linux-kernel - Re: [PATCH] branch tracer: fix freak link error

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Message-ID: <20160215124746.44e8c2d0@gandalf.local.home>
Date:	Mon, 15 Feb 2016 12:47:46 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH] branch tracer: fix freak link error

On Fri, 12 Feb 2016 22:26:42 +0100
Arnd Bergmann <arnd@...db.de> wrote:

> In my randconfig tests, I came across a bug that involves several
> components:
> 
>

[..]

> 
> This patch avoids the problem by changing __trace_if() to check
> whether the condition is known at compile-time to be nonzero, rather
> than checking whether it is actually a constant.
> 
> I see this one link error in roughly one out of 1600 randconfig builds
> on ARM, and the patch fixes all known instances.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: ab3c9c686e22 ("branch tracer, intel-iommu: fix build with CONFIG_BRANCH_TRACER=y")

Want me to pull this into my queue? I have another patch I need to send
to Linus and I can add this in that pull request.

-- Steve