diff options
| author | Axel Rasmussen <axelrasmussen@google.com> | 2024-08-14 14:50:37 -0700 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2024-08-26 21:19:54 +0200 |
| commit | bf6b9e9ba0861c92b08c77edbd5d602063443c5f (patch) | |
| tree | 8472a959eb1ed0469342d57b226a15eb1f2ef5c1 /mm/slub.c | |
| parent | 4c39529663b93165953ecf9b1a9ea817358dcd06 (diff) | |
mm, slub: print CPU id (and its node) on slab OOM
Depending on how remote_node_defrag_ratio is configured, allocations can
end up in this path as a result of the local node being OOM, despite the
allocation overall being unconstrained (node == -1).
When we print a warning, printing the current CPU makes that situation
more clear (i.e., you can immediately see which node's OOM status
matters for the allocation at hand).
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/slub.c b/mm/slub.c index c9d8a2497fd6..3088260bf75d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3416,14 +3416,15 @@ slab_out_of_memory(struct kmem_cache *s, gfp_t gfpflags, int nid) { static DEFINE_RATELIMIT_STATE(slub_oom_rs, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST); + int cpu = raw_smp_processor_id(); int node; struct kmem_cache_node *n; if ((gfpflags & __GFP_NOWARN) || !__ratelimit(&slub_oom_rs)) return; - pr_warn("SLUB: Unable to allocate memory on node %d, gfp=%#x(%pGg)\n", - nid, gfpflags, &gfpflags); + pr_warn("SLUB: Unable to allocate memory on CPU %u (of node %d) on node %d, gfp=%#x(%pGg)\n", + cpu, cpu_to_node(cpu), nid, gfpflags, &gfpflags); pr_warn(" cache: %s, object size: %u, buffer size: %u, default order: %u, min order: %u\n", s->name, s->object_size, s->size, oo_order(s->oo), oo_order(s->min)); |