From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Lezcano <daniel.lezcano@linaro.org>
Subject: Re: acpi_idle and max_cpus
Date: Sun, 17 Jun 2012 22:18:30 +0200
Message-ID: <4FDE3B96.8030306@linaro.org>
References: <4FDB549F.1020002@linaro.org>
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On 06/15/2012 05:28 PM, Daniel Lezcano wrote:
>=20
> Hi all,
>=20
> I have a dual core Intel T9500.
>=20
> I boot the cpu with the acpi_idle driver and intel_idle enabled in th=
e
> config.
>=20
> The kernel is booted with maxcpus=3D1.
>=20
> After the system has boot, I put cpu1 online via sysfs.
>=20
> But I don't see any 'cpuidle' directory in the cpu's sysfs entry:
>=20
> /sys/devices/system/cpu/cpu1/cpuidle (?)
>=20
> 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 calle=
d
> there.
>=20
> I am wondering is it a bug or an expected behavior ?

Any thoughts on that ?

Thanks
  -- Daniel


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