From: Andi Kleen <ak@suse.de>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>,
linux-kernel@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Mitchell Blank Jr <mitch@sfgoth.com>,
"David S. Miller" <davem@davemloft.net>,
rml@novell.com, akpm@osdl.org
Subject: Re: [patch] IBM HDAPS accelerometer driver, with probing.
Date: Sat, 27 Aug 2005 16:56:25 +0200 [thread overview]
Message-ID: <200508271656.26699.ak@suse.de> (raw)
In-Reply-To: <20050827113525.GA27575@mipter.zuzino.mipt.ru>
On Saturday 27 August 2005 13:35, Alexey Dobriyan wrote:
> See? The difference is 64 vs 451 bytes.
Disabling unlikely() doesn't make much difference because the compiler
generates the probability internally then and reorders anyways
(that is why many unlikelys are completely useless
because the default heuristics for them are quite good)
To see a difference you need to compile with -fno-reorder-blocks
-Andi
prev parent reply other threads:[~2005-08-27 14:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-26 22:18 [patch] IBM HDAPS accelerometer driver, with probing Robert Love
2005-08-26 22:44 ` Dmitry Torokhov
2005-08-26 23:37 ` Robert Love
2005-08-27 5:29 ` Arnaldo Carvalho de Melo
2005-08-27 14:45 ` Alan Cox
2005-08-26 22:58 ` Alexey Dobriyan
2005-08-26 23:15 ` David S. Miller
2005-08-27 2:34 ` Andi Kleen
2005-08-27 2:49 ` David S. Miller
2005-08-27 4:06 ` Mitchell Blank Jr
2005-08-27 5:34 ` Arnaldo Carvalho de Melo
2005-08-27 6:12 ` Dmitry Torokhov
2005-08-27 11:35 ` Alexey Dobriyan
2005-08-27 14:56 ` Andi Kleen [this message]
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