Date: Tue, 03 Feb 2009 10:54:12 -0800 From: Julian Elischer <julian@elischer.org> To: Martin Cracauer <cracauer@cons.org> Cc: freebsd-smp@freebsd.org Subject: Re: Kernel code: executing once on each CPU? Message-ID: <498892D4.7010501@elischer.org> In-Reply-To: <20090203175728.GA55080@cons.org> References: <20090203175728.GA55080@cons.org>
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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
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