linux-kernel - Re: [tip:x86/asm] x86: Pack function addresses tightly as well

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Message-ID: <CAK1hOcO1nWFsOrubEDO0wU=+Dubk3tx1UFB-Za+W0Nxd=V1i7g@mail.gmail.com>
Date:	Mon, 18 May 2015 11:28:25 +0200
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Davidlohr Bueso <dave@...olabs.net>,
	Peter Anvin <hpa@...or.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Borislav Petkov <bp@...en8.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"Chandramouleeswaran, Aswin" <aswin@...com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Brian Gerst <brgerst@...il.com>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Low <jason.low2@...com>,
	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/asm] x86: Pack function addresses tightly as well

On Sun, May 17, 2015 at 7:58 AM, Ingo Molnar <mingo@...nel.org> wrote:
>      With function packing, they compress into:
>
>         ffffffff817f2458 T _raw_spin_unlock_irqrestore
>         ffffffff817f2463 T _raw_read_unlock_irqrestore

So   _raw_spin_unlock_irqrestore is only 11 bytes long?

Sounds like it should have been inlined.
Is this with CONFIG_OPTIMIZE_INLINES=y ?
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