diff options
| author | Sidhartha Kumar <sidhartha.kumar@oracle.com> | 2024-08-12 15:05:43 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-01 20:26:11 -0700 |
| commit | 617f8e4d76b81361884db852005f519012ddd244 (patch) | |
| tree | 009ff217bf01d80a76fe89f8cf3bb24d9bcaa469 /lib/maple_tree.c | |
| parent | e1b8b883bb838339eec728de5d02e2f252a7d3d9 (diff) | |
maple_tree: add test to replicate low memory race conditions
Add new callback fields to the userspace implementation of struct
kmem_cache. This allows for executing callback functions in order to
further test low memory scenarios where node allocation is retried.
This callback can help test race conditions by calling a function when a
low memory event is tested.
Link: https://lkml.kernel.org/r/20240812190543.71967-2-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/maple_tree.c')
| -rw-r--r-- | lib/maple_tree.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/maple_tree.c b/lib/maple_tree.c index b547ff211ac7..14d7864b8d53 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -7005,6 +7005,19 @@ void mt_set_non_kernel(unsigned int val) kmem_cache_set_non_kernel(maple_node_cache, val); } +extern void kmem_cache_set_callback(struct kmem_cache *cachep, + void (*callback)(void *)); +void mt_set_callback(void (*callback)(void *)) +{ + kmem_cache_set_callback(maple_node_cache, callback); +} + +extern void kmem_cache_set_private(struct kmem_cache *cachep, void *private); +void mt_set_private(void *private) +{ + kmem_cache_set_private(maple_node_cache, private); +} + extern unsigned long kmem_cache_get_alloc(struct kmem_cache *); unsigned long mt_get_alloc_size(void) { |