linux-kernel - Re: [PATCH 3/3] lib/vsprintf: Add %pC{,n,r} format specifiers for clocks

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Message-ID: <CAMuHMdVLWK7GCZsAU0EL7UW+b4cXCxdnO36wmTqUrnHtBU=MXA@mail.gmail.com>
Date:	Sat, 28 Feb 2015 09:53:18 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Joe Perches <joe@...ches.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jonathan Corbet <corbet@....net>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: Re: [PATCH 3/3] lib/vsprintf: Add %pC{,n,r} format specifiers for clocks

Hi Joe,

On Fri, Feb 27, 2015 at 11:55 PM, Joe Perches <joe@...ches.com> wrote:
> On Fri, 2015-02-27 at 14:18 -0800, Andrew Morton wrote:
>> On Thu, 26 Feb 2015 12:13:03 +0100 Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>> > Add format specifiers for printing struct clk:
>> >   - '%pC' or '%pCn': name (Common Clock Framework) or address (legacy
>> >     clock framework) of the clock,
>> >   - '%pCr': rate of the clock.
> []
>> Seems a bit cruel to teeny systems which don't implement clock.  How does
>> this look?  Saves 160 bytes in each powerpc build!
>
> Does this still emit a pointer value for those systems?
> Glancing at it, does it just emit NULL?

Yes, there's a "return string(buf, end, NULL, spec);" at the end.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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