Hi Daniel,

On 06/18/2012 01:48 AM, Daniel Lezcano wrote:

On 06/15/2012 05:28 PM, Daniel Lezcano wrote:

quoted

Hi all,

I have a dual core Intel T9500.

I boot the cpu with the acpi_idle driver and intel_idle enabled in the
config.

The kernel is booted with maxcpus=1.

After the system has boot, I put cpu1 online via sysfs.

But I don't see any 'cpuidle' directory in the cpu's sysfs entry:

/sys/devices/system/cpu/cpu1/cpuidle (?)

When I look at the code I see the notifier is present for hotplug in
processor_driver.c and the cpuidle intel init routine should be called
there.

Yes, we have a hotplug notifier.
Commit 99b72508  by Thomas Renninger fixed this issue.

Please let me know which kernel version you are running and what is idle
driver registered ?

quoted

I am wondering is it a bug or an expected behavior ?

Any thoughts on that ?

Thanks
  -- Daniel

Cheers
Deepthi