site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Mail-followup-to: darwin-kernel@lists.apple.com, Paul Litvak <paullitvak@gmail.com>, Michael Smith <drivers@mu.org> User-agent: Mutt/1.4.2.1i On Fri, Nov 17, 2006 at 03:40:54AM -0800, Michael Smith wrote:

Paul Litvak wrote:

...

How would you call a function on all cpus from a kernel extension?

I'm curious; why would you want to do this?

The only reasons I can think of have to do with changing per-CPU (vs. per context) state, and the OS owns all of that state.

For one, I'm guessing this is the mechanism that CHUD tools uses to get the performance counters out of all the CPUs. But I could be wrong. I suppose any other per-CPU state would be fair game - SpeedStep state, thermal state... I can see why some of that might be interesting. -- stix _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com