Subject: mm-vmalloc.patch From: Thomas Gleixner Date: Tue, 12 Jul 2011 11:39:36 +0200 Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz Signed-off-by: Thomas Gleixner --- mm/vmalloc.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -790,7 +790,7 @@ 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(); @@ -828,11 +828,12 @@ 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); 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; } @@ -900,6 +901,7 @@ static void *vb_alloc(unsigned long size struct vmap_block *vb; unsigned long addr = 0; unsigned int order; + int cpu = 0; BUG_ON(size & ~PAGE_MASK); BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC); @@ -915,7 +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; @@ -939,7 +942,7 @@ static void *vb_alloc(unsigned long size spin_unlock(&vb->lock); } - put_cpu_var(vmap_block_queue); + put_cpu_light(); rcu_read_unlock(); if (!addr) {