linux-kernel - Re: [PATCH] perf: Store active software events in a hashlist

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Message-ID: <1270630946.5109.566.camel@twins>
Date:	Wed, 07 Apr 2010 11:02:26 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH] perf: Store active software events in a hashlist

On Mon, 2010-04-05 at 16:08 +0200, Frederic Weisbecker wrote:
> +#define SWEVENT_HLIST_BITS     8
> +#define SWEVENT_HLIST_SIZE     ((1 << (SWEVENT_HLIST_BITS + 1)) - 1)

That seems to result in 9 bits worth, doesn't it?


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