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SubjectRe: [PATCH] m68k: Unroll raw_outsb() loop
On Sat, Oct 13, 2018 at 3:10 AM Finn Thain <> wrote:
> Unroll the raw_outsb() loop using the optimized assembler code from
> raw_outsw(). That code is copied and pasted, with movew changed to moveb.
> This improves the performance of sequential write transfers using mac_esp
> in PIO mode by 5% or 10%. (The DMA controller on the 840av/660av models is
> still unsupported so PIO transfers are used.)
> Tested-by: Stan Johnson <>
> Signed-off-by: Finn Thain <>

Reviewed-by: Geert Uytterhoeven <>
I.e., applied and queued for v4.21.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 --

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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