Messages in this thread | | | Date | Tue, 6 Mar 2012 19:41:55 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH -v2] mm: SLAB Out-of-memory diagnostics |
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On Mon, 5 Mar 2012, Rafael Aquini wrote:
> diff --git a/mm/slab.c b/mm/slab.c > index f0bd785..4aeb5e7 100644 > --- a/mm/slab.c > +++ b/mm/slab.c > @@ -1731,6 +1731,52 @@ static int __init cpucache_init(void) > } > __initcall(cpucache_init); > > +static noinline void > +slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid) > +{ > + struct kmem_list3 *l3; > + struct slab *slabp; > + unsigned long flags; > + int node; > + > + printk(KERN_WARNING > + "SLAB: Unable to allocate memory on node %d (gfp=0x%x)\n", > + nodeid, gfpflags); > + printk(KERN_WARNING " cache: %s, object size: %d, order: %d\n", > + cachep->name, cachep->buffer_size, cachep->gfporder); > + > + for_each_online_node(node) { > + unsigned long active_objs = 0, num_objs = 0, free_objects = 0; > + unsigned long active_slabs = 0, num_slabs = 0; > + > + l3 = cachep->nodelists[node]; > + if (!l3) > + continue; > + > + spin_lock_irqsave(&l3->list_lock, flags);
Could be spin_lock_irq(&l3->list_lock);
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