Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932182AbbBBD76 (ORCPT ); Sun, 1 Feb 2015 22:59:58 -0500 Received: from mail-ob0-f182.google.com ([209.85.214.182]:56326 "EHLO mail-ob0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754785AbbBBD7z (ORCPT ); Sun, 1 Feb 2015 22:59:55 -0500 MIME-Version: 1.0 In-Reply-To: <54CEF574.6040404@oracle.com> References: <54CEECF7.7020504@oracle.com> <54CEF123.5050106@oracle.com> <54CEF574.6040404@oracle.com> Date: Mon, 2 Feb 2015 09:29:54 +0530 Message-ID: Subject: Re: [PATCH Resend] cpufreq: Set cpufreq_cpu_data to NULL before putting kobject From: Viresh Kumar To: ethan zhao Cc: Rafael Wysocki , santosh shilimkar , Linaro Kernel Mailman List , "linux-pm@vger.kernel.org" , linux-kernel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 671 Lines: 17 On 2 February 2015 at 09:26, ethan zhao wrote: > How to prevent the policy to be freed between > > cpufreq_cpu_get() and cpufreq_cpu_put() ? kobject_get() increases the reference count of a policy and the policy will only be freed when this is zero. And it will only be zero once all cpufreq_cpu_get() are matched with corresponding cpufreq_cpu_put(). > You are maxing up the water with sand ? :) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/