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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-10-03 10:28:30 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-10-23 14:44:46 -0700 |
| commit | f191eec58803e1e16c3421638cdcc9195c425851 (patch) | |
| tree | aa3e8426dd5e1274e38356257fe619f5894e3fbc /Documentation/memory-barriers.txt | |
| parent | 6f0c0580b70c89094b3422ba81118c7b959c7556 (diff) | |
| download | lwn-f191eec58803e1e16c3421638cdcc9195c425851.tar.gz lwn-f191eec58803e1e16c3421638cdcc9195c425851.zip | |
Documentation: Fix memory-barriers.txt example
This commit fixes a broken example of overlapping stores in the
Documentation/memory-barriers.txt file.
Reported-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/memory-barriers.txt')
| -rw-r--r-- | Documentation/memory-barriers.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index 2759f7c188f0..3c4e1b3b80a1 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -251,12 +251,13 @@ And there are a number of things that _must_ or _must_not_ be assumed: And for: - *A = X; Y = *A; + *A = X; *(A + 4) = Y; - we may get either of: + we may get any of: - STORE *A = X; Y = LOAD *A; - STORE *A = Y = X; + STORE *A = X; STORE *(A + 4) = Y; + STORE *(A + 4) = Y; STORE *A = X; + STORE {*A, *(A + 4) } = {X, Y}; ========================= |