From: Alan Cox <alan@redhat.com>
To: Andy Walls <awalls@radix.net>
Cc: Alan Cox <alan@redhat.com>,
video4linux-list@redhat.com,
Discussion list for development of the IVTV driver
<ivtv-devel@ivtvdriver.org>
Subject: Re: [ivtv-devel] [PATCH] cx18: convert driver to video_ioctl2() (Re: [PATCH] video4linux: Push down the BKL)
Date: Wed, 4 Jun 2008 06:02:13 -0400 [thread overview]
Message-ID: <20080604100213.GB30924@devserv.devel.redhat.com> (raw)
In-Reply-To: <1212540270.3177.46.camel@palomino.walls.org>
On Tue, Jun 03, 2008 at 08:44:30PM -0400, Andy Walls wrote:
> For the record, every pointer store looks something like this (before
> relocations) on 64-bit:
>
> 1f9: 48 c7 87 c0 04 00 00 movq $0x0,0x4c0(%rdi)
> 200: 00 00 00 00
>
> 11 bytes * 19 NULL pointer stores = 209 bytes + wasted CPU cycles.
Static objects don't get stored at init.. they are either in the data
segment (older compilers) or BSS (smarter ones)
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next prev parent reply other threads:[~2008-06-04 10:02 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-22 21:37 [PATCH] video4linux: Push down the BKL Alan Cox
2008-05-23 2:08 ` Andy Walls
2008-05-23 6:16 ` Hans Verkuil
2008-05-23 6:28 ` Hans Verkuil
2008-05-26 16:39 ` Mauro Carvalho Chehab
2008-05-23 9:09 ` Alan Cox
2008-05-26 16:34 ` Mauro Carvalho Chehab
2008-05-26 16:46 ` Hans Verkuil
2008-05-26 21:14 ` Mauro Carvalho Chehab
2008-06-01 2:34 ` [PATCH] cx18: convert driver to video_ioctl2() (Re: [PATCH] video4linux: Push down the BKL) Andy Walls
2008-06-01 10:15 ` Hans Verkuil
2008-06-01 19:01 ` Andy Walls
2008-06-03 21:20 ` Mauro Carvalho Chehab
2008-06-03 22:08 ` [ivtv-devel] " Alan Cox
2008-06-04 0:44 ` Andy Walls
2008-06-04 10:02 ` Alan Cox [this message]
[not found] ` <9027.1211551014@vena.lwn.net>
2008-05-23 15:39 ` [PATCH] video4linux: Push down the BKL Alan Cox
[not found] ` <15168.1211558968@vena.lwn.net>
2008-05-23 18:58 ` Alan Cox
2008-05-23 19:05 ` Hans Verkuil
2008-05-25 23:46 ` Mike Isely
2008-05-26 16:59 ` Mauro Carvalho Chehab
2008-05-26 20:23 ` Alan Cox
2008-05-26 21:10 ` Mauro Carvalho Chehab
2008-05-26 22:01 ` Alan Cox
2008-05-27 13:10 ` Mauro Carvalho Chehab
[not found] ` <20080527094144.1189826a@bike.lwn.net>
2008-05-27 16:31 ` Mauro Carvalho Chehab
2008-05-27 18:14 ` Alan Cox
[not found] ` <20080527103755.1fd67ec1@bike.lwn.net>
2008-05-27 18:59 ` Mauro Carvalho Chehab
2008-05-27 19:26 ` Devin Heitmueller
2008-05-27 21:00 ` Mauro Carvalho Chehab
2008-05-27 21:22 ` Devin Heitmueller
2008-05-27 23:48 ` Andy Walls
2008-05-28 0:46 ` Devin Heitmueller
2008-05-28 2:37 ` Andy Walls
2008-05-28 2:47 ` Devin Heitmueller
2008-05-28 23:30 ` Andy Walls
2008-05-28 8:34 ` Alan Cox
2008-05-28 6:13 ` Hans Verkuil
[not found] ` <20080527125041.0fc28fd4@infradead.org>
2008-05-27 20:24 ` Mauro Carvalho Chehab
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