Knut Petersen c5eb5c1ea9 [PATCH] framebuffer: bit_putcs() optimization for 8x* fonts ...

This trivial patch gives a performance boost to the framebuffer console

Constructing the bitmaps that are given to the bitblit functions of the
framebuffer drivers is time consuming.  Here we avoide a call to the slow
fb_pad_aligned_buffer().  The patch replaces that call with a simple but
much more efficient bytewise copy.

The kernel spends a significant time at this place if you use 8x* fonts.
Every pixel displayed on your screen is prepared here.

Some benchmark results:

Displaying a file of 2000 lines with 160 characters each takes 889 ms
system time using cyblafb on my system (I´m using a 1280x1024 video mode,
resulting in a 160x64 character console)

Displaying the same file with the enclosed patch applied to 2.6.13 only
takes 760 ms system time, saving 129 ms or 14.5%.

Font widths other than 8 are not affected.

The advantage and correctness of this patch should be obvious.

Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2005-09-09 13:58:02 -07:00

..

aty

[PATCH] atyfb: Remove code that sets sync polarity unconditionally

2005-09-09 13:58:00 -07:00

backlight

[PATCH] Support powering sharp zaurus sl-5500 LCD up and down

2005-09-07 16:57:20 -07:00

console

[PATCH] framebuffer: bit_putcs() optimization for 8x* fonts

2005-09-09 13:58:02 -07:00

geode

[PATCH] fbdev: geode updates

2005-09-09 13:57:59 -07:00

i810

[PATCH] fbdev: prevent drivers that have hardware cursors from calling software cursor code

2005-09-09 13:57:59 -07:00

intelfb

[PATCH] fbdev: prevent drivers that have hardware cursors from calling software cursor code

2005-09-09 13:57:59 -07:00

kyro

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

logo

[PATCH] m32r: framebuffer device support

2005-07-07 18:24:11 -07:00

matrox

[PATCH] matroxfb: read MGA PInS data on PowerPC

2005-09-09 13:58:01 -07:00

nvidia

[PATCH] fbdev: Fix greater than 1 bit monochrome color handling

2005-09-09 13:58:00 -07:00

riva

[PATCH] PCI: remove CONFIG_PCI_NAMES

2005-09-08 14:57:23 -07:00

savage

[PATCH] better error handing in savagefb_probe

2005-09-09 13:58:01 -07:00

sis

[PATCH] sisfb update

2005-09-09 13:58:01 -07:00

68328fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

acornfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

acornfb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

amba-clcd.c

[PATCH] ARM: IntegratorCP: 16bpp is RGB565 not RGB555

2005-04-30 23:28:47 +01:00

amifb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

arcfb.c

[PATCH] Framebuffer driver for Arc LCD board

2005-06-21 19:07:41 -07:00

asiliantfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

atafb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

au1100fb.c

[PATCH] au1100fb: convert to C99 inits.

2005-06-25 16:24:57 -07:00

au1100fb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bt431.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bt455.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

bw2.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

c2p.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

c2p.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cfbcopyarea.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cfbfillrect.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cfbimgblt.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cg3.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cg6.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cg14.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

chipsfb.c

[PATCH] swsusp: switch pm_message_t to struct

2005-09-05 00:06:16 -07:00

cirrusfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

clps711xfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

controlfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

controlfb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cyber2000fb.c

[PATCH] ARM: Cleanup kmalloc in cyber2000fb

2005-05-03 12:23:56 +01:00

cyber2000fb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cyberfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cyberfb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

cyblafb.c

[PATCH] framebuffer: new driver for cyberblade/i1 graphics core

2005-09-09 13:58:02 -07:00

dnfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

edid.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

epson1355fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fbcmap.c

[PATCH] fbdev: update info->cmap when setting cmap from user-/kernelspace.

