linux-kernel - Re: Arm Compiler

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Message-ID: <20140708143707.GC13433@titan.lakedaemon.net>
Date:	Tue, 8 Jul 2014 10:37:07 -0400
From:	Jason Cooper <jason@...edaemon.net>
To:	Nick Krause <xerofoify@...il.com>
Cc:	Theodore Ts'o <tytso@....edu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Arm Compiler - Part 1 of Compiling Tests

Nick,

Please don't top-post.  I've fixed it up ...

On Mon, Jul 07, 2014 at 01:35:24PM -0400, Nick Krause wrote:
> On Mon, Jul 7, 2014 at 9:46 AM, Theodore Ts'o <tytso@....edu> wrote:
> > On Mon, Jul 07, 2014 at 01:22:13AM -0400, Nick Krause wrote:
> >> Here are my logs of the builds attached  with warnings if they succeed
> >> for now failing arm configs
> >> according to the tests here,
> >
> > fs/direct-io.c: In function ‘__blockdev_direct_IO’:
> > fs/direct-io.c:1011:12: warning: ‘to’ may be used uninitialized in this
> > function [-Wmaybe-uninitialized]
> >     u = (to - from) >> blkbits;
> >
> > OK, do you see why this is a false positive?  And why asking the
> > thousands of people "in the commmunity" to all do exactly the same
> > evaluation is a massive waste of time?

I already sent a patch explaining it was a false-positive and silencing
the warning:

  http://www.gossamer-threads.com/lists/linux/kernel/1956499

> In addition all the arm configs that were failing for linux next to
> compile that didn't succeed are succeeded as of now. That seems useful
> to tell the arm developers.

We already have a buildbot running and automated boot testing.  The
mailinglist is here:

  http://lists.linaro.org/mailman/listinfo/kernel-build-reports

Links to the reports are in the emails.  Please review and see if there
is anything we're missing.  Please keep in mind this is a volunteer task
for those currently running it.  Contributions would be much more
appreciated than good ideas ;-)

thx,

Jason.
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