ARC: [SMP] TLB flush

[firefly-linux-kernel-4.4.55.git] / arch / arc / mm / tlb.c

diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
index db0f0f82398081c7b9052da1c8229db63ad9f935..e1acf0ce56479d63be92629ad7b7c19c2ddd8950 100644 (file)
--- a/arch/arc/mm/tlb.c
+++ b/arch/arc/mm/tlb.c
@@ -363,6 +363,79 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
        local_irq_restore(flags);
 }
 
+#ifdef CONFIG_SMP
+
+struct tlb_args {
+       struct vm_area_struct *ta_vma;
+       unsigned long ta_start;
+       unsigned long ta_end;
+};
+
+static inline void ipi_flush_tlb_page(void *arg)
+{
+       struct tlb_args *ta = arg;
+
+       local_flush_tlb_page(ta->ta_vma, ta->ta_start);
+}
+
+static inline void ipi_flush_tlb_range(void *arg)
+{
+       struct tlb_args *ta = arg;
+
+       local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
+}
+
+static inline void ipi_flush_tlb_kernel_range(void *arg)
+{
+       struct tlb_args *ta = (struct tlb_args *)arg;
+
+       local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end);
+}
+
+void flush_tlb_all(void)
+{
+       on_each_cpu((smp_call_func_t)local_flush_tlb_all, NULL, 1);
+}
+
+void flush_tlb_mm(struct mm_struct *mm)
+{
+       on_each_cpu_mask(mm_cpumask(mm), (smp_call_func_t)local_flush_tlb_mm,
+                        mm, 1);
+}
+
+void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
+{
+       struct tlb_args ta = {
+               .ta_vma = vma,
+               .ta_start = uaddr
+       };
+
+       on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_page, &ta, 1);
+}
+
+void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+                    unsigned long end)
+{
+       struct tlb_args ta = {
+               .ta_vma = vma,
+               .ta_start = start,
+               .ta_end = end
+       };
+
+       on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range, &ta, 1);
+}
+
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+       struct tlb_args ta = {
+               .ta_start = start,
+               .ta_end = end
+       };
+
+       on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
+}
+#endif
+
 /*
  * Routine to create a TLB entry
  */