linux-kernel - Re: [PATCH v3 7/8] selftests/mm: Add -a to run

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Date:   Mon, 26 Jun 2023 16:40:36 -0400
From:   Peter Xu <peterx@...hat.com>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     David Hildenbrand <david@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Lorenzo Stoakes <lstoakes@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...nel.org>,
        Yang Shi <shy828301@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        "Kirill A . Shutemov" <kirill@...temov.name>,
        James Houghton <jthoughton@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Hugh Dickins <hughd@...gle.com>,
        Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH v3 7/8] selftests/mm: Add -a to run_vmtests.sh

On Mon, Jun 26, 2023 at 01:24:45PM -0700, John Hubbard wrote:
> On 6/26/23 09:24, Peter Xu wrote:
> > On Mon, Jun 26, 2023 at 10:10:26AM +0200, David Hildenbrand wrote:
> > > On 23.06.23 16:29, Peter Xu wrote:
> > > > Allows to specify optional tests in run_vmtests.sh, where we can run time
> > > > consuming test matrix only when user specified "-a".
> > > 
> > > I'd have used something like "-e: extended tests that might be more
> > > time-consuming".
> > 
> > '-a' stands for "all" here, I worry '-e' may be misread into running "extra
> > tests only".
> > 
> 
> It's getting to the point where long options would help. This one
> could be "--stress-tests" or "--all", or "--include-long-running",
> for example.
> 
> I hesitate to suggest it because it's extra work, but at some point
> it would be nice. The options are already hopelessly un-guessable.

Thanks for being considerate, John.  Yes I do hope this series can converge
soon, indeed hopefully any further test patches can be worked on top.

To me I would be fine with either option (-a/-e), as long as there's easy
way to dump a help message, where "run_vmtest.sh -h" works for me always.

What's more "hopeless" along my way as an user is there's no help message
for gup_test.c even though its parameter list is crazily long.  I used to
"convince" myself that gup is just so special so someone should just
understand what option goes to what ioctl, better read into the .c file.
But I know that's an excuse.

Thanks,

-- 
Peter Xu