linux-kernel - Re: [PATCH 8/9] jump label: Make arch_jump_label_text_poke

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Message-ID: <1287178546.16971.4.camel@gandalf.stny.rr.com>
Date:	Fri, 15 Oct 2010 17:35:46 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	David Daney <ddaney@...iumnetworks.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jason Baron <jbaron@...hat.com>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH 8/9] jump label: Make arch_jump_label_text_poke_early()
 optional

On Fri, 2010-10-15 at 14:22 -0700, David Daney wrote:

> Really the SPARC code (and any architectures added in the future with a 
> well defined optimal NOP) should be doing nothing here as well.
> 
> So I could turn the question around and ask:  How many empty definitions 
> of this thing do you want in the tree?
> 
> I will defer to Steven.  If he wants to push the empty stubs into all 
> the architectures, I will update the MIPS patch and he can remove/revert 
> the 'jump label: Make arch_jump_label_text_poke_early() optional' patch.
> 
> Let me know which option you would prefer.

On IRC, Thomas Gleixner mentioned a better solution (something I've done
with ftrace). Just add a "weak" stub function. No need to get Kconfig
involved.

-- Steve


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