From 0172d9e322035bf7bb66a7dfdd795c38d71dbba9 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 15 Nov 2018 11:19:44 -0500 Subject: tools/memory-model: Rename some RCU relations In preparation for adding support for SRCU, rename "crit" to "rcu-rscs", rename "rscs" to "rcu-rscsi", and remove the restriction to only the outermost level of nesting. The name change is needed for disambiguating RCU read-side critical sections from SRCU read-side critical sections. Adding the "i" at the end of "rcu-rscsi" emphasizes that the relation is inverted; it links rcu_read_unlock() events to their corresponding preceding rcu_read_lock() events. The restriction to outermost nesting levels was never essential; it was included mostly to show that it could be done. Rather than add equivalent unnecessary code for SRCU lock nesting, it seemed better to remove the existing code. Signed-off-by: Alan Stern Signed-off-by: Paul E. McKenney Tested-by: Andrea Parri --- tools/memory-model/linux-kernel.bell | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'tools/memory-model/linux-kernel.bell') diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell index 796513362c05..353c8d68e030 100644 --- a/tools/memory-model/linux-kernel.bell +++ b/tools/memory-model/linux-kernel.bell @@ -34,7 +34,7 @@ enum Barriers = 'wmb (*smp_wmb*) || instructions F[Barriers] (* Compute matching pairs of nested Rcu-lock and Rcu-unlock *) -let matched = let rec +let rcu-rscs = let rec unmatched-locks = Rcu-lock \ domain(matched) and unmatched-unlocks = Rcu-unlock \ range(matched) and unmatched = unmatched-locks | unmatched-unlocks @@ -46,8 +46,5 @@ 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 - -(* Outermost level of nesting only *) -let crit = matched \ (po^-1 ; matched ; po^-1) +flag ~empty Rcu-lock \ domain(rcu-rscs) as unbalanced-rcu-locking +flag ~empty Rcu-unlock \ range(rcu-rscs) as unbalanced-rcu-locking -- cgit