On Sun, 4 Nov 2007, Mindaugas Rasiukevicius wrote:
> Log Message:
> - Migrate all threads when the state of CPU is changed to offline;
> - Fix inverted logic with r_mcount in M2;
> - setrunnable: perform sched_takecpu() when making the LWP runnable;
> - setrunnable: l_mutex cannot be spc_mutex here;
>
> This makes cpuctl(8) work with SCHED_M2.

On amd64 with the standard scheduler, 'cpuctl offline 1' now causes my 
machine to lock solid.

Cheers,
Jared