2005-07-27 16:26:19 -07:00

fbmem.c

[PATCH] fbdev: Fix greater than 1 bit monochrome color handling

2005-09-09 13:58:00 -07:00

fbmon.c

[PATCH] fbdev: Resurrect hooks to get EDID from firmware

2005-09-09 13:57:59 -07:00

fbsysfs.c

[PATCH] Display name of fbdev device

2005-07-31 12:50:46 -07:00

ffb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fm2fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

g364fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

gbefb.c

[PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks

2005-06-20 15:15:35 -07:00

hgafb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

hitfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

hpfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

igafb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

imsttfb.c

[PATCH] imsttfb missing iomem annotations

2005-04-26 07:43:42 -07:00

imxfb.c

[PATCH] ARM: 2687/1: i.MX framebuffer: make dmacr register platform configurable

2005-07-17 20:15:36 +01:00

imxfb.h

[PATCH] ARM: 2687/1: i.MX framebuffer: make dmacr register platform configurable

2005-07-17 20:15:36 +01:00

Kconfig

[PATCH] framebuffer: new driver for cyberblade/i1 graphics core

2005-09-09 13:58:02 -07:00

leo.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

macfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

macmodes.c

[PATCH] macmodes: needs a license

2005-06-14 07:19:35 -07:00

macmodes.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

Makefile

[PATCH] framebuffer: new driver for cyberblade/i1 graphics core

2005-09-09 13:58:02 -07:00

maxinefb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

modedb.c

[PATCH] nvidiafb: Fix initial display corruption on certain laptops

2005-08-08 11:46:24 -07:00

neofb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

offb.c

[PATCH] Separate pci bits out of struct device_node

2005-09-09 22:11:38 +10:00

p9100.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

platinumfb.c

[PATCH] openfirmware: generate device table for userspace

2005-07-06 12:55:20 -07:00

platinumfb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pm2fb.c

[PATCH] clean up inline static vs static inline

2005-07-27 16:26:20 -07:00

pm3fb.c

[PATCH] pm3fb typo fix

2005-06-21 19:07:40 -07:00

pmag-aa-fb.c

[PATCH] DEC PMAG AA framebuffer update

2005-09-05 00:06:03 -07:00

pmag-ba-fb.c

[PATCH] DEC PMAG BA frame buffer update

2005-09-05 00:06:03 -07:00

pmagb-b-fb.c

[PATCH] DEC PMAGB B framebuffer update

2005-09-05 00:06:03 -07:00

pvr2fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

pxafb.c

[PATCH] ARM: 2846/1: proper handling of CKEN for pxafb

2005-08-10 16:45:13 +01:00

pxafb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

q40fb.c

[PATCH] Remove non-arch consumers of asm/segment.h

2005-09-07 16:57:34 -07:00

radeonfb.c

[PATCH] disable debug info in radeonfb old driver

2005-08-18 12:53:57 -07:00

retz3fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

retz3fb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

s1d13xxxfb.c

[PATCH] swsusp: fix remaining u32 vs. pm_message_t confusion

2005-09-05 00:06:15 -07:00

S3triofb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sa1100fb.c

[PATCH] ARM: Make sa1100fb_display_dma_period() an inline function

2005-08-07 14:20:26 +01:00

sa1100fb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sbuslib.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sbuslib.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sgivwfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

skeletonfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

softcursor.c

[PATCH] fbdev: stack reduction

2005-06-21 19:07:41 -07:00

sstfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sticore.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

stifb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

sun3fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

tcx.c

[SPARC]: TCX Framebuffer fixes

2005-04-24 20:39:15 -07:00

tdfxfb.c

[PATCH] Clean-up and bug fix for tdfxfb framebuffer size detection

2005-05-01 08:59:25 -07:00

tgafb.c

[PATCH] Fix tgafb.c compile failure

2005-04-21 14:09:42 -07:00

tridentfb.c

[PATCH] framebuffer: new driver for cyberblade/i1 graphics core

2005-09-09 13:58:02 -07:00

tx3912fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

valkyriefb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

valkyriefb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vesafb.c

[PATCH] vesafb: Add blanking support

2005-09-09 13:57:58 -07:00

vfb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vga16fb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

vgastate.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

virgefb.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

virgefb.h

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

w100fb.c

[PATCH] w100fb: Rewrite for platform independence

2005-09-07 16:57:53 -07:00

w100fb.h

[PATCH] w100fb: Rewrite for platform independence

2005-09-07 16:57:53 -07:00