rhashtable: Move mutex_is_held under PROVE_LOCKING

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>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

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,
         };