[S390] allnoconfig build error.
Fix the following link error with allnoconfig:
vmem.c:(.text+0x175c): undefined reference to `smp_ptlb_all'
vmem.c:(.text+0x1b24): undefined reference to `smp_ptlb_all'
fork.c:(.text+0x4190): undefined reference to `smp_ptlb_all'
: undefined reference to `smp_ptlb_all'
: undefined reference to `smp_ptlb_all'
mm/built-in.o:: more undefined references to `smp_ptlb_all' follow
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [sub-make] Error 2
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
index 35fb4f9..de72347 100644
--- a/include/asm-s390/tlbflush.h
+++ b/include/asm-s390/tlbflush.h
@@ -13,6 +13,7 @@
asm volatile("ptlb" : : : "memory");
}
+#ifdef CONFIG_SMP
/*
* Flush all tlb entries on all cpus.
*/
@@ -39,6 +40,25 @@
: : "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 +71,6 @@
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 +87,7 @@
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)