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-rw-r--r--include/linux/rhashtable.h2
-rw-r--r--lib/rhashtable.c8
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index fb298e9d6d3a..96ce8ceff554 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -65,7 +65,9 @@ struct rhashtable_params {
size_t new_size);
bool (*shrink_decision)(const struct rhashtable *ht,
size_t new_size);
+#ifdef CONFIG_PROVE_LOCKING
int (*mutex_is_held)(void);
+#endif
};
/**
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 081be3ba9ea8..c7654b6f5f64 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -532,7 +532,9 @@ static size_t rounded_hashtable_size(struct rhashtable_params *params)
* .key_offset = offsetof(struct test_obj, key),
* .key_len = sizeof(int),
* .hashfn = arch_fast_hash,
+ * #ifdef CONFIG_PROVE_LOCKING
* .mutex_is_held = &my_mutex_is_held,
+ * #endif
* };
*
* Configuration Example 2: Variable length keys
@@ -552,7 +554,9 @@ static size_t rounded_hashtable_size(struct rhashtable_params *params)
* .head_offset = offsetof(struct test_obj, node),
* .hashfn = arch_fast_hash,
* .obj_hashfn = my_hash_fn,
+ * #ifdef CONFIG_PROVE_LOCKING
* .mutex_is_held = &my_mutex_is_held,
+ * #endif
* };
*/
int rhashtable_init(struct rhashtable *ht, struct rhashtable_params *params)
@@ -613,10 +617,12 @@ EXPORT_SYMBOL_GPL(rhashtable_destroy);
#define TEST_PTR ((void *) 0xdeadbeef)
#define TEST_NEXPANDS 4
+#ifdef CONFIG_PROVE_LOCKING
static int test_mutex_is_held(void)
{
return 1;
}
+#endif
struct test_obj {
void *ptr;
@@ -767,7 +773,9 @@ static int __init test_rht_init(void)
.key_offset = offsetof(struct test_obj, value),
.key_len = sizeof(int),
.hashfn = arch_fast_hash,
+#ifdef CONFIG_PROVE_LOCKING
.mutex_is_held = &test_mutex_is_held,
+#endif
.grow_decision = rht_grow_above_75,
.shrink_decision = rht_shrink_below_30,
};