Kernel code: executing once on each CPU?

[Julian Elischer]

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, ...).

no, though it might  be useful.

the rmlock facility does this in order to do its work (from memory)
and it would be a useful thing..
I'd even suggest that it take a bitmask of required CPUs.
that can be used in conjuction with the cpu set stuff.


> 
> Martin