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documentation: Clarify wake-up/memory-barrier relationship
authorPaul E. McKenney <[email protected]>
Tue, 13 May 2014 17:14:51 +0000 (10:14 -0700)
committerPaul E. McKenney <[email protected]>
Tue, 8 Jul 2014 15:13:03 +0000 (08:13 -0700)
commit5726ce06ad6bcd8dd75a204d1465c99a2f897d3a
treec3240a49d769fc49f0fee614f63c897ddce87f3btree | snapshot
parent4a81e8328d3791a4f99bf5b436d050f6dc5ffea3commit | diff
documentation: Clarify wake-up/memory-barrier relationship

This commit adds an example demonstrating that if a wake_up() doesn't
actually wake something up, no memory ordering is provided.

Reported-by: Peter Zijlstra <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
Reviewed-by: Lai Jiangshan <[email protected]>
Acked-by: Peter Zijlstra <[email protected]>
Documentation/memory-barriers.txt diff | blob | blame | history
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