cpumask: use mm_cpumask() wrapper: arm

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>

6 files changed, 21 insertions, 20 deletions

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 1a711ea8418..fd03fb63a33 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -334,14 +334,14 @@ static inline void outer_flush_range(unsigned long start, unsigned long end)
 #ifndef CONFIG_CPU_CACHE_VIPT
 static inline void flush_cache_mm(struct mm_struct *mm)
 {
-        if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask))
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
                 __cpuc_flush_user_all();
 }
 
 static inline void
 flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
 {
-        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask))
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
                 __cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
                                         vma->vm_flags);
 }
@@ -349,7 +349,7 @@ flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long
 static inline void
 flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
 {
-        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                 unsigned long addr = user_addr & PAGE_MASK;
                 __cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
         }
@@ -360,7 +360,7 @@ flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
                          unsigned long uaddr, void *kaddr,
                          unsigned long len, int write)
 {
-        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                 unsigned long addr = (unsigned long)kaddr;
                 __cpuc_coherent_kern_range(addr, addr + len);
         }
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
index bcdb9291ef0..de6cefb329d 100644
--- a/arch/arm/include/asm/mmu_context.h
+++ b/arch/arm/include/asm/mmu_context.h
@@ -103,14 +103,15 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
 
 #ifdef CONFIG_SMP
         /* check for possible thread migration */
-        if (!cpus_empty(next->cpu_vm_mask) && !cpu_isset(cpu, next->cpu_vm_mask))
+        if (!cpumask_empty(mm_cpumask(next)) &&
+            !cpumask_test_cpu(cpu, mm_cpumask(next)))
                 __flush_icache_all();
 #endif
-        if (!cpu_test_and_set(cpu, next->cpu_vm_mask) || prev != next) {
+        if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) {
                 check_context(next);
                 cpu_switch_mm(next->pgd, next);
                 if (cache_is_vivt())
-                        cpu_clear(cpu, prev->cpu_vm_mask);
+                        cpumask_clear_cpu(cpu, mm_cpumask(prev));
         }
 #endif
 }
diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h
index c964f3fc3bc..a45ab5dd825 100644
--- a/arch/arm/include/asm/tlbflush.h
+++ b/arch/arm/include/asm/tlbflush.h
@@ -350,7 +350,7 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
         if (tlb_flag(TLB_WB))
                 dsb();
 
-        if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask)) {
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm))) {
                 if (tlb_flag(TLB_V3_FULL))
                         asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (zero) : "cc");
                 if (tlb_flag(TLB_V4_U_FULL))
@@ -388,7 +388,7 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
         if (tlb_flag(TLB_WB))
                 dsb();
 
-        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                 if (tlb_flag(TLB_V3_PAGE))
                         asm("mcr p15, 0, %0, c6, c0, 0" : : "r" (uaddr) : "cc");
                 if (tlb_flag(TLB_V4_U_PAGE))
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index de885fd256c..e0d32770bb3 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -189,7 +189,7 @@ int __cpuexit __cpu_disable(void)
         read_lock(&tasklist_lock);
         for_each_process(p) {
                 if (p->mm)
-                        cpu_clear(cpu, p->mm->cpu_vm_mask);
+                        cpumask_clear_cpu(cpu, mm_cpumask(p->mm));
         }
         read_unlock(&tasklist_lock);
 
@@ -257,7 +257,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
         atomic_inc(&mm->mm_users);
         atomic_inc(&mm->mm_count);
         current->active_mm = mm;
-        cpu_set(cpu, mm->cpu_vm_mask);
+        cpumask_set_cpu(cpu, mm_cpumask(mm));
         cpu_switch_mm(mm->pgd, mm);
         enter_lazy_tlb(mm, current);
         local_flush_tlb_all();
@@ -643,7 +643,7 @@ void flush_tlb_all(void)
 void flush_tlb_mm(struct mm_struct *mm)
 {
         if (tlb_ops_need_broadcast())
-                on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, &mm->cpu_vm_mask);
+                on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mm_cpumask(mm));
         else
                 local_flush_tlb_mm(mm);
 }
@@ -654,7 +654,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
                 struct tlb_args ta;
                 ta.ta_vma = vma;
                 ta.ta_start = uaddr;
-                on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+                on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mm_cpumask(vma->vm_mm));
         } else
                 local_flush_tlb_page(vma, uaddr);
 }
@@ -677,7 +677,7 @@ void flush_tlb_range(struct vm_area_struct *vma,
                 ta.ta_vma = vma;
                 ta.ta_start = start;
                 ta.ta_end = end;
-                on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+                on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mm_cpumask(vma->vm_mm));
         } else
                 local_flush_tlb_range(vma, start, end);
 }
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index fc84fcc7438..6bda76a4319 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -59,6 +59,6 @@ void __new_context(struct mm_struct *mm)
         }
         spin_unlock(&cpu_asid_lock);
 
-        mm->cpu_vm_mask = cpumask_of_cpu(smp_processor_id());
+        cpumask_copy(mm_cpumask(mm), cpumask_of(smp_processor_id()));
         mm->context.id = asid;
 }
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 575f3ad722e..b27942909b2 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -50,7 +50,7 @@ static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
 void flush_cache_mm(struct mm_struct *mm)
 {
         if (cache_is_vivt()) {
-                if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask))
+                if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
                         __cpuc_flush_user_all();
                 return;
         }
@@ -73,7 +73,7 @@ void flush_cache_mm(struct mm_struct *mm)
 void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
 {
         if (cache_is_vivt()) {
-                if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask))
+                if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
                         __cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
                                                 vma->vm_flags);
                 return;
@@ -97,7 +97,7 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned
 void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
 {
         if (cache_is_vivt()) {
-                if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+                if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                         unsigned long addr = user_addr & PAGE_MASK;
                         __cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
                 }
@@ -113,7 +113,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
                          unsigned long len, int write)
 {
         if (cache_is_vivt()) {
-                if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+                if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                         unsigned long addr = (unsigned long)kaddr;
                         __cpuc_coherent_kern_range(addr, addr + len);
                 }
@@ -126,7 +126,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
         }
 
         /* VIPT non-aliasing cache */
-        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask) &&
+        if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)) &&
             vma->vm_flags & VM_EXEC) {
                 unsigned long addr = (unsigned long)kaddr;
                 /* only flushing the kernel mapping on non-aliasing VIPT */