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Subject: mm-vmalloc.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 12 Jul 2011 11:39:36 +0200
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
mm/vmalloc.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
Index: linux-stable/mm/vmalloc.c
===================================================================
--- linux-stable.orig/mm/vmalloc.c
+++ linux-stable/mm/vmalloc.c
@@ -782,7 +782,7 @@ static struct vmap_block *new_vmap_block
struct vmap_block *vb;
struct vmap_area *va;
unsigned long vb_idx;
- int node, err;
+ int node, err, cpu;
node = numa_node_id();
@@ -821,12 +821,13 @@ static struct vmap_block *new_vmap_block
BUG_ON(err);
radix_tree_preload_end();
- vbq = &get_cpu_var(vmap_block_queue);
+ cpu = get_cpu_light();
+ vbq = &__get_cpu_var(vmap_block_queue);
vb->vbq = vbq;
spin_lock(&vbq->lock);
list_add_rcu(&vb->free_list, &vbq->free);
spin_unlock(&vbq->lock);
- put_cpu_var(vmap_block_queue);
+ put_cpu_light();
return vb;
}
@@ -900,7 +901,7 @@ static void *vb_alloc(unsigned long size
struct vmap_block *vb;
unsigned long addr = 0;
unsigned int order;
- int purge = 0;
+ int purge = 0, cpu;
BUG_ON(size & ~PAGE_MASK);
BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC);
@@ -916,7 +917,8 @@ static void *vb_alloc(unsigned long size
again:
rcu_read_lock();
- vbq = &get_cpu_var(vmap_block_queue);
+ cpu = get_cpu_light();
+ vbq = &__get_cpu_var(vmap_block_queue);
list_for_each_entry_rcu(vb, &vbq->free, free_list) {
int i;
@@ -953,7 +955,7 @@ next:
if (purge)
purge_fragmented_blocks_thiscpu();
- put_cpu_var(vmap_block_queue);
+ put_cpu_light();
rcu_read_unlock();
if (!addr) {
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