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testing/radix-tree/maple: Hack around kfree_rcu not existing

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liburcu doesn't have kfree_rcu (or anything similar). Despite that, we
can hack around it in a trivial fashion, by adding a wrapper.

The wrapper only works for maple_nodes because we cannot get the
kmem_cache pointer any other way in the test code.

Link: https://lore.kernel.org/all/20250812162124.59417-1-pfalcato@suse.de/
Suggested-by: Pedro Falcato <pfalcato@suse.de>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Liam R. Howlett 2025-09-03 14:59:57 +02:00 • committed by Vlastimil Babka
parent 9f910f7d3d
commit 551a6e757a
2 changed files with 17 additions and 0 deletions
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11
tools/testing/shared/maple-shared.h
View file

@ -10,4 +10,15 @@
#include <time.h>
#include "linux/init.h"
void maple_rcu_cb(struct rcu_head *head);
#define rcu_cb maple_rcu_cb
#define kfree_rcu(_struct, _memb) \
do { \
typeof(_struct) _p_struct = (_struct); \
\
call_rcu(&((_p_struct)->_memb), rcu_cb); \
} while(0);
#endif /* __MAPLE_SHARED_H__ */

6
tools/testing/shared/maple-shim.c
View file

@ -6,3 +6,9 @@
#include <linux/slab.h>
#include "../../../lib/maple_tree.c"
void maple_rcu_cb(struct rcu_head *head) {
struct maple_node *node = container_of(head, struct maple_node, rcu);
kmem_cache_free(maple_node_cache, node);
}