From: Scott Wood <scottwood@freescale.com>
To: Alexander Graf <agraf@suse.de>
Cc: linuxppc-dev@lists.ozlabs.org, Stuart Yoder <stuart.yoder@freescale.com>
Subject: Re: [PATCH] PPC: use CURRENT_THREAD_INFO instead of open coded assembly
Date: Mon, 2 Jul 2012 16:31:47 -0500 [thread overview]
Message-ID: <4FF21343.20408@freescale.com> (raw)
In-Reply-To: <DAF1D512-B0CF-497D-8626-1C75103C6EA0@suse.de>
On 07/02/2012 04:27 PM, Alexander Graf wrote:
>
> On 02.07.2012, at 23:26, Benjamin Herrenschmidt wrote:
>
>> On Mon, 2012-07-02 at 22:59 +0200, Alexander Graf wrote:
>>> This should go into an #ifdef __ASSEMBLY__ block, right? :)
>>
>> We almost never use #ifdef __ASSEMBLY__, we use it the other way
>> around, to prevent C stuff from being included in assembly. The
>> other way around is legit since things might be used in inline asm
>> for example.
>
> I'm not sure I want to see this bit of code used as is in inline asm
> :). I don't even think it's possible, since it's a full statement.
> Either way, it's safer with the guard.
Safer from what? It won't be expanded unless referenced. How is this
better than putting ifdefs on #includes, prototypes, struct definitions,
etc.? The ifdef is just clutter.
-Scott
next prev parent reply other threads:[~2012-07-02 21:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-02 20:56 [PATCH] PPC: use CURRENT_THREAD_INFO instead of open coded assembly Stuart Yoder
2012-07-02 20:59 ` Alexander Graf
2012-07-02 21:26 ` Benjamin Herrenschmidt
2012-07-02 21:27 ` Alexander Graf
2012-07-02 21:31 ` Scott Wood [this message]
2012-07-02 21:34 ` Alexander Graf
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