On Tue, 2012-01-03 at 16:19 +0200, Gilad Ben-Yossef wrote:

on_each_cpu() returns as its own return value the return value of 
smp_call_function(). smp_call_function() in turn returns a hard 
coded value of zero.

Some callers to on_each_cpu() waste cycles and bloat code space
by checking the return value to on_each_cpu(), probably for 
historical reasons.

hysterical raisins,, yumm! :-)

This patch set refactors callers to not test on_each_cpu()
(fixed) return value and then refactors on_each_cpu to
return void to avoid confusing future users.

Seems sane enough, fwiw:

Acked-by: Peter Zijlstra <redacted>