On 9/27/17 12:14 AM, Christopher Lameter wrote:
On Wed, 27 Sep 2017, Yang Shi wrote:
Print out unreclaimable slab info (used size and total size) which
actual memory usage is not zero (num_objs * size != 0) when:
- unreclaimable slabs : all user memory > unreclaim_slabs_oom_ratio
- panic_on_oom is set or no killable process
Ok. I like this much more than the earlier releases.
diff --git a/mm/slab.h b/mm/slab.h
index 0733628..b0496d1 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -505,6 +505,14 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node)
void memcg_slab_stop(struct seq_file *m, void *p);
int memcg_slab_show(struct seq_file *m, void *p);
+#ifdef CONFIG_SLABINFO
+void dump_unreclaimable_slab(void);
+#else
+static inline void dump_unreclaimable_slab(void)
+{
+}
+#endif
CONFIG_SLABINFO? How does this relate to the oom info? /proc/slabinfo
support is optional. Oom info could be included even if CONFIG_SLABINFO
goes away. Remove the #ifdef?
Because we want to dump the unreclaimable slab info in oom info.
Thanks,
Yang
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