cpumask: Use mm_cpumask() wrapper instead of cpu_vm_mask

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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 39ac22b13c73..7af72970faed 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -132,11 +132,11 @@ void flush_tlb_mm(struct mm_struct *mm)
         pid = mm->context.id;
         if (unlikely(pid == MMU_NO_CONTEXT))
                 goto no_context;
-        cpu_mask = mm->cpu_vm_mask;
-        cpu_clear(smp_processor_id(), cpu_mask);
-        if (!cpus_empty(cpu_mask)) {
+        if (!cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
                 struct tlb_flush_param p = { .pid = pid };
-                smp_call_function_mask(cpu_mask, do_flush_tlb_mm_ipi, &p, 1);
+                /* Ignores smp_processor_id() even if set. */
+                smp_call_function_many(mm_cpumask(mm),
+                                       do_flush_tlb_mm_ipi, &p, 1);
         }
         _tlbil_pid(pid);
  no_context:
@@ -146,16 +146,15 @@ EXPORT_SYMBOL(flush_tlb_mm);
 
 void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
 {
-        cpumask_t cpu_mask;
+        struct cpumask *cpu_mask;
         unsigned int pid;
 
         preempt_disable();
         pid = vma ? vma->vm_mm->context.id : 0;
         if (unlikely(pid == MMU_NO_CONTEXT))
                 goto bail;
-        cpu_mask = vma->vm_mm->cpu_vm_mask;
-        cpu_clear(smp_processor_id(), cpu_mask);
-        if (!cpus_empty(cpu_mask)) {
+        cpu_mask = mm_cpumask(vma->vm_mm);
+        if (!cpumask_equal(cpu_mask, cpumask_of(smp_processor_id()))) {
                 /* If broadcast tlbivax is supported, use it */
                 if (mmu_has_feature(MMU_FTR_USE_TLBIVAX_BCAST)) {
                         int lock = mmu_has_feature(MMU_FTR_LOCK_BCAST_INVAL);
@@ -167,7 +166,8 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
                         goto bail;
                 } else {
                         struct tlb_flush_param p = { .pid = pid, .addr = vmaddr };
-                        smp_call_function_mask(cpu_mask,
+                        /* Ignores smp_processor_id() even if set in cpu_mask */
+                        smp_call_function_many(cpu_mask,
                                                do_flush_tlb_page_ipi, &p, 1);
                 }
         }