From: "Uladzislau Rezki (Sony)" <[email protected]> This commit open-codes the __kvfree_rcu() macro, thus saving a few lines of code and improving readability.
Signed-off-by: Uladzislau Rezki (Sony) <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> --- include/linux/rcupdate.h | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index b95373e..f1576cd 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -840,15 +840,6 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) */ #define __is_kvfree_rcu_offset(offset) ((offset) < 4096) -/* - * Helper macro for kfree_rcu() to prevent argument-expansion eyestrain. - */ -#define __kvfree_rcu(head, offset) \ - do { \ - BUILD_BUG_ON(!__is_kvfree_rcu_offset(offset)); \ - kvfree_call_rcu(head, (rcu_callback_t)(unsigned long)(offset)); \ - } while (0) - /** * kfree_rcu() - kfree an object after a grace period. * @ptr: pointer to kfree for both single- and double-argument invocations. @@ -866,7 +857,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) * Because the functions are not allowed in the low-order 4096 bytes of * kernel virtual memory, offsets up to 4095 bytes can be accommodated. * If the offset is larger than 4095 bytes, a compile-time error will - * be generated in __kvfree_rcu(). If this error is triggered, you can + * be generated in kvfree_rcu_arg_2(). If this error is triggered, you can * either fall back to use of call_rcu() or rearrange the structure to * position the rcu_head structure into the first 4096 bytes. * @@ -912,8 +903,11 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) do { \ typeof (ptr) ___p = (ptr); \ \ - if (___p) \ - __kvfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \ + if (___p) { \ + BUILD_BUG_ON(!__is_kvfree_rcu_offset(offsetof(typeof(*(ptr)), rhf))); \ + kvfree_call_rcu(&((___p)->rhf), (rcu_callback_t)(unsigned long) \ + (offsetof(typeof(*(ptr)), rhf))); \ + } \ } while (0) #define kvfree_rcu_arg_1(ptr) \ -- 2.9.5
