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authorVineet Gupta <vgupta@synopsys.com>2013-10-27 14:49:02 +0530
committerVineet Gupta <vgupta@synopsys.com>2013-11-06 10:41:45 +0530
commit5ea72a90261552ed5fdca35239feb6cba498301e (patch)
treec83f798813ae867ec10c35be6d2f9c3bc99609b5 /arch/arc/mm
parent63eca94ca206e342bad4a06a86d8e7eda3053a4e (diff)
downloadop-kernel-dev-5ea72a90261552ed5fdca35239feb6cba498301e.zip
op-kernel-dev-5ea72a90261552ed5fdca35239feb6cba498301e.tar.gz
ARC: [SMP] TLB flush
- Add mm_cpumask setting (aggregating only, unlike some other arches) used to restrict the TLB flush cross-calling - cross-calling versions of TLB flush routines (thanks to Noam) Signed-off-by: Noam Camus <noamc@ezchip.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/mm')
-rw-r--r--arch/arc/mm/tlb.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
index db0f0f8..e1acf0c 100644
--- 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
*/
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