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

From: Patrick McHardy <redacted>
Date: Mon, 18 Feb 2008 22:17:27 +0100

The way pr_debug is implemented it still results in two function
calls per packet since the compiler doesn't know that it doesn't
have visible side-effects besides modifying the (unused) buffer.
I confirmed this using codiff.

That's a bug.

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