From 65e3443b61a889b02e33537f4bd94efb23c31592 Mon Sep 17 00:00:00 2001 From: Pavel Tatashin Date: Wed, 31 May 2017 11:25:21 -0400 Subject: [PATCH] sparc64: combine activate_mm and switch_mm [ Upstream commit 14d0334c6748ff2aedb3f2f7fdc51ee90a9b54e7 ] The only difference between these two functions is that in activate_mm we unconditionally flush context. However, there is no need to keep this difference after fixing a bug where cpumask was not reset on a wrap. So, in this patch we combine these. Signed-off-by: Pavel Tatashin Reviewed-by: Bob Picco Reviewed-by: Steven Sistare Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- arch/sparc/include/asm/mmu_context_64.h | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h index b84be67..266662a 100644 --- a/arch/sparc/include/asm/mmu_context_64.h +++ b/arch/sparc/include/asm/mmu_context_64.h @@ -131,26 +131,7 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str } #define deactivate_mm(tsk,mm) do { } while (0) - -/* Activate a new MM instance for the current task. */ -static inline void activate_mm(struct mm_struct *active_mm, struct mm_struct *mm) -{ - unsigned long flags; - int cpu; - - spin_lock_irqsave(&mm->context.lock, flags); - if (!CTX_VALID(mm->context)) - get_new_mmu_context(mm); - cpu = smp_processor_id(); - if (!cpumask_test_cpu(cpu, mm_cpumask(mm))) - cpumask_set_cpu(cpu, mm_cpumask(mm)); - - load_secondary_context(mm); - __flush_tlb_mm(CTX_HWBITS(mm->context), SECONDARY_CONTEXT); - tsb_context_switch(mm); - spin_unlock_irqrestore(&mm->context.lock, flags); -} - +#define activate_mm(active_mm, mm) switch_mm(active_mm, mm, NULL) #endif /* !(__ASSEMBLY__) */ #endif /* !(__SPARC64_MMU_CONTEXT_H) */ -- 2.7.4