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Diffstat (limited to 'include/asm-s390/tlbflush.h')
-rw-r--r--include/asm-s390/tlbflush.h36
1 files changed, 23 insertions, 13 deletions
diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
index 35fb4f9127b..9e57a93d7de 100644
--- a/include/asm-s390/tlbflush.h
+++ b/include/asm-s390/tlbflush.h
@@ -13,12 +13,14 @@ static inline void __tlb_flush_local(void)
asm volatile("ptlb" : : : "memory");
}
+#ifdef CONFIG_SMP
/*
* Flush all tlb entries on all cpus.
*/
+void smp_ptlb_all(void);
+
static inline void __tlb_flush_global(void)
{
- extern void smp_ptlb_all(void);
register unsigned long reg2 asm("2");
register unsigned long reg3 asm("3");
register unsigned long reg4 asm("4");
@@ -39,6 +41,25 @@ static inline void __tlb_flush_global(void)
: : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" );
}
+static inline void __tlb_flush_full(struct mm_struct *mm)
+{
+ cpumask_t local_cpumask;
+
+ preempt_disable();
+ /*
+ * If the process only ran on the local cpu, do a local flush.
+ */
+ local_cpumask = cpumask_of_cpu(smp_processor_id());
+ if (cpus_equal(mm->cpu_vm_mask, local_cpumask))
+ __tlb_flush_local();
+ else
+ __tlb_flush_global();
+ preempt_enable();
+}
+#else
+#define __tlb_flush_full(mm) __tlb_flush_local()
+#endif
+
/*
* Flush all tlb entries of a page table on all cpus.
*/
@@ -51,8 +72,6 @@ static inline void __tlb_flush_idte(unsigned long asce)
static inline void __tlb_flush_mm(struct mm_struct * mm)
{
- cpumask_t local_cpumask;
-
if (unlikely(cpus_empty(mm->cpu_vm_mask)))
return;
/*
@@ -69,16 +88,7 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
mm->context.asce_bits);
return;
}
- preempt_disable();
- /*
- * If the process only ran on the local cpu, do a local flush.
- */
- local_cpumask = cpumask_of_cpu(smp_processor_id());
- if (cpus_equal(mm->cpu_vm_mask, local_cpumask))
- __tlb_flush_local();
- else
- __tlb_flush_global();
- preempt_enable();
+ __tlb_flush_full(mm);
}
static inline void __tlb_flush_mm_cond(struct mm_struct * mm)