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Re: [PATCH] net/8021q/vlan_dev.c - Use print_mac

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David Miller wrote:
From: David Miller <davem@xxxxxxxxxxxxx>
Date: Mon, 18 Feb 2008 16:43:05 -0800 (PST)

I think we can fix this easily by using __attribute_const_
on the print_mac() declaration.  Let me play with that.

Actually it seems the 'pure' attribute is more important
here.  Although it's not semantically a perfect match,
what we need to tell the compiler is basically that:

1) the return value depends upon the inputs
2) if the input is not used, it's safe to avoid the call

and 'pure' accomplishes that without any unwanted side-effects.

I think this will not result in any unwanted over-optimization.
Because if the inputs change in any way GCC has to emit the
call.

Any objections?


This seems fine to me, thanks Dave.
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