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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-05-14 16:33:49 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-05-15 08:11:17 +0200 |
| commit | 1bd3742043fa44dd0ec25770abdcdfe1f6e8681e (patch) | |
| tree | 62075928e45d930e1af8dda515ef3f30618631d0 /tools/memory-model/litmus-tests/README | |
| parent | 15553dcbca0638de57047e79b9fb4ea77aa04db3 (diff) | |
| download | kernel_replicant_linux-1bd3742043fa44dd0ec25770abdcdfe1f6e8681e.tar.gz kernel_replicant_linux-1bd3742043fa44dd0ec25770abdcdfe1f6e8681e.tar.bz2 kernel_replicant_linux-1bd3742043fa44dd0ec25770abdcdfe1f6e8681e.zip | |
tools/memory-model: Flag "cumulativity" and "propagation" tests
This commit flags WRC+pooncerelease+rmbonceonce+Once.litmus
as being forbidden by smp_store_release() A-cumulativity and
IRIW+mbonceonces+OnceOnce.litmus as being forbidden by the LKMM
propagation rule.
Suggested-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
[ paulmck: Updated wording as suggested by Alan Stern. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: akiyks@gmail.com
Cc: boqun.feng@gmail.com
Cc: dhowells@redhat.com
Cc: j.alglave@ucl.ac.uk
Cc: linux-arch@vger.kernel.org
Cc: luc.maranget@inria.fr
Cc: npiggin@gmail.com
Cc: parri.andrea@gmail.com
Link: http://lkml.kernel.org/r/1526340837-12222-11-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/memory-model/litmus-tests/README')
| -rw-r--r-- | tools/memory-model/litmus-tests/README | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/memory-model/litmus-tests/README b/tools/memory-model/litmus-tests/README index 6919909bbd0f..17eb9a8c222d 100644 --- a/tools/memory-model/litmus-tests/README +++ b/tools/memory-model/litmus-tests/README @@ -23,7 +23,8 @@ IRIW+mbonceonces+OnceOnce.litmus between each pairs of reads. In other words, is smp_mb() sufficient to cause two different reading processes to agree on the order of a pair of writes, where each write is to a different - variable by a different process? + variable by a different process? This litmus test is forbidden + by LKMM's propagation rule. IRIW+poonceonces+OnceOnce.litmus Test of independent reads from independent writes with nothing @@ -119,8 +120,10 @@ S+wmbonceonce+poacquireonce.litmus WRC+poonceonces+Once.litmus WRC+pooncerelease+rmbonceonce+Once.litmus - These two are members of an extension of the MP litmus-test class - in which the first write is moved to a separate process. + These two are members of an extension of the MP litmus-test + class in which the first write is moved to a separate process. + The second is forbidden because smp_store_release() is + A-cumulative in LKMM. Z6.0+pooncelock+pooncelock+pombonce.litmus Is the ordering provided by a spin_unlock() and a subsequent |