change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/tools/memory-model/linux-kernel.bell
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@@ -24,16 +24,24 @@
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 enum Barriers = 'wmb (*smp_wmb*) ||
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 		'rmb (*smp_rmb*) ||
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 		'mb (*smp_mb*) ||
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+		'barrier (*barrier*) ||
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 		'rcu-lock (*rcu_read_lock*)  ||
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 		'rcu-unlock (*rcu_read_unlock*) ||
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 		'sync-rcu (*synchronize_rcu*) ||
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 		'before-atomic (*smp_mb__before_atomic*) ||
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 		'after-atomic (*smp_mb__after_atomic*) ||
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-		'after-spinlock (*smp_mb__after_spinlock*)
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+		'after-spinlock (*smp_mb__after_spinlock*) ||
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+		'after-unlock-lock (*smp_mb__after_unlock_lock*)
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 instructions F[Barriers]
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+(* SRCU *)
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+enum SRCU = 'srcu-lock || 'srcu-unlock || 'sync-srcu
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+instructions SRCU[SRCU]
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+(* All srcu events *)
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+let Srcu = Srcu-lock | Srcu-unlock | Sync-srcu
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+
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 (* Compute matching pairs of nested Rcu-lock and Rcu-unlock *)
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-let matched = let rec
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+let rcu-rscs = let rec
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 	    unmatched-locks = Rcu-lock \ domain(matched)
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 	and unmatched-unlocks = Rcu-unlock \ range(matched)
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 	and unmatched = unmatched-locks | unmatched-unlocks
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@@ -45,8 +53,32 @@
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 	in matched
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 (* Validate nesting *)
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-flag ~empty Rcu-lock \ domain(matched) as unbalanced-rcu-locking
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-flag ~empty Rcu-unlock \ range(matched) as unbalanced-rcu-locking
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+flag ~empty Rcu-lock \ domain(rcu-rscs) as unbalanced-rcu-locking
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+flag ~empty Rcu-unlock \ range(rcu-rscs) as unbalanced-rcu-locking
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-(* Outermost level of nesting only *)
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-let crit = matched \ (po^-1 ; matched ; po^-1)
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+(* Compute matching pairs of nested Srcu-lock and Srcu-unlock *)
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+let srcu-rscs = let rec
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+	    unmatched-locks = Srcu-lock \ domain(matched)
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+	and unmatched-unlocks = Srcu-unlock \ range(matched)
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+	and unmatched = unmatched-locks | unmatched-unlocks
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+	and unmatched-po = ([unmatched] ; po ; [unmatched]) & loc
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+	and unmatched-locks-to-unlocks =
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+		([unmatched-locks] ; po ; [unmatched-unlocks]) & loc
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+	and matched = matched | (unmatched-locks-to-unlocks \
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+		(unmatched-po ; unmatched-po))
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+	in matched
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+
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+(* Validate nesting *)
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+flag ~empty Srcu-lock \ domain(srcu-rscs) as unbalanced-srcu-locking
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+flag ~empty Srcu-unlock \ range(srcu-rscs) as unbalanced-srcu-locking
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+
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+(* Check for use of synchronize_srcu() inside an RCU critical section *)
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+flag ~empty rcu-rscs & (po ; [Sync-srcu] ; po) as invalid-sleep
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+
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+(* Validate SRCU dynamic match *)
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+flag ~empty different-values(srcu-rscs) as srcu-bad-nesting
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+
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+(* Compute marked and plain memory accesses *)
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+let Marked = (~M) | IW | Once | Release | Acquire | domain(rmw) | range(rmw) |
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+		LKR | LKW | UL | LF | RL | RU
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+let Plain = M \ Marked