From: Ingo Molnar <mingo@elte.hu>
To: Tejun Heo <tj@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: git pull request for tip/tracing/urgent
Date: Wed, 11 Feb 2009 10:53:25 +0100 [thread overview]
Message-ID: <20090211095325.GD20518@elte.hu> (raw)
In-Reply-To: <49929763.3080608@kernel.org>
* Tejun Heo <tj@kernel.org> wrote:
> 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.
hm ... doh, yes. I think we even had a bug in this area.
Why is it implemented like this? These semantics seem to make no sense.
Ingo
next prev parent reply other threads:[~2009-02-11 9:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-10 18:19 git pull request for tip/tracing/urgent Steven Rostedt
2009-02-10 18:30 ` Frederic Weisbecker
2009-02-10 23:00 ` Steven Rostedt
2009-02-11 1:28 ` Frederic Weisbecker
2009-02-11 9:02 ` Ingo Molnar
2009-02-11 9:16 ` Tejun Heo
2009-02-11 9:53 ` Ingo Molnar [this message]
2009-02-12 1:24 ` H. Peter Anvin
2009-02-11 13:40 ` Frederic Weisbecker
2009-02-11 8:49 ` Ingo Molnar
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