linux-kernel - Re: [PATCH] perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)

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Message-ID: <CAJAFBLDzX78w=uaTdBQ_obb9hBMLGXG1Ec0hb199HEXxXQBPjQ@mail.gmail.com>
Date:   Mon, 6 Aug 2018 16:04:40 -0700
From:   Fubo Chen <fubo.chen@...il.com>
To:     peterz@...radead.org
Cc:     jpoimboe@...hat.com, Ingo Molnar <mingo@...nel.org>,
        bhole_prashant_q7@....ntt.co.jp,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)

On Mon, Aug 6, 2018 at 3:30 PM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Mon, Aug 06, 2018 at 02:28:18PM -0700, Fubo Chen wrote:
> > Do you think the patch below is sufficient to suppress the sparse warning?
>
> Why would I want to make the code ugly to supress it?

There are many kernel developers who use sparse to verify the
correctness of endianness annotations (__be32, __le32, ...). When
compiling kernel code with sparse every warning that is reported by
sparse should be analyzed. Most kernel developers consider it annoying
having to deal with false positive warnings. So I think that is useful
to suppress false positive sparse warnings if it is possible to
suppress false positives with a reasonable effort.

Thanks,

Fubo.

-- 
Fubo.