X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fsmp.c;fp=arch%2Fmips%2Fkernel%2Fsmp.c;h=221895802dca8eecd1be9e374173f4f1522facaa;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=298f82fe8440a43d1a8140ed8a256d44595ed6d8;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 298f82fe8..221895802 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -318,6 +318,32 @@ static void flush_tlb_mm_ipi(void *mm)
 	local_flush_tlb_mm((struct mm_struct *)mm);
 }
 
+/*
+ * Special Variant of smp_call_function for use by TLB functions:
+ *
+ *  o No return value
+ *  o collapses to normal function call on UP kernels
+ *  o collapses to normal function call on systems with a single shared
+ *    primary cache.
+ *  o CONFIG_MIPS_MT_SMTC currently implies there is only one physical core.
+ */
+static inline void smp_on_other_tlbs(void (*func) (void *info), void *info)
+{
+#ifndef CONFIG_MIPS_MT_SMTC
+	smp_call_function(func, info, 1, 1);
+#endif
+}
+
+static inline void smp_on_each_tlb(void (*func) (void *info), void *info)
+{
+	preempt_disable();
+
+	smp_on_other_tlbs(func, info);
+	func(info);
+
+	preempt_enable();
+}
+
 /*
  * The following tlb flush calls are invoked when old translations are
  * being torn down, or pte attributes are changing. For single threaded
@@ -336,7 +362,7 @@ void flush_tlb_mm(struct mm_struct *mm)
 	preempt_disable();
 
 	if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
-		smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1, 1);
+		smp_on_other_tlbs(flush_tlb_mm_ipi, (void *)mm);
 	} else {
 		int i;
 		for (i = 0; i < num_online_cpus(); i++)
@@ -372,7 +398,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l
 		fd.vma = vma;
 		fd.addr1 = start;
 		fd.addr2 = end;
-		smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1, 1);
+		smp_on_other_tlbs(flush_tlb_range_ipi, (void *)&fd);
 	} else {
 		int i;
 		for (i = 0; i < num_online_cpus(); i++)
@@ -414,7 +440,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 
 		fd.vma = vma;
 		fd.addr1 = page;
-		smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1, 1);
+		smp_on_other_tlbs(flush_tlb_page_ipi, (void *)&fd);
 	} else {
 		int i;
 		for (i = 0; i < num_online_cpus(); i++)
@@ -434,8 +460,7 @@ static void flush_tlb_one_ipi(void *info)
 
 void flush_tlb_one(unsigned long vaddr)
 {
-	smp_call_function(flush_tlb_one_ipi, (void *) vaddr, 1, 1);
-	local_flush_tlb_one(vaddr);
+	smp_on_each_tlb(flush_tlb_one_ipi, (void *) vaddr);
 }
 
 static DEFINE_PER_CPU(struct cpu, cpu_devices);
@@ -446,7 +471,7 @@ static int __init topology_init(void)
 	int ret;
 
 	for_each_present_cpu(cpu) {
-		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
 		if (ret)
 			printk(KERN_WARNING "topology_init: register_cpu %d "
 			       "failed (%d)\n", cpu, ret);