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c5eb5c1ea9
android_kernel_xiaomi_sm8350/drivers/video
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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