Messages in this thread Patch in this message | | | From | Pranith Kumar <> | Subject | [PATCH v2 1/9] doc: memory-barriers.txt: Document use of lockless_dereference() | Date | Fri, 21 Nov 2014 10:05:55 -0500 |
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Recently lockless_dereference() was added which can be used in place of hard-coding smp_read_barrier_depends(). The following PATCH makes the change.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> --- Documentation/memory-barriers.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index 7ee2ae6..d33aab3 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -203,8 +203,8 @@ There are some minimal guarantees that may be expected of a CPU: and always in that order. On most systems, smp_read_barrier_depends() does nothing, but it is required for DEC Alpha. The ACCESS_ONCE() is required to prevent compiler mischief. Please note that you - should normally use something like rcu_dereference() instead of - open-coding smp_read_barrier_depends(). + should normally use something like rcu_dereference() or + lockless_dereference() instead of open-coding smp_read_barrier_depends(). (*) Overlapping loads and stores within a particular CPU will appear to be ordered within that CPU. This means that for: -- 1.9.1
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