linux-kernel - Re: [RFC local_t removal V2 2/3] Remove local

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Message-Id: <201001080955.07231.arnd@arndb.de>
Date:	Fri, 8 Jan 2010 09:55:07 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Tejun Heo <tj@...nel.org>,
	Mike Frysinger <vapier.adi@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC local_t removal V2 2/3] Remove local_t type from tree.

On Thursday 07 January 2010 23:35:26 Christoph Lameter wrote:
> -#define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a))
> +       local_irq_save(flags);
> +       switch (size) {
> +       case 1: r = (*((u8 *)ptr) += value);
> +               break;
> +       case 2: r = (*((u16 *)ptr) += value);
> +               break;
> +       case 4: r = (*((u32 *)ptr) += value);
> +               break;
> +       case 8: r = (*((u64 *)ptr) += value);
> +               break;
> +       }
> +       local_irq_restore(flags);
> +       return r;
> +}

This still misses 'volatile'.

	Arnd
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