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| author | Paul E. McKenney <[email protected]> | 2016-01-15 17:30:42 +0000 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2016-03-14 22:52:18 +0000 |
| commit | c535cc92924baf68e238bd1b5ff8d74883f88b9b (patch) | |
| tree | 7659bf6bc6c43ba024700015f89a4b7b77b3b758 /net/switchdev/switchdev.c | |
| parent | documentation: Subsequent writes ordered by rcu_dereference() (diff) | |
| download | kernel-c535cc92924baf68e238bd1b5ff8d74883f88b9b.tar.gz kernel-c535cc92924baf68e238bd1b5ff8d74883f88b9b.zip | |
documentation: Distinguish between local and global transitivity
The introduction of smp_load_acquire() and smp_store_release() had
the side effect of introducing a weaker notion of transitivity:
The transitivity of full smp_mb() barriers is global, but that
of smp_store_release()/smp_load_acquire() chains is local. This
commit therefore introduces the notion of local transitivity and
gives an example.
Reported-by: Peter Zijlstra <[email protected]>
Reported-by: Will Deacon <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
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