From patchwork Sat Dec 14 05:51:37 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 3345861 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 38EA8C0D4A for ; Sat, 14 Dec 2013 06:23:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 71F2E20783 for ; Sat, 14 Dec 2013 06:23:34 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by mail.kernel.org (Postfix) with ESMTP id A75FD20781 for ; Sat, 14 Dec 2013 06:23:33 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 5BF6A8DE; Sat, 14 Dec 2013 06:23:07 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id D93C88D1 for ; Sat, 14 Dec 2013 06:23:05 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 09B261F942 for ; Sat, 14 Dec 2013 06:23:04 +0000 (UTC) Received: from penelope.isobedori.kobe.vergenet.net (g1-27-253-251-111.bmobile.ne.jp [27.253.251.111]) by kirsty.vergenet.net (Postfix) with ESMTP id AB1F72671B8; Sat, 14 Dec 2013 16:58:13 +1100 (EST) Received: by penelope.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 977FA7C037C; Sat, 14 Dec 2013 14:53:56 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Sat, 14 Dec 2013 14:51:37 +0900 Message-Id: <1387000406-29111-129-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1387000406-29111-1-git-send-email-horms+renesas@verge.net.au> References: <1387000406-29111-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH 128/237] ARM: shmobile: Introduce shmobile_smp_cpu_disable() X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Magnus Damm Introduce the shared CPU Hotplug function shmobile_smp_cpu_disable() for mach-shmobile. It is useful for the case when all CPUs may be hotplugged, including CPU 0. Signed-off-by: Magnus Damm Signed-off-by: Simon Horman (cherry picked from commit 5c4dfcd663b6e96cc20f02dc2c7c315749ea1bc1) Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/include/mach/common.h | 1 + arch/arm/mach-shmobile/platsmp.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index 7b93868..1ed155e 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -13,6 +13,7 @@ extern void shmobile_smp_boot(void); extern void shmobile_smp_sleep(void); extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg); +extern int shmobile_smp_cpu_disable(unsigned int cpu); extern void shmobile_boot_scu(void); extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus); extern int shmobile_smp_scu_boot_secondary(unsigned int cpu, diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c index d4ae616..3741562 100644 --- a/arch/arm/mach-shmobile/platsmp.c +++ b/arch/arm/mach-shmobile/platsmp.c @@ -44,3 +44,10 @@ void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) shmobile_smp_arg[cpu] = arg; flush_cache_all(); } + +#ifdef CONFIG_HOTPLUG_CPU +int shmobile_smp_cpu_disable(unsigned int cpu) +{ + return 0; /* Hotplug of any CPU is supported */ +} +#endif