From: Andrew Morton <akpm@zip.com.au>
Date: Fri, 12 Jul 2002 15:27:09 -0700
Could you make the counters per-cpu and only add them all up
in the rare case where someone wants to read the stats?
And then change all the drivers ;)
Since spinlocks are held %99 of the time when these counters are
bumped, I'd like to suggest another more sane and space optimized
solution :-)
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