Re: Fw: framebuffer blitting performance loss 2.6.12 -> 2.6.13-rc3

Yes, the loop copies each row of a font character.  For an 8x16 font
that's 1 byte. The maximum fontwidth is 32. A 12x22 font does not pass
through this function because the width is not a multiple of 8.  So,
currently, it's used mostly for 8x16 fonts. 

I already know people using 16x30 fonts. There are probably others bigger
than that. 

Of course, we can always use Duff's version to loop-unroll that particular
section, but even at 4 bytes, I don't know if it's worth the effort. Anyone
knows people using 32 wide fonts?

The console system supports up to 32 pixel wide fonts. Even at that 
maximum size we only copy 4 bytes of data at a time. Unrolling the loop 
is right.



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