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| author | Sean Paul <seanpaul@chromium.org> | 2019-05-22 16:08:21 -0400 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2019-05-22 16:08:21 -0400 |
| commit | 374ed5429346a021c8e2d26fafce14c5b15dedd0 (patch) | |
| tree | 70739e93443494993197cc11f41c0fd0a0f3aac0 /tools/memory-model/linux-kernel.bell | |
| parent | 270afb37ae34fc1499d166f6edf4bc472f529d96 (diff) | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
Merge drm/drm-next into drm-misc-next
Backmerging 5.2-rc1 to -misc-next for robher
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'tools/memory-model/linux-kernel.bell')
| -rw-r--r-- | tools/memory-model/linux-kernel.bell | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell index 796513362c05..def9131d3d8e 100644 --- a/tools/memory-model/linux-kernel.bell +++ b/tools/memory-model/linux-kernel.bell @@ -33,8 +33,14 @@ 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 +52,27 @@ 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 -(* Outermost level of nesting only *) -let crit = matched \ (po^-1 ; matched ; po^-1) +(* Validate SRCU dynamic match *) +flag ~empty different-values(srcu-rscs) as srcu-bad-nesting |