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

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Date:	Tue, 8 Oct 2013 17:33:25 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	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 10/08, Peter Zijlstra wrote:
>
> I think Linus meant to have rcu_sync_{enter,exit} as inlines with a
> const enum argument for the gp_type.
>
> That said; yes that will generate better code, but also more code, and
> like Steven already argued performance isn't really an issue here since
> we're going to potentially sleep for a rather long time.

Yes, I do not think that we should make them "inline". Plus we need the
non-inline rcu_sync_func() anyway.

Thanks again for the last series you sent.

Oleg.

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