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>

4 files changed, 19 insertions, 18 deletions

diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h
index 5693ab482606..666a73fef28d 100644
--- a/arch/sparc/include/asm/mmu_context_64.h
+++ b/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);
diff --git a/arch/sparc/include/asm/system_32.h b/arch/sparc/include/asm/system_32.h
index 79c1ae2b42a3..751c8c17f5a0 100644
--- a/arch/sparc/include/asm/system_32.h
+++ b/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"                                                         \
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index be1ae37e7733..132d81fb2616 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/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);
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 4e17eec41478..2de937c7232e 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/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);