linux-kernel - Re: git pull request for tip/tracing/urgent

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Message-ID: <49929763.3080608@kernel.org>
Date:	Wed, 11 Feb 2009 18:16:19 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: git pull request for tip/tracing/urgent

Hello,

Ingo Molnar wrote:
> This bit:
> 
>   	".section .fixup, \"ax\"\n"
>  	"4: movl $1, %[faulted]\n"
>  	"   jmp 3b\n"
>  	".previous\n"
> 
> Can be thought of as an 'embedded' or 'nested' section - the '.previous'
> directive jumps back to whatever section we were in before. This can be
> nested multiple times too:
> 
>    .section A
>    [...]
>      .section B
>      [...]
>         .section C
>         [...]
>         .previous
>      [...]
>      .previous
>    [...]
>    .previous

That will result in...

 A->B->C->B->C->B

.pushsection and .popsection should be used for nesting, right?

Thanks.

-- 
tejun
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