diff options
Diffstat (limited to 'arch/x86/mm/tlb.c')
| -rw-r--r-- | arch/x86/mm/tlb.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 9c5b1f29f3f2..63ac57ef6f92 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -18,7 +18,7 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) = { &init_mm, 0, }; /* - * Smarter SMP flushing macros. + * TLB flushing, formerly SMP-only * c/o Linus Torvalds. * * These mean you can really definitely utterly forget about @@ -31,8 +31,6 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) * Implement flush IPI by CALL_FUNCTION_VECTOR, Alex Shi */ -#ifdef CONFIG_SMP - struct flush_tlb_info { struct mm_struct *flush_mm; unsigned long flush_start; @@ -55,8 +53,6 @@ void leave_mm(int cpu) } EXPORT_SYMBOL_GPL(leave_mm); -#endif /* CONFIG_SMP */ - void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { @@ -73,10 +69,8 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, unsigned cpu = smp_processor_id(); if (likely(prev != next)) { -#ifdef CONFIG_SMP this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK); this_cpu_write(cpu_tlbstate.active_mm, next); -#endif cpumask_set_cpu(cpu, mm_cpumask(next)); /* @@ -115,9 +109,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, /* Load the LDT, if the LDT is different: */ if (unlikely(prev->context.ldt != next->context.ldt)) load_mm_ldt(next); - } -#ifdef CONFIG_SMP - else { + } else { this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK); BUG_ON(this_cpu_read(cpu_tlbstate.active_mm) != next); @@ -142,11 +134,8 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, load_mm_ldt(next); } } -#endif } -#ifdef CONFIG_SMP - /* * The flush IPI assumes that a thread switch happens in this order: * [cpu0: the cpu that switches] @@ -387,5 +376,3 @@ static int __init create_tlb_single_page_flush_ceiling(void) return 0; } late_initcall(create_tlb_single_page_flush_ceiling); - -#endif /* CONFIG_SMP */ |