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SubjectRe: [PATCH] riscv: use the generic string routines
On Mon, Jul 19, 2021 at 1:44 PM Matteo Croce <mcroce@linux.microsoft.com> wrote:
>
> From: Matteo Croce <mcroce@microsoft.com>
>
> Use the generic routines which handle alignment properly.
>
> These are the performances measured on a BeagleV machine for a
> 32 mbyte buffer:
>
> memcpy:
> original aligned: 75 Mb/s
> original unaligned: 75 Mb/s
> new aligned: 114 Mb/s
> new unaligned: 107 Mb/s
>
> memset:
> original aligned: 140 Mb/s
> original unaligned: 140 Mb/s
> new aligned: 241 Mb/s
> new unaligned: 241 Mb/s
>
> TCP throughput with iperf3 gives a similar improvement as well.
>
> This is the binary size increase according to bloat-o-meter:
>
> add/remove: 0/0 grow/shrink: 4/2 up/down: 432/-36 (396)
> Function old new delta
> memcpy 36 324 +288
> memset 32 148 +116
> strlcpy 116 132 +16
> strscpy_pad 84 96 +12
> strlcat 176 164 -12
> memmove 76 52 -24
> Total: Before=1225371, After=1225767, chg +0.03%
>
> Signed-off-by: Matteo Croce <mcroce@microsoft.com>
> Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
> ---

Hi,

can someone have a look at this change and share opinions?

Regards,
--
per aspera ad upstream

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