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| author | Scott Tsai <scottt@scottt.tw> | 2017-09-19 20:16:00 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-10-20 20:09:32 +0200 |
| commit | d92f842bb30f52beedad63a4a850b39ca0dbc45f (patch) | |
| tree | 03d81db6292daff1a2932584b6fc0f3234327394 /Documentation/memory-barriers.txt | |
| parent | memory-barriers: Rework multicopy-atomicity section (diff) | |
| download | linux-d92f842bb30f52beedad63a4a850b39ca0dbc45f.tar.xz linux-d92f842bb30f52beedad63a4a850b39ca0dbc45f.zip | |
memory-barriers.txt: Fix typo in pairing example
In the "general barrier pairing with implicit control depdendency"
example, the last write by CPU 1 was meant to change variable x and not
y. The example would be pretty uninteresting if no CPU ever changes x
and the variable was initialized to zero.
Signed-off-by: Scott Tsai <scottt@scottt.tw>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index 7deee1441640..f37375544d71 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -947,7 +947,7 @@ Or even: =============== =============================== r1 = READ_ONCE(y); <general barrier> - WRITE_ONCE(y, 1); if (r2 = READ_ONCE(x)) { + WRITE_ONCE(x, 1); if (r2 = READ_ONCE(x)) { <implicit control dependency> WRITE_ONCE(y, 1); } |