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Detecting bloatware in the Linux kernel.
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Isomorph
n00b
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Joined: 22 Sep 2002
Posts: 55
Location: Denmark

PostPosted: Mon Sep 09, 2013 3:30 pm    Post subject: Detecting bloatware in the Linux kernel. Reply with quote

Howdy fellow gentooer.

I have been doing a project about finding duplicated code in the Linux kernel.

And I have made an on-line rapport about it, maybe you are interested in the subject.

Here is a link.
http://www.demosophia.net/~shs/projects/detecting-bloatware-in-the-linux-kernel/
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eccerr0r
Watchman
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Joined: 01 Jul 2004
Posts: 7051
Location: almost Mile High in the USA

PostPosted: Mon Sep 09, 2013 3:46 pm    Post subject: Reply with quote

Duplicated code may or may not be bad. Recall that stuff like unrolling loops can (but not always) improve performance - and what is the gist behind unrolling loops? Duplicating code to remove branches.

Though a call/return branch may not be way too expensive anymore, sometimes a duplicated piece of code that removes an interrupt call will save an immense amount of cycles.

YMMV.
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cokey
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Joined: 23 Apr 2004
Posts: 3343

PostPosted: Mon Sep 09, 2013 8:12 pm    Post subject: Reply with quote

take out all the non x86/x86-64 as well, I'd like to know how much smaller the download would be and what the menuconfig would look like
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