_GEN_PROGS += mlock2-tests
> +TEST_GEN_PROGS += mrelease_test
> +TEST_GEN_PROGS += mremap_dontunmap
> +TEST_GEN_PROGS += mremap_test
> +TEST_GEN_PROGS += on-fault-limit
> +TEST_GEN_PROGS += thuge-gen
> +TEST_GEN_PROGS += transhuge-stress
> +TEST_GEN_PROGS += userfaultfd
>  TEST_GEN_PROGS += soft-dirty
>  TEST_GEN_PROGS += split_huge_page_test
> -TEST_GEN_FILES += ksm_tests
> +TEST_GEN_PROGS += ksm_tests
>  TEST_GEN_PROGS += ksm_functional_tests
>  TEST_GEN_PROGS += mdwe_test
>
> @@ -77,24 +78,24 @@ CFLAGS += -no-pie
>  endif
>
>  ifeq ($(CAN_BUILD_I386),1)
> -TEST_GEN_FILES += $(BINARIES_32)
> +TEST_GEN_PROGS += $(BINARIES_32)
>  endif
>
>  ifeq ($(CAN_BUILD_X86_64),1)
> -TEST_GEN_FILES += $(BINARIES_64)
> +TEST_GEN_PROGS += $(BINARIES_64)
>  endif
>  else
>
>  ifneq (,$(findstring $(MACHINE),ppc64))
> -TEST_GEN_FILES += protection_keys
> +TEST_GEN_PROGS += protection_keys
>  endif
>
>  endif
>
>  ifneq (,$(filter $(MACHINE),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64))
> -TEST_GEN_FILES += va_128TBswitch
> -TEST_GEN_FILES += virtual_address_range
> -TEST_GEN_FILES += write_to_hugetlbfs
> +TEST_GEN_PROGS += va_128TBswitch
> +TEST_GEN_PROGS += virtual_address_range
> +TEST_GEN_PROGS += write_to_hugetlbfs
>  endif
>
>  TEST_PROGS := run_vmtests.sh
> --
> 2.39.1
>