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()
Date: Mon, 22 Jun 2015 15:33:27 +0200 [thread overview]
Message-ID: <20150622133327.GT3644@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <1434978981-12831-1-git-send-email-linux@rasmusvillemoes.dk>
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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next prev parent reply other threads:[~2015-06-22 13:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 13:16 Rasmus Villemoes
2015-06-22 13:16 ` [not-a-PATCH 2/2] futex: eliminate instruction from hash_futex Rasmus Villemoes
2015-06-22 13:33 ` Peter Zijlstra [this message]
2015-06-22 13:45 ` [PATCH 1/2] futex: eliminate cache miss from futex_hash() Rasmus Villemoes
2015-06-22 13:55 ` Peter Zijlstra
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