linux-kernel - Re: [PATCH 05/12] selftests/mm: fix invocation of tests that are run via shell scripts

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Date:   Fri, 2 Jun 2023 11:34:10 -0400
From:   Peter Xu <peterx@...hat.com>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 05/12] selftests/mm: fix invocation of tests that are run
 via shell scripts

On Thu, Jun 01, 2023 at 06:33:51PM -0700, John Hubbard wrote:
> We cannot depend upon git to reliably retain the executable bit on shell
> scripts, or so I was told several years ago while working on this same
> run_vmtests.sh script. And sure enough, things such as test_hmm.sh are
> lately failing to run, due to lacking execute permissions.
> 
> A nice clean way to fix this would have been to use TEST_PROGS instead
> of TEST_FILES for the .sh scripts here. That tells the selftest
> framework to run these (and emit a warning if the files are not
> executable, but still run them anyway).
> 
> Unfortunately, run_vmtests.sh has its own run_test() routine, which does
> *not* do the right thing for shell scripts.
> 
> Fix this by explicitly adding "bash" to each of the shell script
> invocations. Leave fixing the overall approach to another day.

Is it possible someone just doesn't have "bash" at all?  I used to only use
"sh" without bash installed I think, but that was not on Linux, so I'm not
sure how much that applies..

Maybe use $(SHELL)?  I saw a bunch of usage in the tree too.

-- 
Peter Xu