linux-kernel - Re: [PATCH 1/5] rcusync: introduce struct rcu_sync

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Message-ID: <CA+55aFwda1pErt32162S_1gq=Kkge7Gj3n2sm_rOopAtz2bVUQ@mail.gmail.com>
Date:	Fri, 4 Oct 2013 12:38:37 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/5] rcusync: introduce struct rcu_sync_ops

On Fri, Oct 4, 2013 at 12:30 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
>
> As all the rcu_synchronization() methods (on non UP) are quite
> expensive, I doubt that this optimization is worth anything.

Maybe. It just annoys me, because afaik, the function that gets called
is always static per callsite.

                  Linus
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