From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arun R Bharadwaj Subject: [v8 PATCH 6/8]: POWER: add a default_idle idle loop for POWER. Date: Thu, 8 Oct 2009 15:23:48 +0530 Message-ID: <20091008095348.GG20595@linux.vnet.ibm.com> References: <20091008094828.GA20595@linux.vnet.ibm.com> Reply-To: arun@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20091008094828.GA20595@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@lists.ozlabs.org To: Peter Zijlstra , Benjamin Herrenschmidt , Ingo Molnar , Vaidyanathan Srinivasan , Dipankar Cc: linux-arch@vger.kernel.org, linux-acpi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: linux-acpi@vger.kernel.org * Arun R Bharadwaj [2009-10-08 15:18:28]: In arch/powerpc/kernel/idle.c create a default_idle() routine by moving the failover condition of the cpu_idle() idle loop. This is needed by cpuidle infrastructure to call default_idle when other idle routines are not yet registered. Functionality remains the same, but the code is slightly moved around. Signed-off-by: Arun R Bharadwaj --- arch/powerpc/Kconfig | 3 +++ arch/powerpc/include/asm/system.h | 1 + arch/powerpc/kernel/idle.c | 6 ++++++ 3 files changed, 10 insertions(+) Index: linux.trees.git/arch/powerpc/Kconfig =================================================================== --- linux.trees.git.orig/arch/powerpc/Kconfig +++ linux.trees.git/arch/powerpc/Kconfig @@ -94,6 +94,9 @@ config ARCH_HAS_ILOG2_U64 config ARCH_HAS_CPU_IDLE_WAIT def_bool y +config ARCH_HAS_DEFAULT_IDLE + def_bool y + config GENERIC_HWEIGHT bool default y Index: linux.trees.git/arch/powerpc/include/asm/system.h =================================================================== --- linux.trees.git.orig/arch/powerpc/include/asm/system.h +++ linux.trees.git/arch/powerpc/include/asm/system.h @@ -218,6 +218,7 @@ extern unsigned long klimit; extern void *alloc_maybe_bootmem(size_t size, gfp_t mask); extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); +extern void default_idle(void); extern int powersave_nap; /* set if nap mode can be used in idle loop */ /* Index: linux.trees.git/arch/powerpc/kernel/idle.c =================================================================== --- linux.trees.git.orig/arch/powerpc/kernel/idle.c +++ linux.trees.git/arch/powerpc/kernel/idle.c @@ -113,6 +113,12 @@ void cpu_idle_wait(void) } EXPORT_SYMBOL_GPL(cpu_idle_wait); +void default_idle(void) +{ + HMT_low(); + HMT_very_low(); +} + int powersave_nap; #ifdef CONFIG_SYSCTL From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp01.au.ibm.com ([202.81.31.143]:39584 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757193AbZJHJye (ORCPT ); Thu, 8 Oct 2009 05:54:34 -0400 Date: Thu, 8 Oct 2009 15:23:48 +0530 From: Arun R Bharadwaj Subject: [v8 PATCH 6/8]: POWER: add a default_idle idle loop for POWER. Message-ID: <20091008095348.GG20595@linux.vnet.ibm.com> Reply-To: arun@linux.vnet.ibm.com References: <20091008094828.GA20595@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20091008094828.GA20595@linux.vnet.ibm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Peter Zijlstra , Benjamin Herrenschmidt , Ingo Molnar , Vaidyanathan Srinivasan , Dipankar Sarma , Balbir Singh , Arjan van de Ven , Arun Bharadwaj Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org, linux-acpi@vger.kernel.org Message-ID: <20091008095348.5WrEt6lnyzsfGpkFluevPd6xX9ozXQrWmoB0LNo9SRg@z> * Arun R Bharadwaj [2009-10-08 15:18:28]: In arch/powerpc/kernel/idle.c create a default_idle() routine by moving the failover condition of the cpu_idle() idle loop. This is needed by cpuidle infrastructure to call default_idle when other idle routines are not yet registered. Functionality remains the same, but the code is slightly moved around. Signed-off-by: Arun R Bharadwaj --- arch/powerpc/Kconfig | 3 +++ arch/powerpc/include/asm/system.h | 1 + arch/powerpc/kernel/idle.c | 6 ++++++ 3 files changed, 10 insertions(+) Index: linux.trees.git/arch/powerpc/Kconfig =================================================================== --- linux.trees.git.orig/arch/powerpc/Kconfig +++ linux.trees.git/arch/powerpc/Kconfig @@ -94,6 +94,9 @@ config ARCH_HAS_ILOG2_U64 config ARCH_HAS_CPU_IDLE_WAIT def_bool