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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>		20 years ago
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Kconfig	…
Makefile	…
bitblit.c	[PATCH] framebuffer: bit_putcs() optimization for 8x* fonts	20 years ago
dummycon.c	…
fbcon.c	[PATCH] fbcon: Saner 16-color to 4-color conversion	20 years ago
fbcon.h	Linux-2.6.12-rc2	20 years ago
font_6x11.c	…
font_7x14.c	…
font_8x8.c	…
font_8x16.c	…
font_10x18.c	…
font_acorn_8x8.c	…
font_mini_4x6.c	…
font_pearl_8x8.c	…
font_sun8x16.c	…
font_sun12x22.c	…
fonts.c	…
mdacon.c	…
newport_con.c	…
prom.uni	…
promcon.c	…
sticon.c	…
sticore.c	…
tileblit.c	…
vgacon.c	[PATCH] vga text console and stty cols/rows	20 years ago