From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752292Ab1HJBev (ORCPT ); Tue, 9 Aug 2011 21:34:51 -0400 Received: from na3sys009aog124.obsmtp.com ([74.125.149.151]:55410 "EHLO na3sys009aog124.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750991Ab1HJBeu (ORCPT ); Tue, 9 Aug 2011 21:34:50 -0400 From: Mike Turquette To: linux-kernel@vger.kernel.org Cc: linux-pm@lists.linux-foundation.org, linaro-dev@lists.linaro.org, patches@linaro.org, Mike Turquette Subject: [PATCH 0/2] new cpumask for hotpluggable CPUs Date: Tue, 9 Aug 2011 18:33:25 -0700 Message-Id: <1312940007-26069-1-git-send-email-mturquette@ti.com> X-Mailer: git-send-email 1.7.4.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series introduces a new cpumask which tracks CPUs that support hotplugging. The purpose of this patch series is to provide a simple method for kernel code to know which CPUs can be hotplugged and which ones cannot. Potential users of this code might be a thermal mitigation technique which uses hotplug to lower temperature, or a power capping mechanism which uses hotplug to lower power consumption. All the of usual cpumask helper functions are created for this new mask. The second patch in this series simply sets the bit for elligible CPUs while they are being registered. The cpumask itself is static after boot and should not change (like the possbile mask). Mike Turquette (2): cpumask: introduce cpumask for hotpluggable CPUs cpu: update cpu_hotpluggable_mask in register_cpu drivers/base/cpu.c | 4 +++- include/linux/cpumask.h | 27 ++++++++++++++++++++++----- kernel/cpu.c | 18 ++++++++++++++++++ 3 files changed, 43 insertions(+), 6 deletions(-) -- 1.7.4.1