[PATCH] cpumask: use mm_cpumask() wrapper: powerpc
Rusty Russell
rusty at rustcorp.com.au
Mon Mar 16 15:16:43 EST 2009
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 at rustcorp.com.au>
---
arch/powerpc/include/asm/mmu_context.h | 2 +-
arch/powerpc/mm/hash_utils_64.c | 10 ++++------
arch/powerpc/mm/mmu_context_nohash.c | 2 +-
arch/powerpc/mm/pgtable.c | 3 +--
arch/powerpc/mm/tlb_hash64.c | 6 +++---
arch/powerpc/mm/tlb_nohash.c | 18 +++++++++---------
arch/powerpc/platforms/cell/spu_base.c | 2 +-
7 files changed, 20 insertions(+), 23 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -31,7 +31,7 @@ static inline void switch_mm(struct mm_s
struct task_struct *tsk)
{
/* Mark this context has been used on the new CPU */
- cpu_set(smp_processor_id(), next->cpu_vm_mask);
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
/* 32-bit keeps track of the current PGDIR in the thread struct */
#ifdef CONFIG_PPC32
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -858,7 +858,7 @@ int hash_page(unsigned long ea, unsigned
unsigned long vsid;
struct mm_struct *mm;
pte_t *ptep;
- cpumask_t tmp;
+ const struct cpumask *tmp;
int rc, user_region = 0, local = 0;
int psize, ssize;
@@ -906,8 +906,8 @@ int hash_page(unsigned long ea, unsigned
return 1;
/* Check CPU locality */
- tmp = cpumask_of_cpu(smp_processor_id());
- if (user_region && cpus_equal(mm->cpu_vm_mask, tmp))
+ tmp = cpumask_of(smp_processor_id());
+ if (user_region && cpumask_equal(mm_cpumask(mm), tmp))
local = 1;
#ifdef CONFIG_HUGETLB_PAGE
@@ -1023,7 +1023,6 @@ void hash_preload(struct mm_struct *mm,
unsigned long vsid;
void *pgdir;
pte_t *ptep;
- cpumask_t mask;
unsigned long flags;
int local = 0;
int ssize;
@@ -1066,8 +1065,7 @@ void hash_preload(struct mm_struct *mm,
local_irq_save(flags);
/* Is that local to this CPU ? */
- mask = cpumask_of_cpu(smp_processor_id());
- if (cpus_equal(mm->cpu_vm_mask, mask))
+ if (cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id())))
local = 1;
/* Hash it in */
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -97,7 +97,7 @@ static unsigned int steal_context_smp(un
mm->context.id = MMU_NO_CONTEXT;
/* Mark it stale on all CPUs that used this mm */
- for_each_cpu_mask_nr(cpu, mm->cpu_vm_mask)
+ for_each_cpu(cpu, mm_cpumask(mm))
__set_bit(id, stale_map[cpu]);
return id;
}
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -81,11 +81,10 @@ void pgtable_free_tlb(struct mmu_gather
void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf)
{
/* This is safe since tlb_gather_mmu has disabled preemption */
- cpumask_t local_cpumask = cpumask_of_cpu(smp_processor_id());
struct pte_freelist_batch **batchp = &__get_cpu_var(pte_freelist_cur);
if (atomic_read(&tlb->mm->mm_users) < 2 ||
- cpus_equal(tlb->mm->cpu_vm_mask, local_cpumask)) {
+ cpumask_equal(mm_cpumask(tlb->mm), cpumask_of(smp_processor_id()))){
pgtable_free(pgf);
return;
}
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -139,12 +139,12 @@ void hpte_need_flush(struct mm_struct *m
*/
void __flush_tlb_pending(struct ppc64_tlb_batch *batch)
{
- cpumask_t tmp;
+ const struct cpumask *tmp;
int i, local = 0;
i = batch->index;
- tmp = cpumask_of_cpu(smp_processor_id());
- if (cpus_equal(batch->mm->cpu_vm_mask, tmp))
+ tmp = cpumask_of(smp_processor_id());
+ if (cpumask_equal(mm_cpumask(batch->mm), tmp))
local = 1;
if (i == 1)
flush_hash_page(batch->vaddr[0], batch->pte[0],
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
--- 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_struc
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);
}
}
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -114,7 +114,7 @@ static inline void mm_needs_global_tlbie
int nr = (NR_CPUS > 1) ? NR_CPUS : NR_CPUS + 1;
/* Global TLBIE broadcast required with SPEs. */
- __cpus_setall(&mm->cpu_vm_mask, nr);
+ bitmap_fill(cpumask_bits(mm_cpumask(mm)), nr);
}
void spu_associate_mm(struct spu *spu, struct mm_struct *mm)
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