lkml.org 
[lkml]   [2019]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 12/13] include/linux: Remove smp_read_barrier_depends() from comments
Date
'smp_read_barrier_depends()' doesn't exist any more, so reword the two
comments that mention it to refer to "dependency ordering" instead.

Signed-off-by: Will Deacon <will@kernel.org>
---
include/linux/percpu-refcount.h | 2 +-
include/linux/ptr_ring.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
index 7aef0abc194a..246760b93715 100644
--- a/include/linux/percpu-refcount.h
+++ b/include/linux/percpu-refcount.h
@@ -155,7 +155,7 @@ static inline bool __ref_is_percpu(struct percpu_ref *ref,
* between contaminating the pointer value, meaning that
* READ_ONCE() is required when fetching it.
*
- * The smp_read_barrier_depends() implied by READ_ONCE() pairs
+ * The dependency ordering from the READ_ONCE() pairs
* with smp_store_release() in __percpu_ref_switch_to_percpu().
*/
percpu_ptr = READ_ONCE(ref->percpu_count_ptr);
diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h
index 0abe9a4fc842..b6e94b60fc12 100644
--- a/include/linux/ptr_ring.h
+++ b/include/linux/ptr_ring.h
@@ -106,7 +106,7 @@ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr)
return -ENOSPC;

/* Make sure the pointer we are storing points to a valid data. */
- /* Pairs with smp_read_barrier_depends in __ptr_ring_consume. */
+ /* Pairs with the dependency ordering in __ptr_ring_consume. */
smp_wmb();

WRITE_ONCE(r->queue[r->producer++], ptr);
--
2.24.0.rc1.363.gb1bccd3e3d-goog
\
 
 \ /
  Last update: 2019-11-08 18:03    [W:0.084 / U:27.876 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site