[RFC] Macro to sum DPCPU vars

John Baldwin jhb at freebsd.org
Thu Jun 10 12:41:44 UTC 2010

On Wednesday 09 June 2010 11:54:53 pm Lawrence Stewart wrote:
> Does anyone have objections to or feedback on the following patch? The 
> macro simplifies the act of calculating an aggregate from DPCPU counters.
> If anyone is curious how you would use it, take a look at:

I think this is fine, though I'm about to make it smaller.  At Robert's 
request I've come up with some macros to iterate over CPUs to abstract out the 
CPU_ABSENT(), etc. bits.  It is at www.freebsd.org/~jhb/patches/cpu_iter.patch  
Using CPU_FOREACH() should try your macro down slightly.

John Baldwin

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