linux-kernel - Re: [PATCH] lib/vsprintf: add %pT format specifier

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Message-ID: <1389406553.2537.52.camel@joe-AO722>
Date:	Fri, 10 Jan 2014 18:15:53 -0800
From:	Joe Perches <joe@...ches.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	akpm@...ux-foundation.org, pavel@....cz, keescook@...omium.org,
	geert@...ux-m68k.org, jkosina@...e.cz, viro@...iv.linux.org.uk,
	davem@...emloft.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib/vsprintf: add %pT format specifier

On Sat, 2014-01-11 at 10:59 +0900, Tetsuo Handa wrote:
> I just added noinline_for_stack as with other functions does.
> But indeed, stack used by name[] is only 16 bytes but stack used by function
> arguments are larger than 16 bytes. We should remove noinline_for_stack ?

My recollection is that certain gcc versions don't do
well with multiple inline functions that have stack
variables.

Instead of collapsing the variables, gcc will
accumulate the stack depth of all the inlines
args instead of reusing the stack.


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