[PATCH v6 00/46] CPU hotplug: stop_machine()-free CPU hotplug

Srivatsa S. Bhat srivatsa.bhat at linux.vnet.ibm.com
Mon Feb 25 16:45:05 EST 2013

On 02/22/2013 06:01 AM, Rusty Russell wrote:
> "Srivatsa S. Bhat" <srivatsa.bhat at linux.vnet.ibm.com> writes:
>> Hi,
>> This patchset removes CPU hotplug's dependence on stop_machine() from the CPU
>> offline path and provides an alternative (set of APIs) to preempt_disable() to
>> prevent CPUs from going offline, which can be invoked from atomic context.
>> The motivation behind the removal of stop_machine() is to avoid its ill-effects
>> and thus improve the design of CPU hotplug. (More description regarding this
>> is available in the patches).
> If you're doing a v7, please put your benchmark results somewhere!

Oh, I forgot to put them in v6! Thanks for reminding :-)
And yes, I'll have to do a v7 to incorporate changes (if any) to the new code
that went in during this merge window.

> The obvious place is in the 44/46.

Ok, will add it there. Thank you!
Srivatsa S. Bhat

More information about the linux-arm-kernel mailing list