Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistenton m32r

From: Chris Snook
Date: Wed Aug 22 2007 - 10:07:25 EST


Hirokazu Takata wrote:
I think the parameter of atomic_read() should have "const" qualifier to avoid these warnings, and IMHO this modification might be
worth applying on other archs.

I agree.

Here is an additional patch to revise the previous one for m32r.

I'll incorporate this change if we get enough consensus to justify a re-re-re-submit. Since the patch is intended to be a functional no-op on m32r, I'm inclined to leave it alone at the moment.

I also tried to rewrite it with inline asm code, but the kernel text size
bacame roughly 2kB larger. So, I prefer C version.

You're not the only arch maintainer who prefers doing it in C. If you trust your compiler (a big "if", apparently), inline asm only improves code generation if you have a whole bunch of general purpose registers for the optimizer to play with.

-- Chris
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