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mm: replace __get_cpu_var uses with this_cpu_ptr

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Replace places where __get_cpu_var() is used for an address calculation
with this_cpu_ptr().

Signed-off-by: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Lameter 2014-06-04 16:07:56 -07:00 committed by Linus Torvalds
parent dc6f6c97f1
commit 7c8e0181e6
9 changed files with 15 additions and 15 deletions
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6
lib/radix-tree.c
View File

@ -194,7 +194,7 @@ radix_tree_node_alloc(struct radix_tree_root *root)
* succeed in getting a node here (and never reach
* kmem_cache_alloc)
*/
rtp = &__get_cpu_var(radix_tree_preloads);
rtp = this_cpu_ptr(&radix_tree_preloads);
if (rtp->nr) {
ret = rtp->nodes[rtp->nr - 1];
rtp->nodes[rtp->nr - 1] = NULL;
@ -250,14 +250,14 @@ static int __radix_tree_preload(gfp_t gfp_mask)
int ret = -ENOMEM;
preempt_disable();
rtp = &__get_cpu_var(radix_tree_preloads);
rtp = this_cpu_ptr(&radix_tree_preloads);
while (rtp->nr < ARRAY_SIZE(rtp->nodes)) {
preempt_enable();
node = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);
if (node == NULL)
goto out;
preempt_disable();
rtp = &__get_cpu_var(radix_tree_preloads);
rtp = this_cpu_ptr(&radix_tree_preloads);
if (rtp->nr < ARRAY_SIZE(rtp->nodes))
rtp->nodes[rtp->nr++] = node;
else

2
mm/memcontrol.c
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@ -2436,7 +2436,7 @@ static void drain_stock(struct memcg_stock_pcp *stock)
*/
static void drain_local_stock(struct work_struct *dummy)
{
struct memcg_stock_pcp *stock = &__get_cpu_var(memcg_stock);
struct memcg_stock_pcp *stock = this_cpu_ptr(&memcg_stock);
drain_stock(stock);
clear_bit(FLUSHING_CACHED_CHARGE, &stock->flags);
}

2
mm/memory-failure.c
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@ -1298,7 +1298,7 @@ static void memory_failure_work_func(struct work_struct *work)
unsigned long proc_flags;
int gotten;
mf_cpu = &__get_cpu_var(memory_failure_cpu);
mf_cpu = this_cpu_ptr(&memory_failure_cpu);
for (;;) {
spin_lock_irqsave(&mf_cpu->lock, proc_flags);
gotten = kfifo_get(&mf_cpu->fifo, &entry);

4
mm/page-writeback.c
View File

@ -1623,7 +1623,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping)
* 1000+ tasks, all of them start dirtying pages at exactly the same
* time, hence all honoured too large initial task->nr_dirtied_pause.
*/
p = &__get_cpu_var(bdp_ratelimits);
p = this_cpu_ptr(&bdp_ratelimits);
if (unlikely(current->nr_dirtied >= ratelimit))
*p = 0;
else if (unlikely(*p >= ratelimit_pages)) {
@ -1635,7 +1635,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping)
* short-lived tasks (eg. gcc invocations in a kernel build) escaping
* the dirty throttling and livelock other long-run dirtiers.
*/
p = &__get_cpu_var(dirty_throttle_leaks);
p = this_cpu_ptr(&dirty_throttle_leaks);
if (*p > 0 && current->nr_dirtied < ratelimit) {
unsigned long nr_pages_dirtied;
nr_pages_dirtied = min(*p, ratelimit - current->nr_dirtied);

6
mm/slub.c
View File

@ -2209,7 +2209,7 @@ static inline void *new_slab_objects(struct kmem_cache *s, gfp_t flags,
page = new_slab(s, flags, node);
if (page) {
c = __this_cpu_ptr(s->cpu_slab);
c = raw_cpu_ptr(s->cpu_slab);
if (c->page)
flush_slab(s, c);
@ -2425,7 +2425,7 @@ static __always_inline void *slab_alloc_node(struct kmem_cache *s,
* and the retrieval of the tid.
*/
preempt_disable();
c = __this_cpu_ptr(s->cpu_slab);
c = this_cpu_ptr(s->cpu_slab);
/*
* The transaction ids are globally unique per cpu and per operation on
@ -2681,7 +2681,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
* during the cmpxchg then the free will succedd.
*/
preempt_disable();
c = __this_cpu_ptr(s->cpu_slab);
c = this_cpu_ptr(s->cpu_slab);
tid = c->tid;
preempt_enable();

2
mm/swap.c
View File

@ -441,7 +441,7 @@ void rotate_reclaimable_page(struct page *page)
page_cache_get(page);
local_irq_save(flags);
pvec = &__get_cpu_var(lru_rotate_pvecs);
pvec = this_cpu_ptr(&lru_rotate_pvecs);
if (!pagevec_add(pvec, page))
pagevec_move_tail(pvec);
local_irq_restore(flags);

2
mm/vmalloc.c
View File

@ -1496,7 +1496,7 @@ void vfree(const void *addr)
if (!addr)
return;
if (unlikely(in_interrupt())) {
struct vfree_deferred *p = &__get_cpu_var(vfree_deferred);
struct vfree_deferred *p = this_cpu_ptr(&vfree_deferred);
if (llist_add((struct llist_node *)addr, &p->list))
schedule_work(&p->wq);
} else

4
mm/vmstat.c
View File

@ -489,7 +489,7 @@ static void refresh_cpu_vm_stats(void)
continue;
if (__this_cpu_read(p->pcp.count))
drain_zone_pages(zone, __this_cpu_ptr(&p->pcp));
drain_zone_pages(zone, this_cpu_ptr(&p->pcp));
#endif
}
fold_diff(global_diff);
@ -1230,7 +1230,7 @@ int sysctl_stat_interval __read_mostly = HZ;
static void vmstat_update(struct work_struct *w)
{
refresh_cpu_vm_stats();
schedule_delayed_work(&__get_cpu_var(vmstat_work),
schedule_delayed_work(this_cpu_ptr(&vmstat_work),
round_jiffies_relative(sysctl_stat_interval));
}

2
mm/zsmalloc.c
View File

@ -1082,7 +1082,7 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
class = &pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
area = &__get_cpu_var(zs_map_area);
area = this_cpu_ptr(&zs_map_area);
if (off + class->size <= PAGE_SIZE)
kunmap_atomic(area->vm_addr);
else {