From: Knut Petersen <Knut_Petersen@t-online.de>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: linux-fbdev-devel@lists.sourceforge.net,
Andrew Morton <akpm@osdl.org>,
"Antonino A. Daplas" <adaplas@gmail.com>,
Linux Kernel Development <linux-kernel@vger.kernel.org>,
Jochen Hein <jochen@jochen.org>
Subject: Re: [PATCH 1/1 2.6.13] framebuffer: bit_putcs() optimization for 8x* fonts
Date: Wed, 31 Aug 2005 00:26:54 +0200 [thread overview]
Message-ID: <4314DD2E.7060901@t-online.de> (raw)
In-Reply-To: <Pine.LNX.4.61.0508302039160.3743@scrub.home>
Hi Roman,
>Could you try the patch below, for a few extra cycles you might want to
>make it an inline function.
>
>
No, it does not help. If there is any difference, it is too small to be
measured on
my system ... and my system does run at 1000 Hz.
After 2.6.12 fb_pad_aligned_buffer() was changed to use memcpy() instead
of a
bytewise copy. That slowed things down a lot, some weeks ago that was
reverted.
fb_pad_aligned _buffer() isn´t that slow, it´s just an external function
to be called
and that means a lot of unnecessary code.
How could I make it an inline function? It is used in console/bitblit.c,
nvidia/nvidia.c,
riva/fbdev.c and softcursor.c.
cu,
Knut
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WARNING: multiple messages have this Message-ID (diff)
From: Knut Petersen <Knut_Petersen@t-online.de>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: linux-fbdev-devel@lists.sourceforge.net,
Andrew Morton <akpm@osdl.org>,
"Antonino A. Daplas" <adaplas@gmail.com>,
Linux Kernel Development <linux-kernel@vger.kernel.org>,
Jochen Hein <jochen@jochen.org>
Subject: Re: [Linux-fbdev-devel] [PATCH 1/1 2.6.13] framebuffer: bit_putcs() optimization for 8x* fonts
Date: Wed, 31 Aug 2005 00:26:54 +0200 [thread overview]
Message-ID: <4314DD2E.7060901@t-online.de> (raw)
In-Reply-To: <Pine.LNX.4.61.0508302039160.3743@scrub.home>
Hi Roman,
>Could you try the patch below, for a few extra cycles you might want to
>make it an inline function.
>
>
No, it does not help. If there is any difference, it is too small to be
measured on
my system ... and my system does run at 1000 Hz.
After 2.6.12 fb_pad_aligned_buffer() was changed to use memcpy() instead
of a
bytewise copy. That slowed things down a lot, some weeks ago that was
reverted.
fb_pad_aligned _buffer() isn´t that slow, it´s just an external function
to be called
and that means a lot of unnecessary code.
How could I make it an inline function? It is used in console/bitblit.c,
nvidia/nvidia.c,
riva/fbdev.c and softcursor.c.
cu,
Knut
next prev parent reply other threads:[~2005-08-30 22:24 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-30 16:15 [PATCH 1/1 2.6.13] framebuffer: bit_putcs() optimization for 8x* fonts Knut Petersen
2005-08-30 16:18 ` Geert Uytterhoeven
2005-08-30 16:18 ` [Linux-fbdev-devel] " Geert Uytterhoeven
2005-08-30 17:58 ` Knut Petersen
2005-08-30 17:58 ` [Linux-fbdev-devel] " Knut Petersen
2005-08-30 19:13 ` Roman Zippel
2005-08-30 19:13 ` [Linux-fbdev-devel] " Roman Zippel
2005-08-30 22:26 ` Knut Petersen [this message]
2005-08-30 22:26 ` Knut Petersen
2005-08-31 0:51 ` Roman Zippel
2005-08-31 6:42 ` Antonino A. Daplas
2005-08-31 15:49 ` Roman Zippel
2005-08-31 15:49 ` [Linux-fbdev-devel] " Roman Zippel
2005-08-31 12:46 ` Knut Petersen
2005-08-31 12:46 ` [Linux-fbdev-devel] " Knut Petersen
2005-08-31 17:15 ` Roman Zippel
2005-08-31 19:19 ` Knut Petersen
2005-08-31 19:19 ` Knut Petersen
2005-08-31 19:34 ` Roman Zippel
2005-08-31 19:52 ` Knut Petersen
2005-08-30 19:59 ` Geert Uytterhoeven
2005-08-30 19:59 ` Geert Uytterhoeven
2005-08-31 1:14 ` Antonino A. Daplas
2005-08-31 1:14 ` Antonino A. Daplas
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