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From: Rudo Thomas <rudo@matfyz.cz>
To: Gustavo Barbieri <barbieri@gmail.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
	ck@vds.kolivas.org, linux-kernel@vger.kernel.org
Subject: Re: Re: [PATCH] vm - swap_prefetch-15
Date: Fri, 7 Oct 2005 20:28:17 +0200	[thread overview]
Message-ID: <20051007182817.GA8145@jikos.cz> (raw)
In-Reply-To: <9ef20ef30510070744l7ff1f1bbweb4da1ceb513f246@mail.gmail.com>

> Or make it a "const static" variable, so compiler will check types and
> everything, but the symbol will not be present in the binary, causing
> no overhead. So it could be:
> 
> const unsigned PREFETCH_PAGES = (SWAP_CLUSTER_MAX * swap_prefetch * \
>         (1 + 9 * laptop_mode));

This won't work, AFAICT. swap_prefetch and laptop_mode are variables,
but with the code above, they would be evaluated only once. And maybe
the compiler will reject that code immediately...

Rudo.

  reply	other threads:[~2005-10-07 18:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-06 14:01 [PATCH] vm - swap_prefetch-15 Con Kolivas
2005-10-06 14:13 ` [PATCH] vm - swap_prefetch-15 docs Con Kolivas
2005-10-07 10:03 ` [PATCH] vm - swap_prefetch-15 Pekka Enberg
2005-10-07 10:54   ` Con Kolivas
2005-10-07 11:31     ` Pekka Enberg
2005-10-07 12:08       ` Con Kolivas
2005-10-07 12:26         ` Pekka J Enberg
2005-10-07 12:33           ` Con Kolivas
2005-10-07 12:49             ` Pekka J Enberg
2005-10-07 14:44       ` [ck] " Gustavo Barbieri
2005-10-07 18:28         ` Rudo Thomas [this message]
2005-10-07 18:40           ` Gustavo Barbieri
2005-10-07 11:46 ` Paolo Ciarrocchi
2005-10-07 12:18   ` Con Kolivas

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