linux-kernel - Re: [PATCH] rcupdate: move synchronize

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Date:	Tue, 4 Nov 2008 10:15:56 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rcupdate: move synchronize_sched() back to rcupdate.c


* Lai Jiangshan <laijs@...fujitsu.com> wrote:

> this fix will increase about several hundred bytes to the kernel 
> text for rcuclassic.

hm, why is that, and is it true for the full vmlinux as well, for a 
reasonably large .config?

Do you get the size increase even if these two are enabled:

 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_OPTIMIZE_INLINING=y

?

i'd expect the opposite or same-size: given that an ugly 
quasi-inlining macro is replaced with a shared, out of line function.

	Ingo
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