From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: acpi_idle and max_cpus Date: Fri, 15 Jun 2012 17:28:31 +0200 Message-ID: <4FDB549F.1020002@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:59942 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932138Ab2FOP2c (ORCPT ); Fri, 15 Jun 2012 11:28:32 -0400 Received: by bkcji2 with SMTP id ji2so2507573bkc.19 for ; Fri, 15 Jun 2012 08:28:31 -0700 (PDT) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org, linux-pm@lists.linux-foundation.org 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=3D1. 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. I am wondering is it a bug or an expected behavior ? Thanks -- Daniel --=20 Linaro.org =E2=94=82 Open source software for= ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html