From: Akira Yokosawa <akiyks@gmail.com>
To: paulmck@kernel.org
Cc: parri.andrea@gmail.com, stern@rowland.harvard.edu,
will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com,
npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk,
luc.maranget@inria.fr, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, kernel-team@meta.com,
mingo@kernel.org, Akira Yokosawa <akiyks@gmail.com>
Subject: Re: [PATCH memory-model scripts 01/31] tools/memory-model: Document locking corner cases
Date: Fri, 24 Mar 2023 08:30:38 +0900 [thread overview]
Message-ID: <2d26aad2-a1d5-649c-86ec-9457c577333f@gmail.com> (raw)
In-Reply-To: <cd356db2-1643-4b01-bb13-16a7f92cf980@paulmck-laptop>
On Thu, 23 Mar 2023 11:52:15 -0700, Paul E. McKenney wrote:
> On Thu, Mar 23, 2023 at 11:52:57AM +0900, Akira Yokosawa wrote:
>> Hi Paul,
>>
>> On Mon, 20 Mar 2023 18:05:19 -0700, Paul E. McKenney wrote:
>>> Most Linux-kernel uses of locking are straightforward, but there are
>>> corner-case uses that rely on less well-known aspects of the lock and
>>> unlock primitives. This commit therefore adds a locking.txt and litmus
>>> tests in Documentation/litmus-tests/locking to explain these corner-case
>>> uses.
>>>
>>> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
>>> ---
>>> .../litmus-tests/locking/DCL-broken.litmus | 55 +++
>>> .../litmus-tests/locking/DCL-fixed.litmus | 56 +++
>>> .../litmus-tests/locking/RM-broken.litmus | 42 +++
>>> .../litmus-tests/locking/RM-fixed.litmus | 42 +++
>>> tools/memory-model/Documentation/locking.txt | 320 ++++++++++++++++++
>>
>> I think the documentation needs adjustment to cope with Andrea's change
>> of litmus tests.
>>
>> Also, coding style of code snippets taken from litmus tests look somewhat
>> inconsistent with other snippets taken from MP+... litmus tests:
>>
>> - Simple function signature such as "void CPU0(void)".
>> - No declaration of local variables.
>> - Indirection level of global variables.
>> - No "locations" clause
>>
>> How about applying the diff below?
>
> Good eyes, thank you! I will fold this in with attribution.
Feel free to add
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Thanks, Akira
>
> Thanx, Paul
>
>> Thanks, Akira
next prev parent reply other threads:[~2023-03-23 23:30 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-21 1:05 [PATCH memory-model 0/31] LKMM scripting updates for v6.4 Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 01/31] tools/memory-model: Document locking corner cases Paul E. McKenney
2023-03-22 8:59 ` Andrea Parri
2023-03-22 19:14 ` Paul E. McKenney
2023-03-23 1:42 ` Andrea Parri
2023-03-23 2:52 ` Akira Yokosawa
2023-03-23 18:52 ` Paul E. McKenney
2023-03-23 23:30 ` Akira Yokosawa [this message]
2023-03-23 23:49 ` Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 02/31] tools/memory-model: Make judgelitmus.sh note timeouts Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 03/31] tools/memory-model: Make cmplitmushist.sh " Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 04/31] tools/memory-model: Make judgelitmus.sh identify bad macros Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 05/31] tools/memory-model: Make judgelitmus.sh detect hard deadlocks Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 06/31] tools/memory-model: Fix paulmck email address on pre-existing scripts Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 07/31] tools/memory-model: Update parseargs.sh for hardware verification Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 08/31] tools/memory-model: Make judgelitmus.sh handle hardware verifications Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 09/31] tools/memory-model: Add simpletest.sh to check locking, RCU, and SRCU Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 10/31] tools/memory-model: Fix checkalllitmus.sh comment Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 11/31] tools/memory-model: Hardware checking for check{,all}litmus.sh Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 12/31] tools/memory-model: Make judgelitmus.sh ransack .litmus.out files Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 13/31] tools/memory-model: Split runlitmus.sh out of checklitmus.sh Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 14/31] tools/memory-model: Make runlitmus.sh generate .litmus.out for --hw Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 15/31] tools/memory-model: Move from .AArch64.litmus.out to .litmus.AArch.out Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 16/31] tools/memory-model: Keep assembly-language litmus tests Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 17/31] tools/memory-model: Allow herd to deduce CPU type Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 18/31] tools/memory-model: Make runlitmus.sh check for jingle errors Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 19/31] tools/memory-model: Add -v flag to jingle7 runs Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 20/31] tools/memory-model: Implement --hw support for checkghlitmus.sh Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 21/31] tools/memory-model: Fix scripting --jobs argument Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 22/31] tools/memory-model: Make checkghlitmus.sh use mselect7 Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 23/31] tools/memory-model: Make history-check scripts " Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 24/31] tools/memory-model: Add "--" to parseargs.sh for additional arguments Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 25/31] tools/memory-model: Repair parseargs.sh header comment Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 26/31] tools/memory-model: Add checktheselitmus.sh to run specified litmus tests Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 27/31] tools/memory-model: Add data-race capabilities to judgelitmus.sh Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 28/31] tools/memory-model: Make judgelitmus.sh handle scripted Result: tag Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 29/31] tools/memory-model: Use "-unroll 0" to keep --hw runs finite Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 30/31] tools/memory-model: Use "grep -E" instead of "egrep" Paul E. McKenney
2023-03-21 1:05 ` [PATCH memory-model scripts 31/31] tools/memory-model: Document LKMM test procedure Paul E. McKenney
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