@@ -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
};
/**
@@ -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,
};
The rhashtable function mutex_is_held is only used when PROVE_LOCKING is enabled. This patch makes the mutex_is_held field in rhashtable optional depending on PROVE_LOCKING. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> --- include/linux/rhashtable.h | 2 ++ lib/rhashtable.c | 8 ++++++++ 2 files changed, 10 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html