On Mon, 2007-08-27 at 12:54 +0200, Johannes Berg wrote:
> Thanks for this patch though, I'd have done it otherwise.
I had it, it was just a s/EUI48/MAC/ and copy/paste thing.
There are also the arch, drivers/[^net], and net directories
that have a few of these.
The patch also added the missing ")" in drivers/net/82596.c
> I was rereading your original conversion and noticed that it is now
> trivial to make the kernel smaller like you originally wanted by doing
> something like this
>
> -- define this function somewhere --
> print_mac(u8 *mac, char *buf)
> {
> sprintf(buf, "%02x:...", mac[0], mac[1], ...);
> }
> EXPORT_SYMBOL(print_mac)
>
> -- change macros to --
> #define MAC_FMT "%s"
> #define MAC_ARG(a) ({char __buf[18]; print_mac(a, buf); __buf})
>
> I'm not sure we'd want that, but at the time you said it made the kernel
> significantly smaller and I doubt there's a performance problem with it
> (who prints mac addresses regularly?)
The reduction is ~.1% in an allyesconfig.
The compound statement to hide the automatic works well.
The function call is noise compared to the printk.
cheers, Joe
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