linux-kernel - Re: [PATCH 7/8] selftests/vm: run_vmtest.sh: update and clean up gup

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Date:   Mon, 28 Sep 2020 12:26:19 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Jonathan Corbet <corbet@....net>,
        Jérôme Glisse <jglisse@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Shuah Khan <shuah@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-s390@...r.kernel.org
Subject: Re: [PATCH 7/8] selftests/vm: run_vmtest.sh: update and clean up
 gup_test invocation

On Sun, Sep 27, 2020 at 11:21:58PM -0700, John Hubbard wrote:
> Run benchmarks on the _fast variants of gup and pup, as originally
> intended.
> 
> Run the new gup_test sub-test: dump pages. In addition to exercising the
> dump_page() call, it also demonstrates the various options you can use
> to specify which pages to dump, and how.
> 
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
> ---
>  tools/testing/selftests/vm/run_vmtest.sh | 24 ++++++++++++++++++------
>  1 file changed, 18 insertions(+), 6 deletions(-)
> 
> diff --git a/tools/testing/selftests/vm/run_vmtest.sh b/tools/testing/selftests/vm/run_vmtest.sh
> index d1843d5f3c30..e3a8b14d9df6 100755
> --- a/tools/testing/selftests/vm/run_vmtest.sh
> +++ b/tools/testing/selftests/vm/run_vmtest.sh
> @@ -124,9 +124,9 @@ else
>  fi
>  
>  echo "--------------------------------------------"
> -echo "running 'gup_test -U' (normal/slow gup)"
> +echo "running 'gup_test -u' (fast gup benchmark)"
>  echo "--------------------------------------------"
> -./gup_test -U
> +./gup_test -u
>  if [ $? -ne 0 ]; then
>  	echo "[FAIL]"
>  	exitcode=1
> @@ -134,10 +134,22 @@ else
>  	echo "[PASS]"
>  fi
>  
> -echo "------------------------------------------"
> -echo "running gup_test -b (pin_user_pages)"
> -echo "------------------------------------------"
> -./gup_test -b
> +echo "---------------------------------------------------"
> +echo "running gup_test -a (pin_user_pages_fast benchmark)"
> +echo "---------------------------------------------------"
> +./gup_test -a
> +if [ $? -ne 0 ]; then
> +	echo "[FAIL]"
> +	exitcode=1
> +else
> +	echo "[PASS]"
> +fi
> +
> +echo "--------------------------------------------------------------"
> +echo "running gup_test -ct -F 0x1 0 19 0x1000"
> +echo "   Dumps pages 0, 19, and 4096, using pin_user_pages (-F 0x1)"
> +echo "--------------------------------------------------------------"
> +./gup_test -ct -F 0x1 0 19 0x1000

Ah here it is...  Maybe just remove that from the previous commit message.

Ira

>  if [ $? -ne 0 ]; then
>  	echo "[FAIL]"
>  	exitcode=1
> -- 
> 2.28.0
> 
>