The patch titled
Subject: mm, sl[au]b: print gfp_flags as strings in slab_out_of_memory()
has been added to the -mm tree. Its filename is
mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, sl[au]b: print gfp_flags as strings in slab_out_of_memory()
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 <vbabka@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab.c | 10 ++++------
mm/slub.c | 4 ++--
2 files changed, 6 insertions(+), 8 deletions(-)
diff -puN mm/slab.c~mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory mm/slab.c
--- a/mm/slab.c~mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory
+++ a/mm/slab.c
@@ -1350,10 +1350,9 @@ slab_out_of_memory(struct kmem_cache *ca
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) {
@@ -1377,8 +1376,7 @@ slab_out_of_memory(struct kmem_cache *ca
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 -puN mm/slub.c~mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory mm/slub.c
--- a/mm/slub.c~mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory
+++ a/mm/slub.c
@@ -2236,8 +2236,8 @@ slab_out_of_memory(struct kmem_cache *s,
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));
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
tracepoints-move-trace_print_flags-definitions-to-tracepoint-defsh.patch
mm-tracing-make-show_gfp_flags-up-to-date.patch
tools-perf-make-gfp_compact_table-up-to-date.patch
mm-tracing-unify-mm-flags-handling-in-tracepoints-and-printk.patch
mm-printk-introduce-new-format-string-for-flags.patch
mm-printk-introduce-new-format-string-for-flags-fix.patch
mm-debug-replace-dump_flags-with-the-new-printk-formats.patch
mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
mm-oom-print-symbolic-gfp_flags-in-oom-warning.patch
mm-page_owner-print-migratetype-of-page-and-pageblock-symbolic-flags.patch
mm-page_owner-convert-page_owner_inited-to-static-key.patch
mm-page_owner-copy-page-owner-info-during-migration.patch
mm-page_owner-track-and-print-last-migrate-reason.patch
mm-page_owner-dump-page-owner-info-from-dump_page.patch
mm-debug-move-bad-flags-printing-to-bad_page.patch
mm-slb-print-gfp_flags-as-strings-in-slab_out_of_memory.patch
mm-kswapd-remove-bogus-check-of-balance_classzone_idx.patch
mm-compaction-introduce-kcompactd.patch
mm-memory-hotplug-small-cleanup-in-online_pages.patch
mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd.patch
mm-compaction-adapt-isolation_suitable-flushing-to-kcompactd.patch
mm-tracing-refresh-__def_vmaflag_names-fix.patch
mm-use-radix_tree_iter_retry-fix.patch
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