We can now print gfp_flags more human-readable. Make use of this in slab_out_of_memory() for SLUB and SLAB. Also convert the SLAB variant it to pr_warn() along the way.
Signed-off-by: Vlastimil Babka <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: David Rientjes <[email protected]> Cc: Joonsoo Kim <[email protected]> --- This could go after e.g. mm-oom-print-symbolic-gfp_flags-in-oom-warning.patch Quick grep suggests there are no other places to convert. mm/slab.c | 10 ++++------ mm/slub.c | 4 ++-- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index b9ee77554008..c87088ae2351 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1347,10 +1347,9 @@ slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid) if ((gfpflags & __GFP_NOWARN) || !__ratelimit(&slab_oom_rs)) return; - 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", + pr_warn("SLAB: Unable to allocate memory on node %d, gfp=%#x(%pGg)\n", + nodeid, gfpflags, &gfpflags); + pr_warn(" cache: %s, object size: %d, order: %d\n", cachep->name, cachep->size, cachep->gfporder); for_each_kmem_cache_node(cachep, node, n) { @@ -1374,8 +1373,7 @@ slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid) num_slabs += active_slabs; num_objs = num_slabs * cachep->num; - printk(KERN_WARNING - " node %d: slabs: %ld/%ld, objs: %ld/%ld, free: %ld\n", + pr_warn(" node %d: slabs: %ld/%ld, objs: %ld/%ld, free: %ld\n", node, active_slabs, num_slabs, active_objs, num_objs, free_objects); } diff --git a/mm/slub.c b/mm/slub.c index d86720d93cda..8caaf2903241 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2248,8 +2248,8 @@ slab_out_of_memory(struct kmem_cache *s, gfp_t gfpflags, int nid) if ((gfpflags & __GFP_NOWARN) || !__ratelimit(&slub_oom_rs)) return; - pr_warn("SLUB: Unable to allocate memory on node %d (gfp=0x%x)\n", - nid, gfpflags); + pr_warn("SLUB: Unable to allocate memory on node %d, gfp=%#x(%pGg)\n", + nid, gfpflags, &gfpflags); pr_warn(" cache: %s, object size: %d, buffer size: %d, default order: %d, min order: %d\n", s->name, s->object_size, s->size, oo_order(s->oo), oo_order(s->min)); -- 2.7.2
