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[106.167.171.201]) by smtp.gmail.com with ESMTPSA id a13sm3430460itj.13.2018.02.09.08.06.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 09 Feb 2018 08:06:58 -0800 (PST) Subject: [PATCH] tools/memory-model: Restore compat with herd7 7.47 ("-" -> "_") To: paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org Cc: mingo@kernel.org, stern@rowland.harvard.edu, parri.andrea@gmail.com, will.deacon@arm.com, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, Akira Yokosawa , Patrick Bellasi References: <20180209141832.GA17505@linux.vnet.ibm.com> From: Akira Yokosawa Message-ID: <71d58dec-b76f-8458-1c61-b7d6237634a1@gmail.com> Date: Sat, 10 Feb 2018 01:06:53 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >From 9a0de4d75e18ef8e25a1096f88c7a970d9d693f5 Mon Sep 17 00:00:00 2001 From: Akira Yokosawa Date: Sat, 10 Feb 2018 00:45:25 +0900 Subject: [PATCH] tools/memory-model: Restore compat with herd7 7.47 ("-" -> "_") As of herd7 7.47, these '-'s are not permitted and end up in an error: File "./linux-kernel.def", line 44, characters 29-30: unexpected '-' (in macros) Partial revert of commit 2d5fba7782d6 ("linux-kernel*: Make RCU identifiers match ASPLOS paper") in the repository at https://github.com/aparri/memory-model can restore the compatibility with herd7 7.47. Reported-by: Patrick Bellasi Suggested-by: Andrea Parri Signed-off-by: Akira Yokosawa --- tools/memory-model/linux-kernel.bell | 20 ++++++++++---------- tools/memory-model/linux-kernel.cat | 8 ++++---- tools/memory-model/linux-kernel.def | 14 +++++++------- 3 files changed, 21 insertions(+), 21 deletions(-) -- 2.7.4 diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell index 18885ad..436791b 100644 --- a/tools/memory-model/linux-kernel.bell +++ b/tools/memory-model/linux-kernel.bell @@ -25,18 +25,18 @@ enum Barriers = 'wmb (*smp_wmb*) || 'rmb (*smp_rmb*) || 'mb (*smp_mb*) || 'rb_dep (*smp_read_barrier_depends*) || - 'rcu-lock (*rcu_read_lock*) || - 'rcu-unlock (*rcu_read_unlock*) || - 'sync-rcu (*synchronize_rcu*) || - 'before-atomic (*smp_mb__before_atomic*) || - 'after-atomic (*smp_mb__after_atomic*) || - 'after-spinlock (*smp_mb__after_spinlock*) + 'rcu_lock (*rcu_read_lock*) || + 'rcu_unlock (*rcu_read_unlock*) || + 'sync_rcu (*synchronize_rcu*) || + 'before_atomic (*smp_mb__before_atomic*) || + 'after_atomic (*smp_mb__after_atomic*) || + 'after_spinlock (*smp_mb__after_spinlock*) instructions F[Barriers] (* Compute matching pairs of nested Rcu-lock and Rcu-unlock *) let matched = let rec - unmatched-locks = Rcu-lock \ domain(matched) - and unmatched-unlocks = Rcu-unlock \ range(matched) + unmatched-locks = Rcu_lock \ domain(matched) + and unmatched-unlocks = Rcu_unlock \ range(matched) and unmatched = unmatched-locks | unmatched-unlocks and unmatched-po = [unmatched] ; po ; [unmatched] and unmatched-locks-to-unlocks = @@ -46,8 +46,8 @@ let matched = let rec in matched (* Validate nesting *) -flag ~empty Rcu-lock \ domain(matched) as unbalanced-rcu-locking -flag ~empty Rcu-unlock \ range(matched) as unbalanced-rcu-locking +flag ~empty Rcu_lock \ domain(matched) as unbalanced-rcu-locking +flag ~empty Rcu_unlock \ range(matched) as unbalanced-rcu-locking (* Outermost level of nesting only *) let crit = matched \ (po^-1 ; matched ; po^-1) diff --git a/tools/memory-model/linux-kernel.cat b/tools/memory-model/linux-kernel.cat index f0d27f8..d0085d5 100644 --- a/tools/memory-model/linux-kernel.cat +++ b/tools/memory-model/linux-kernel.cat @@ -29,10 +29,10 @@ let rb-dep = [R] ; fencerel(Rb_dep) ; [R] let rmb = [R \ Noreturn] ; fencerel(Rmb) ; [R \ Noreturn] let wmb = [W] ; fencerel(Wmb) ; [W] let mb = ([M] ; fencerel(Mb) ; [M]) | - ([M] ; fencerel(Before-atomic) ; [RMW] ; po? ; [M]) | - ([M] ; po? ; [RMW] ; fencerel(After-atomic) ; [M]) | - ([M] ; po? ; [LKW] ; fencerel(After-spinlock) ; [M]) -let gp = po ; [Sync-rcu] ; po? + ([M] ; fencerel(Before_atomic) ; [RMW] ; po? ; [M]) | + ([M] ; po? ; [RMW] ; fencerel(After_atomic) ; [M]) | + ([M] ; po? ; [LKW] ; fencerel(After_spinlock) ; [M]) +let gp = po ; [Sync_rcu] ; po? let strong-fence = mb | gp diff --git a/tools/memory-model/linux-kernel.def b/tools/memory-model/linux-kernel.def index f5a1eb0..fc08371 100644 --- a/tools/memory-model/linux-kernel.def +++ b/tools/memory-model/linux-kernel.def @@ -21,9 +21,9 @@ smp_mb() { __fence{mb} ; } smp_rmb() { __fence{rmb} ; } smp_wmb() { __fence{wmb} ; } smp_read_barrier_depends() { __fence{rb_dep}; } -smp_mb__before_atomic() { __fence{before-atomic} ; } -smp_mb__after_atomic() { __fence{after-atomic} ; } -smp_mb__after_spinlock() { __fence{after-spinlock} ; } +smp_mb__before_atomic() { __fence{before_atomic} ; } +smp_mb__after_atomic() { __fence{after_atomic} ; } +smp_mb__after_spinlock() { __fence{after_spinlock} ; } // Exchange xchg(X,V) __xchg{mb}(X,V) @@ -41,10 +41,10 @@ spin_unlock(X) { __unlock(X) ; } spin_trylock(X) __trylock(X) // RCU -rcu_read_lock() { __fence{rcu-lock}; } -rcu_read_unlock() { __fence{rcu-unlock};} -synchronize_rcu() { __fence{sync-rcu}; } -synchronize_rcu_expedited() { __fence{sync-rcu}; } +rcu_read_lock() { __fence{rcu_lock}; } +rcu_read_unlock() { __fence{rcu_unlock};} +synchronize_rcu() { __fence{sync_rcu}; } +synchronize_rcu_expedited() { __fence{sync_rcu}; } // Atomic atomic_read(X) READ_ONCE(*X)