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Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 543c02a1a9b5..ccd1ca5b822e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -891,6 +891,23 @@ config MEMCG_KMEM the kmem extension can use it to guarantee that no group of processes will ever exhaust kernel resources alone. +config MEMCG_DEBUG_ASYNC_DESTROY + bool "Memory Resource Controller Debug asynchronous object destruction" + depends on MEMCG_KMEM || MEMCG_SWAP + default n + help + When a memcg is destroyed, the memory consumed by it may not be + immediately freed. This is because when some extensions are used, such + as swap or kernel memory, objects can outlive the group and hold a + reference to it. + + If this is the case, the dangling_memcgs file will show information + about what are the memcgs still alive, and which references are still + preventing it to be freed. There is nothing wrong with that, but it is + very useful when debugging, to know where this memory is being held. + This is a developer-oriented debugging facility only, and no + guarantees of interface stability will be given. + config CGROUP_HUGETLB bool "HugeTLB Resource Controller for Control Groups" depends on RESOURCE_COUNTERS && HUGETLB_PAGE |