From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qhmKv5YJ6zDq6S for ; Sat, 9 Apr 2016 16:16:03 +1000 (AEST) Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 9 Apr 2016 00:16:01 -0600 Received: from b03cxnp08025.gho.boulder.ibm.com (b03cxnp08025.gho.boulder.ibm.com [9.17.130.17]) by d03dlp02.boulder.ibm.com (Postfix) with ESMTP id 1EBCC3E4003F for ; Sat, 9 Apr 2016 00:15:59 -0600 (MDT) Received: from d03av05.boulder.ibm.com (d03av05.boulder.ibm.com [9.17.195.85]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u396FxYV44826700 for ; Fri, 8 Apr 2016 23:15:59 -0700 Received: from d03av05.boulder.ibm.com (localhost [127.0.0.1]) by d03av05.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u396Fw8H031384 for ; Sat, 9 Apr 2016 00:15:58 -0600 From: "Aneesh Kumar K.V" To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" Subject: [PATCH V2 35/68] powerpc/mm: Abstraction for switch_mmu_context Date: Sat, 9 Apr 2016 11:43:31 +0530 Message-Id: <1460182444-2468-36-git-send-email-aneesh.kumar@linux.vnet.ibm.com> In-Reply-To: <1460182444-2468-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1460182444-2468-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/mmu_context.h | 25 +++++++++++++------------ arch/powerpc/kernel/swsusp.c | 2 +- arch/powerpc/mm/mmu_context_nohash.c | 3 ++- drivers/cpufreq/pmac32-cpufreq.c | 2 +- drivers/macintosh/via-pmu.c | 4 ++-- 5 files changed, 19 insertions(+), 17 deletions(-) diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 878c27771717..0dd522ff4559 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -33,16 +33,23 @@ extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem, extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem); extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem); #endif - -extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next); extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm); extern void set_context(unsigned long id, pgd_t *pgd); #ifdef CONFIG_PPC_BOOK3S_64 +static inline void switch_mmu_context(struct mm_struct *prev, + struct mm_struct *next, + struct task_struct *tsk) +{ + return switch_slb(tsk, next); +} + extern int __init_new_context(void); extern void __destroy_context(int context_id); static inline void mmu_context_init(void) { } #else +extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk); extern unsigned long __init_new_context(void); extern void __destroy_context(unsigned long context_id); extern void mmu_context_init(void); @@ -88,17 +95,11 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, if (cpu_has_feature(CPU_FTR_ALTIVEC)) asm volatile ("dssall"); #endif /* CONFIG_ALTIVEC */ - - /* The actual HW switching method differs between the various - * sub architectures. + /* + * The actual HW switching method differs between the various + * sub architectures. Out of line for now */ -#ifdef CONFIG_PPC_STD_MMU_64 - switch_slb(tsk, next); -#else - /* Out of line for now */ - switch_mmu_context(prev, next); -#endif - + switch_mmu_context(prev, next, tsk); } #define deactivate_mm(tsk,mm) do { } while (0) diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c index 6669b1752512..6ae9bd5086a4 100644 --- a/arch/powerpc/kernel/swsusp.c +++ b/arch/powerpc/kernel/swsusp.c @@ -31,6 +31,6 @@ void save_processor_state(void) void restore_processor_state(void) { #ifdef CONFIG_PPC32 - switch_mmu_context(current->active_mm, current->active_mm); + switch_mmu_context(current->active_mm, current->active_mm, NULL); #endif } diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c index 986afbc22c76..a36c43a27893 100644 --- a/arch/powerpc/mm/mmu_context_nohash.c +++ b/arch/powerpc/mm/mmu_context_nohash.c @@ -226,7 +226,8 @@ static void context_check_map(void) static void context_check_map(void) { } #endif -void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next) +void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) { unsigned int i, id, cpu = smp_processor_id(); unsigned long *map; diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index 1f49d97a70ea..bde503c66945 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -298,7 +298,7 @@ static int pmu_set_cpu_speed(int low_speed) _set_L3CR(save_l3cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); #ifdef DEBUG_FREQ printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1)); diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 01ee736fe0ef..f8b6d1403c16 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -1851,7 +1851,7 @@ static int powerbook_sleep_grackle(void) _set_L2CR(save_l2cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); /* Power things up */ pmu_unlock(); @@ -1940,7 +1940,7 @@ powerbook_sleep_Core99(void) _set_L3CR(save_l3cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); /* Tell PMU we are ready */ pmu_unlock(); -- 2.5.0