Commit-ID: bfd403bb3617e17a272e1189e5c76253052c22b8 Gitweb: https://git.kernel.org/tip/bfd403bb3617e17a272e1189e5c76253052c22b8 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> AuthorDate: Mon, 14 May 2018 16:33:44 -0700 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Tue, 15 May 2018 08:11:16 +0200 tools/memory-order: Update the cheat-sheet to show that smp_mb__after_atomic() orders later RMW operations The current cheat sheet does not claim that smp_mb__after_atomic() orders later RMW atomic operations, which it must, at least against earlier RMW atomic operations and whatever precedes them. This commit therefore adds the needed "Y". Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: akiyks@xxxxxxxxx Cc: boqun.feng@xxxxxxxxx Cc: dhowells@xxxxxxxxxx Cc: j.alglave@xxxxxxxxx Cc: linux-arch@xxxxxxxxxxxxxxx Cc: luc.maranget@xxxxxxxx Cc: npiggin@xxxxxxxxx Cc: parri.andrea@xxxxxxxxx Link: http://lkml.kernel.org/r/1526340837-12222-6-git-send-email-paulmck@xxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- tools/memory-model/Documentation/cheatsheet.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/memory-model/Documentation/cheatsheet.txt b/tools/memory-model/Documentation/cheatsheet.txt index 46fe79afc737..33ba98d72b16 100644 --- a/tools/memory-model/Documentation/cheatsheet.txt +++ b/tools/memory-model/Documentation/cheatsheet.txt @@ -14,7 +14,7 @@ smp_wmb() Y W Y Y W smp_mb() & synchronize_rcu() CP Y Y Y Y Y Y Y Y Successful full non-void RMW CP Y Y Y Y Y Y Y Y Y Y Y smp_mb__before_atomic() CP Y Y Y a a a a Y -smp_mb__after_atomic() CP a a Y Y Y Y Y +smp_mb__after_atomic() CP a a Y Y Y Y Y Y Key: C: Ordering is cumulative -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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