From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935541Ab3E3Q2S (ORCPT ); Thu, 30 May 2013 12:28:18 -0400 Received: from hydra.sisk.pl ([212.160.235.94]:54970 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933985Ab3E3Q2D (ORCPT ); Thu, 30 May 2013 12:28:03 -0400 From: "Rafael J. Wysocki" To: Yinghai Lu Cc: Greg Kroah-Hartman , ACPI Devel Maling List , Linux Kernel Mailing List , Toshi Kani Subject: Re: System slow down from udev Date: Thu, 30 May 2013 18:36:58 +0200 Message-ID: <4462684.QmYxzGRhx8@vostro.rjw.lan> User-Agent: KMail/4.9.5 (Linux/3.10.0-rc3+; KDE/4.9.5; x86_64; ; ) In-Reply-To: <5738208.7rKb57pu5j@vostro.rjw.lan> References: <3463581.AQ3EkyvJ7g@vostro.rjw.lan> <5738208.7rKb57pu5j@vostro.rjw.lan> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, May 30, 2013 04:45:35 PM Rafael J. Wysocki wrote: > On Thursday, May 30, 2013 04:34:51 PM Rafael J. Wysocki wrote: [...] > > > > I'll try to dig deeper locally in the meantime. > > Actually, I think I know what the problem is, but I need some more time to > debug it. Fortunately, I'm able to see some symptoms. :-) OK, one fix is appended, but there still is one more bug I need to investigate. Please check if this one helps, though. Thanks, Rafael --- drivers/acpi/acpi_processor.c | 5 +++++ drivers/acpi/processor_driver.c | 3 --- 2 files changed, 5 insertions(+), 3 deletions(-) Index: linux-pm/drivers/acpi/processor_driver.c =================================================================== --- linux-pm.orig/drivers/acpi/processor_driver.c +++ linux-pm/drivers/acpi/processor_driver.c @@ -78,9 +78,6 @@ static struct device_driver acpi_process .remove = acpi_processor_stop, }; -DEFINE_PER_CPU(struct acpi_processor *, processors); -EXPORT_PER_CPU_SYMBOL(processors); - static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) { struct acpi_device *device = data; Index: linux-pm/drivers/acpi/acpi_processor.c =================================================================== --- linux-pm.orig/drivers/acpi/acpi_processor.c +++ linux-pm/drivers/acpi/acpi_processor.c @@ -29,6 +29,9 @@ ACPI_MODULE_NAME("processor"); +DEFINE_PER_CPU(struct acpi_processor *, processors); +EXPORT_PER_CPU_SYMBOL(processors); + /* -------------------------------------------------------------------------- Errata Handling -------------------------------------------------------------------------- */ @@ -387,6 +390,7 @@ static int __cpuinit acpi_processor_add( * checks. */ per_cpu(processor_device_array, pr->id) = device; + per_cpu(processors, pr->id) = pr; dev = get_cpu_device(pr->id); result = acpi_bind_one(dev, pr->handle); @@ -406,6 +410,7 @@ static int __cpuinit acpi_processor_add( err: free_cpumask_var(pr->throttling.shared_cpu_map); device->driver_data = NULL; + per_cpu(processors, pr->id) = NULL; err_free_pr: kfree(pr); return result;