From 9a27324fde5d67cbadafff8f24ad65c49376f1f0 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Sat, 2 Feb 2019 01:43:16 +0000 Subject: MIPS: mm: Remove redundant drop_mmu_context() cpu argument The drop_mmu_context() function accepts a cpu argument, but it implicitly expects that this is always equal to smp_processor_id() by allocating & configuring an ASID on the local CPU when the mm is active on the CPU indicated by the cpu argument. All callers do provide the value of smp_processor_id() to the cpu argument. Remove the redundant argument and have drop_mmu_context() call smp_processor_id() itself, making it clearer that the cpu variable always represents the local CPU. Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org --- arch/mips/include/asm/mmu_context.h | 4 +++- arch/mips/mm/c-r4k.c | 2 +- arch/mips/mm/tlb-r3k.c | 4 ++-- arch/mips/mm/tlb-r4k.c | 4 ++-- arch/mips/mm/tlb-r8k.c | 4 ++-- 5 files changed, 10 insertions(+), 8 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index 6731fa5ec4b9..dc45690cbbf5 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -174,13 +174,15 @@ static inline void destroy_context(struct mm_struct *mm) * we will get a new one for it. */ static inline void -drop_mmu_context(struct mm_struct *mm, unsigned cpu) +drop_mmu_context(struct mm_struct *mm) { unsigned long flags; + unsigned int cpu; local_irq_save(flags); htw_stop(); + cpu = smp_processor_id(); if (cpumask_test_cpu(cpu, mm_cpumask(mm))) { get_new_mmu_context(mm, cpu); write_c0_entryhi(cpu_asid(cpu, mm)); diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index d0b64df51eb2..1eca2b7e8a28 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -700,7 +700,7 @@ static inline void local_r4k_flush_cache_page(void *args) int cpu = smp_processor_id(); if (cpu_context(cpu, mm) != 0) - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } else vaddr ? r4k_blast_icache_page(addr) : r4k_blast_icache_user_page(addr); diff --git a/arch/mips/mm/tlb-r3k.c b/arch/mips/mm/tlb-r3k.c index 6f589e0112ce..05a5ddccd9da 100644 --- a/arch/mips/mm/tlb-r3k.c +++ b/arch/mips/mm/tlb-r3k.c @@ -75,7 +75,7 @@ void local_flush_tlb_mm(struct mm_struct *mm) #ifdef DEBUG_TLB printk("[tlbmm<%lu>]", (unsigned long)cpu_context(cpu, mm)); #endif - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } } @@ -117,7 +117,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, } write_c0_entryhi(oldpid); } else { - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } local_irq_restore(flags); } diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 0596505770db..6c99dfff71b2 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -115,7 +115,7 @@ void local_flush_tlb_mm(struct mm_struct *mm) cpu = smp_processor_id(); if (cpu_context(cpu, mm) != 0) { - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } preempt_enable(); @@ -163,7 +163,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, write_c0_entryhi(oldpid); htw_start(); } else { - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } flush_micro_tlb(); local_irq_restore(flags); diff --git a/arch/mips/mm/tlb-r8k.c b/arch/mips/mm/tlb-r8k.c index e86e2e55ad3e..20fa35d21776 100644 --- a/arch/mips/mm/tlb-r8k.c +++ b/arch/mips/mm/tlb-r8k.c @@ -55,7 +55,7 @@ void local_flush_tlb_mm(struct mm_struct *mm) int cpu = smp_processor_id(); if (cpu_context(cpu, mm) != 0) - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); } void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, @@ -75,7 +75,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, local_irq_save(flags); if (size > TFP_TLB_SIZE / 2) { - drop_mmu_context(mm, cpu); + drop_mmu_context(mm); goto out_restore; } -- cgit v1.2.3