linux-kernel - Re: [GIT RFC] percpu: use dynamic percpu allocator as the default percpu allocator

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Message-ID: <20090331191703.GA8250@jurassic.park.msu.ru>
Date:	Tue, 31 Mar 2009 23:17:03 +0400
From:	Ivan Kokshaysky <ink@...assic.park.msu.ru>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	rusty@...tcorp.com.au, tglx@...utronix.de, x86@...nel.org,
	linux-kernel@...r.kernel.org, hpa@...or.com,
	Paul Mundt <lethal@...ux-sh.org>, rmk@....linux.org.uk,
	starvik@...s.com, ralf@...ux-mips.org, davem@...emloft.net,
	cooloney@...nel.org, kyle@...artin.ca, matthew@....cx,
	grundler@...isc-linux.org, takata@...ux-m32r.org,
	benh@...nel.crashing.org, rth@...ddle.net,
	heiko.carstens@...ibm.com
Subject: Re: [GIT RFC] percpu: use dynamic percpu allocator as the default
	percpu allocator

On Tue, Mar 31, 2009 at 06:54:31PM +0200, Martin Schwidefsky wrote:
> I got the dynamic cpu allocator to work with the patch below. Anybody
> with an objection against the SHIFT_PERCPU_VAR macro ?

That's fine with me.

> --- linux-next/arch/alpha/include/asm/percpu.h	2009-03-31 15:55:03.000000000 +0200
> +++ linux-s390/arch/alpha/include/asm/percpu.h	2009-03-31 15:55:46.000000000 +0200
> @@ -47,6 +47,8 @@ extern unsigned long __per_cpu_offset[NR
>  		: "=&r"(__ptr), "=&r"(tmp_gp));		\
>  	(typeof(&per_cpu_var(var)))(__ptr + (offset)); })
>  
> +#define SHIFT_PERCPU_VAR(var, offset) SHIFT_PERCPU_PTR(var, offset)
> +

No, just do s/SHIFT_PERCPU_PTR/SHIFT_PERCPU_VAR/ in
arch/alpha/include/asm/percpu.h and the rest of your patch would
fix alpha as well.

Ivan.
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