linux-kernel - Re: [PATCH 1/9] x86/entry/head/32: use local labels

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Message-ID: <CALCETrVwG67qzHc=RrcBPtxhLST1ogwEjDe9RLyx3cOGcGH+CQ@mail.gmail.com>
Date:   Tue, 20 Sep 2016 17:57:16 -0700
From:   Andy Lutomirski <luto@...capital.net>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Nilay Vaish <nilayvaish@...il.com>,
        Ingo Molnar <mingo@...nel.org>,
        Brian Gerst <brgerst@...il.com>, X86 ML <x86@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 1/9] x86/entry/head/32: use local labels

On Sep 20, 2016 10:03 AM, "Josh Poimboeuf" <jpoimboe@...hat.com> wrote:
>
> Add the local label prefix to all non-function named labels in head_32.S
> and entry_32.S.  In addition to decluttering the symbol table, it also
> will help stack traces to be more sensible.  For example, the last
> reported function in the idle task stack trace will be startup_32_smp()
> instead of is486().
>

I think that restore_all, at least, should stay.  It's a common tail
for lots of functions.  I haven't checked this patch for other cases
where the new label is worse than the old for debugging.

--Andy