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Re: [PATCH] small update for strlen, strnlen, use less cpu instructions

Started byLuke Skywalker <lukes357@gmail.com>
First post2015-06-16 21:00 +0200
Last post2015-06-16 21:10 +0200
Articles 2 — 2 participants

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  Re: [PATCH] small update for strlen, strnlen, use less cpu instructions Luke Skywalker <lukes357@gmail.com> - 2015-06-16 21:00 +0200
    Re: [PATCH] small update for strlen, strnlen, use less cpu  instructions Darth Vader <bp@alien8.de> - 2015-06-16 21:10 +0200

#1166317 — Re: [PATCH] small update for strlen, strnlen, use less cpu instructions

FromLuke Skywalker <lukes357@gmail.com>
Date2015-06-16 21:00 +0200
SubjectRe: [PATCH] small update for strlen, strnlen, use less cpu instructions
Message-ID<pC4fv-2B3-1@gated-at.bofh.it>
> This is not a valid patch submission. Please see
> Documentation/SubmittingPatches.

I resent the patch an hour ago based on that document, thanks for
pointing this out.
I need to know if the patch is in good shape now, thanks

>
> Anyway, why do you think your patch makes strlen() better?
> Now strlen() increments a variable for each character it faces, hence
> it will consume more cycles.

you can look at the output of objdump -d to see why, also the assembly
snippet send by another person make this clear.
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#1166320 — Re: [PATCH] small update for strlen, strnlen, use less cpu instructions

FromDarth Vader <bp@alien8.de>
Date2015-06-16 21:10 +0200
SubjectRe: [PATCH] small update for strlen, strnlen, use less cpu instructions
Message-ID<pC4pc-32i-13@gated-at.bofh.it>
In reply to#1166317
Luke,

On Tue, Jun 16, 2015 at 01:56:52PM -0500, Luke Skywalker wrote:
> > This is not a valid patch submission. Please see
> > Documentation/SubmittingPatches.
> 
> I resent the patch an hour ago based on that document, thanks for
> pointing this out.
> I need to know if the patch is in good shape now, thanks

It is not yet.

Use the force^Wcheckpatch.pl.

> you can look at the output of objdump -d to see why, also the assembly
> snippet send by another person make this clear.

You need to explain that in the commit message, my young padawan.

Then you can join me. Together we can rule the galaxy like father and
son.

Your father,
Darth.

---
Sent from the Death Star.
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