From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arun R Bharadwaj Subject: [v7 PATCH 6/7]: POWER: add a default_idle idle loop for POWER. Date: Tue, 6 Oct 2009 21:04:40 +0530 Message-ID: <20091006153440.GC7343@linux.vnet.ibm.com> References: <20091006152421.GA7278@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: <20091006152421.GA7278@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 , Joel Schopp , Benjamin Herrenschmidt , Paul Mackerras , Ingo Molnar Cc: linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: linux-arch.vger.kernel.org * Arun R Bharadwaj [2009-10-06 20:54:21]: 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 @@ -91,6 +91,9 @@ 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 e28smtp04.in.ibm.com ([59.145.155.4]:33599 "EHLO e28smtp04.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757857AbZJFPfd (ORCPT ); Tue, 6 Oct 2009 11:35:33 -0400 Date: Tue, 6 Oct 2009 21:04:40 +0530 From: Arun R Bharadwaj Subject: [v7 PATCH 6/7]: POWER: add a default_idle idle loop for POWER. Message-ID: <20091006153440.GC7343@linux.vnet.ibm.com> Reply-To: arun@linux.vnet.ibm.com References: <20091006152421.GA7278@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20091006152421.GA7278@linux.vnet.ibm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Peter Zijlstra , Joel Schopp , Benjamin Herrenschmidt , Paul Mackerras , Ingo Molnar , Vaidyanathan Srinivasan , Dipankar Sarma , Balbir Singh , Gautham R Shenoy , Venkatesh Pallipadi , Arun Bharadwaj Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org Message-ID: <20091006153440.rCB3bcuYC5U1DxG_1cW5nGpCSvDC_li90mq1vDn7mBw@z> * Arun R Bharadwaj [2009-10-06 20:54:21]: 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 @@ -91,6 +91,9 @@ 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