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Date: Mon, 22 Jun 2015 15:33:27 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Richard Weinberger <richard@nod.at>,
        Andy Lutomirski <luto@amacapital.net>, Darren Hart <darren@dvhart.com>,
        Oleg Nesterov <oleg@redhat.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] futex: eliminate cache miss from futex_hash()
Message-ID: <20150622133327.GT3644@twins.programming.kicks-ass.net>
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On Mon, Jun 22, 2015 at 03:16:18PM +0200, Rasmus Villemoes wrote:
> +static struct {
> +	struct futex_hash_bucket *queues;
> +	unsigned long            hashsize;
> +} __futex_data __read_mostly __aligned(16);

Does: __aligned(sizeof(__futex_data)), work?

Because 16 might waste 8 bytes on 32bit.
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