Kernel code: executing once on each CPU?

[Kostik Belousov]

On Tue, Feb 03, 2009 at 12:57:28PM -0500, Martin Cracauer wrote:
> Is there a facility in FreeBSD that allows me to have a piece of code
> executed on each processor, then return to the original thread when
> that has been completed?
> 
> I need to collect some data that's local to the individual CPUs/cores.
> 
> In Linux there is/was smp_call_function(func, ...).

Look at the smp_rendezvous() in the subr_smp.c. Note that the functions
are called in quite restricted context.
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