diff options
Diffstat (limited to 'tools/memory-model/linux-kernel.bell')
| -rw-r--r-- | tools/memory-model/linux-kernel.bell | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell index 796513362c05..5be86b1025e8 100644 --- a/tools/memory-model/linux-kernel.bell +++ b/tools/memory-model/linux-kernel.bell @@ -24,6 +24,7 @@ instructions RMW[{'once,'acquire,'release}] enum Barriers = 'wmb (*smp_wmb*) || 'rmb (*smp_rmb*) || 'mb (*smp_mb*) || + 'barrier (*barrier*) || 'rcu-lock (*rcu_read_lock*) || 'rcu-unlock (*rcu_read_unlock*) || 'sync-rcu (*synchronize_rcu*) || @@ -33,8 +34,14 @@ enum Barriers = 'wmb (*smp_wmb*) || 'after-unlock-lock (*smp_mb__after_unlock_lock*) instructions F[Barriers] +(* SRCU *) +enum SRCU = 'srcu-lock || 'srcu-unlock || 'sync-srcu +instructions SRCU[SRCU] +(* All srcu events *) +let Srcu = Srcu-lock | Srcu-unlock | Sync-srcu + (* 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 +53,32 @@ 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(rcu-rscs) as unbalanced-rcu-locking +flag ~empty Rcu-unlock \ range(rcu-rscs) as unbalanced-rcu-locking + +(* Compute matching pairs of nested Srcu-lock and Srcu-unlock *) +let srcu-rscs = let rec + unmatched-locks = Srcu-lock \ domain(matched) + and unmatched-unlocks = Srcu-unlock \ range(matched) + and unmatched = unmatched-locks | unmatched-unlocks + and unmatched-po = ([unmatched] ; po ; [unmatched]) & loc + and unmatched-locks-to-unlocks = + ([unmatched-locks] ; po ; [unmatched-unlocks]) & loc + and matched = matched | (unmatched-locks-to-unlocks \ + (unmatched-po ; unmatched-po)) + in matched + +(* Validate nesting *) +flag ~empty Srcu-lock \ domain(srcu-rscs) as unbalanced-srcu-locking +flag ~empty Srcu-unlock \ range(srcu-rscs) as unbalanced-srcu-locking + +(* Check for use of synchronize_srcu() inside an RCU critical section *) +flag ~empty rcu-rscs & (po ; [Sync-srcu] ; po) as invalid-sleep + +(* Validate SRCU dynamic match *) +flag ~empty different-values(srcu-rscs) as srcu-bad-nesting -(* Outermost level of nesting only *) -let crit = matched \ (po^-1 ; matched ; po^-1) +(* Compute marked and plain memory accesses *) +let Marked = (~M) | IW | Once | Release | Acquire | domain(rmw) | range(rmw) | + LKR | LKW | UL | LF | RL | RU +let Plain = M \ Marked |
