Re: [PATCH 03/10] jump label v11: base patch

David Miller
2010-09-17T18:21:02Z

From: Jason Baron <jbaron@redhat.com>
Date: Fri, 17 Sep 2010 11:09:00 -0400

> base patch to implement 'jump labeling'. Based on a new 'asm goto' inline
> assembly gcc mechanism, we can now branch to labels from an 'asm goto'
> statment. This allows us to create a 'no-op' fastpath, which can subsequently
> be patched with a jump to the slowpath code. This is useful for code which
> might be rarely used, but which we'd like to be able to call, if needed.
> Tracepoints are the current usecase that these are being implemented for.
>
> Signed-off-by: Jason Baron <jbaron@redhat.com>

Acked-by: David S. Miller <davem@davemloft.net>