Commit dbc55faa authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds

SLUB: Make lockdep happy by not calling add_partial with interrupts enabled during bootstrap

If we move the local_irq_enable() to the end of the function then
add_partial() in early_kmem_cache_node_alloc() will be called
with interrupts disabled like during regular operations.

This makes lockdep happy.
Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Tested-by: default avatarAndre Noll <maan@systemlinux.org>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 746976a3
......@@ -1798,8 +1798,6 @@ static struct kmem_cache_node * __init early_kmem_cache_node_alloc(gfp_t gfpflag
BUG_ON(kmalloc_caches->size < sizeof(struct kmem_cache_node));
page = new_slab(kmalloc_caches, gfpflags | GFP_THISNODE, node);
/* new_slab() disables interupts */
local_irq_enable();
BUG_ON(!page);
n = page->freelist;
......@@ -1811,6 +1809,12 @@ static struct kmem_cache_node * __init early_kmem_cache_node_alloc(gfp_t gfpflag
init_kmem_cache_node(n);
atomic_long_inc(&n->nr_slabs);
add_partial(n, page);
/*
* new_slab() disables interupts. If we do not reenable interrupts here
* then bootup would continue with interrupts disabled.
*/
local_irq_enable();
return n;
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment