Re: [PATCH] Merge __load_pointer() and load_pointer() in net/core/filter.c; kernel 2.6.14

[Kris Katterjohn]

Forgive me because this is one of my first attempts at anything related to the
kernel, but...

1) How would I go about benchmarking this?
2) If the out-of-line code is executed anyway (since load_pointer() calls __load_pointer()),
would it really effect it very much?

I've been programming as a hobby for a few years, but I never really worried
about inlining my code. Most likely because when I was learning C, I was using
books etc. that were written before C99 was out.

Thanks


----- Original Message -----
From: Herbert Xu [mailto:herbert@xxxxxxxxxxxxxxxxxxx]
Subject: Re: [PATCH] Merge __load_pointer() and load_pointer() in net/core/filter.c; kernel 2.6.14
> Kris Katterjohn <kjak@xxxxxxxxxxx> wrote:
> > I wasn't actually changing it to add performance, but to make the code look
> > cleaner. The new load_pointer() is virtually the same as having the seperate
> > functions that are currently there, but the code, I think, is "better looking".
> > If you look at the current net/core/filter.c and then my patched version, the
> > steps are done in the exact same order and same way, but all in that one
> > function.
> 
> You've just changed an out-of-line function (__load_pointer) into an
> inlined function.  There may be a cost to that.
> -- 
> Visit Openswan at http://www.openswan.org/
> Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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