y +config ARCH_HAS_DEFAULT_IDLE + def_bool y + config GENERIC_HWEIGHT bool default y Index: linux.trees.git/arch/powerpc/include/asm/system.h =================================================================== --- linux.trees.git.orig/arch/powerpc/include/asm/system.h +++ linux.trees.git/arch/powerpc/include/asm/system.h @@ -218,6 +218,7 @@ extern unsigned long klimit; extern void *alloc_maybe_bootmem(size_t size, gfp_t mask); extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); +extern void default_idle(void); extern int powersave_nap; /* set if nap mode can be used in idle loop */ /* Index: linux.trees.git/arch/powerpc/kernel/idle.c =================================================================== --- linux.trees.git.orig/arch/powerpc/kernel/idle.c +++ linux.trees.git/arch/powerpc/kernel/idle.c @@ -113,6 +113,12 @@ void cpu_idle_wait(void) } EXPORT_SYMBOL_GPL(cpu_idle_wait); +void default_idle(void) +{ + HMT_low(); + HMT_very_low(); +} + int powersave_nap; #ifdef CONFIG_SYSCTL From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp02.au.ibm.com (e23smtp02.au.ibm.com [202.81.31.144]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp02.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id AB310B7B84 for ; Thu, 8 Oct 2009 20:53:56 +1100 (EST) Received: from d23relay05.au.ibm.com (d23relay05.au.ibm.com [202.81.31.247]) by e23smtp02.au.ibm.com (8.14.3/8.13.1) with ESMTP id n989pWu8004201 for ; Thu, 8 Oct 2009 20:51:32 +1100 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay05.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n989pPxx1249424 for ; Thu, 8 Oct 2009 20:51:25 +1100 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id n989rrvM019697 for ; Thu, 8 Oct 2009 20:53:54 +1100 Date: Thu, 8 Oct 2009 15:23:48 +0530 From: Arun R Bharadwaj To: Peter Zijlstra , Benjamin Herrenschmidt , Ingo Molnar , Vaidyanathan Srinivasan , Dipankar Sarma , Balbir Singh , Arjan van de Ven , Arun Bharadwaj Subject: [v8 PATCH 6/8]: POWER: add a default_idle idle loop for POWER. Message-ID: <20091008095348.GG20595@linux.vnet.ibm.com> References: <20091008094828.GA20595@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 In-Reply-To: <20091008094828.GA20595@linux.vnet.ibm.com> Cc: linux-arch@vger.kernel.org, linux-acpi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Reply-To: arun@linux.vnet.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , * Arun R Bharadwaj [2009-10-08 15:18:28]: In arch/powerpc/kernel/idle.c create a default_idle() routine by moving the failover condition of the cpu_idle() idle loop. This is needed by cpuidle infrastructure to call default_idle when other idle routines are not yet registered. Functionality remains the same, but the code is slightly moved around. Signed-off-by: Arun R Bharadwaj --- arch/powerpc/Kconfig | 3 +++ arch/powerpc/include/asm/system.h | 1 + arch/powerpc/kernel/idle.c | 6 ++++++ 3 files changed, 10 insertions(+) Index: linux.trees.git/arch/powerpc/Kconfig =================================================================== --- linux.trees.git.orig/arch/powerpc/Kconfig +++ linux.trees.git/arch/powerpc/Kconfig @@ -94,6 +94,9 @@ config ARCH_HAS_ILOG2_U64 config ARCH_HAS_CPU_IDLE_WAIT def_bool y +config ARCH_HAS_DEFAULT_IDLE + def_bool y + config GENERIC_HWEIGHT bool default y Index: linux.trees.git/arch/powerpc/include/asm/system.h =================================================================== --- linux.trees.git.orig/arch/powerpc/include/asm/system.h +++ linux.trees.git/arch/powerpc/include/asm/system.h @@ -218,6 +218,7 @@ extern unsigned long klimit; extern void *alloc_maybe_bootmem(size_t size, gfp_t mask); extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); +extern void default_idle(void); extern int powersave_nap; /* set if nap mode can be used in idle loop */ /* Index: linux.trees.git/arch/powerpc/kernel/idle.c =================================================================== --- linux.trees.git.orig/arch/powerpc/kernel/idle.c +++ linux.trees.git/arch/powerpc/kernel/idle.c @@ -113,6 +113,12 @@ void cpu_idle_wait(void) } EXPORT_SYMBOL_GPL(cpu_idle_wait); +void default_idle(void) +{ + HMT_low(); + HMT_very_low(); +} + int powersave_nap; #ifdef CONFIG_SYSCTL