cpumask: use mm_cpumask() wrapper: sparc

Makes code futureproof against the impending change to mm->cpu_vm_mask.

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

arch/sparc/include/asm/mmu_context_64.h

@@ -121,8 +121,8 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
 	 * local TLB.
 	 */
 	cpu = smp_processor_id();
-	if (!ctx_valid || !cpu_isset(cpu, mm->cpu_vm_mask)) {
-		cpu_set(cpu, mm->cpu_vm_mask);
+	if (!ctx_valid || !cpumask_test_cpu(cpu, mm_cpumask(mm))) {
+		cpumask_set_cpu(cpu, mm_cpumask(mm));
 		__flush_tlb_mm(CTX_HWBITS(mm->context),
 			       SECONDARY_CONTEXT);
 	}
@@ -141,8 +141,8 @@ static inline void activate_mm(struct mm_struct *active_mm, struct mm_struct *mm
 	if (!CTX_VALID(mm->context))
 		get_new_mmu_context(mm);
 	cpu = smp_processor_id();
-	if (!cpu_isset(cpu, mm->cpu_vm_mask))
-		cpu_set(cpu, mm->cpu_vm_mask);
+	if (!cpumask_test_cpu(cpu, mm_cpumask(mm)))
+		cpumask_set_cpu(cpu, mm_cpumask(mm));
 
 	load_secondary_context(mm);
 	__flush_tlb_mm(CTX_HWBITS(mm->context), SECONDARY_CONTEXT);

arch/sparc/include/asm/system_32.h

@@ -126,7 +126,7 @@ extern void flushw_all(void);
 #define switch_to(prev, next, last) do {						\
 	SWITCH_ENTER(prev);								\
 	SWITCH_DO_LAZY_FPU(next);							\
-	cpu_set(smp_processor_id(), next->active_mm->cpu_vm_mask);			\
+	cpumask_set_cpu(smp_processor_id(), mm_cpumask(next->active_mm));		\
 	__asm__ __volatile__(								\
 	"sethi	%%hi(here - 0x8), %%o7\n\t"						\
 	"mov	%%g6, %%g3\n\t"								\

arch/sparc/kernel/smp_32.c

@@ -143,7 +143,7 @@ void smp_flush_tlb_all(void)
 void smp_flush_cache_mm(struct mm_struct *mm)
 {
 	if(mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask))
 			xc1((smpfunc_t) BTFIXUP_CALL(local_flush_cache_mm), (unsigned long) mm);
@@ -154,12 +154,13 @@ void smp_flush_cache_mm(struct mm_struct *mm)
 void smp_flush_tlb_mm(struct mm_struct *mm)
 {
 	if(mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask)) {
 			xc1((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_mm), (unsigned long) mm);
 			if(atomic_read(&mm->mm_users) == 1 && current->active_mm == mm)
-				mm->cpu_vm_mask = cpumask_of_cpu(smp_processor_id());
+				cpumask_copy(mm_cpumask(mm),
+					     cpumask_of(smp_processor_id()));
 		}
 		local_flush_tlb_mm(mm);
 	}
@@ -171,7 +172,7 @@ void smp_flush_cache_range(struct vm_area_struct *vma, unsigned long start,
 	struct mm_struct *mm = vma->vm_mm;
 
 	if (mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask))
 			xc3((smpfunc_t) BTFIXUP_CALL(local_flush_cache_range), (unsigned long) vma, start, end);
@@ -185,7 +186,7 @@ void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	struct mm_struct *mm = vma->vm_mm;
 
 	if (mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask))
 			xc3((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_range), (unsigned long) vma, start, end);
@@ -198,7 +199,7 @@ void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
 	struct mm_struct *mm = vma->vm_mm;
 
 	if(mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask))
 			xc2((smpfunc_t) BTFIXUP_CALL(local_flush_cache_page), (unsigned long) vma, page);
@@ -211,7 +212,7 @@ void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 	struct mm_struct *mm = vma->vm_mm;
 
 	if(mm->context != NO_CONTEXT) {
-		cpumask_t cpu_mask = mm->cpu_vm_mask;
+		cpumask_t cpu_mask = *mm_cpumask(mm);
 		cpu_clear(smp_processor_id(), cpu_mask);
 		if (!cpus_empty(cpu_mask))
 			xc2((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_page), (unsigned long) vma, page);
@@ -240,7 +241,7 @@ void smp_flush_page_to_ram(unsigned long page)
 
 void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
 {
-	cpumask_t cpu_mask = mm->cpu_vm_mask;
+	cpumask_t cpu_mask = *mm_cpumask(mm);
 	cpu_clear(smp_processor_id(), cpu_mask);
 	if (!cpus_empty(cpu_mask))
 		xc2((smpfunc_t) BTFIXUP_CALL(local_flush_sig_insns), (unsigned long) mm, insn_addr);

arch/sparc/kernel/smp_64.c

@@ -850,7 +850,7 @@ static void tsb_sync(void *info)
 
 void smp_tsb_sync(struct mm_struct *mm)
 {
-	smp_call_function_many(&mm->cpu_vm_mask, tsb_sync, mm, 1);
+	smp_call_function_many(mm_cpumask(mm), tsb_sync, mm, 1);
 }
 
 extern unsigned long xcall_flush_tlb_mm;
@@ -1055,13 +1055,13 @@ void smp_flush_tlb_mm(struct mm_struct *mm)
 	int cpu = get_cpu();
 
 	if (atomic_read(&mm->mm_users) == 1) {
-		mm->cpu_vm_mask = cpumask_of_cpu(cpu);
+		cpumask_copy(mm_cpumask(mm), cpumask_of(cpu));
 		goto local_flush_and_out;
 	}
 
 	smp_cross_call_masked(&xcall_flush_tlb_mm,
 			      ctx, 0, 0,
-			      &mm->cpu_vm_mask);
+			      mm_cpumask(mm));
 
 local_flush_and_out:
 	__flush_tlb_mm(ctx, SECONDARY_CONTEXT);
@@ -1075,11 +1075,11 @@ void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long
 	int cpu = get_cpu();
 
 	if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1)
-		mm->cpu_vm_mask = cpumask_of_cpu(cpu);
+		cpumask_copy(mm_cpumask(mm), cpumask_of(cpu));
 	else
 		smp_cross_call_masked(&xcall_flush_tlb_pending,
 				      ctx, nr, (unsigned long) vaddrs,
-				      &mm->cpu_vm_mask);
+				      mm_cpumask(mm));
 
 	__flush_tlb_pending(ctx, nr, vaddrs);