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| author |   Alan Stern <stern@rowland.harvard.edu> | 2018-11-15 11:19:44 -0500 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@linux.ibm.com> | 2019-03-18 10:23:22 -0700 |
| commit | 0172d9e322035bf7bb66a7dfdd795c38d71dbba9 (patch) | |
| tree | 5ff3936ecfaa5a837dca01d296f72741b2f36b77 /tools/memory-model/linux-kernel.cat | |
| parent | Linux 5.1-rc1 (diff) | |
| download | linux-dev-0172d9e322035bf7bb66a7dfdd795c38d71dbba9.tar.xz linux-dev-0172d9e322035bf7bb66a7dfdd795c38d71dbba9.zip | |
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 <stern@rowland.harvard.edu>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Tested-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/memory-model/linux-kernel.cat | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/tools/memory-model/linux-kernel.cat b/tools/memory-model/linux-kernel.cat index 8f23c74a96fd..ab9de9c1234b 100644 --- a/tools/memory-model/linux-kernel.cat +++ b/tools/memory-model/linux-kernel.cat @@ -95,7 +95,7 @@ acyclic pb as propagation * onward on the one hand and from the rcu_read_unlock() backwards on the * other hand. *) -let rscs = po ; crit^-1 ; po? +let rcu-rscsi = po ; rcu-rscs^-1 ; po? (* * The synchronize_rcu() strong fence is special in that it can order not @@ -109,10 +109,10 @@ let rcu-link = hb* ; pb* ; prop * critical sections (joined by rcu-link) acts as a generalized strong fence. *) let rec rcu-fence = gp | - (gp ; rcu-link ; rscs) | - (rscs ; rcu-link ; gp) | - (gp ; rcu-link ; rcu-fence ; rcu-link ; rscs) | - (rscs ; rcu-link ; rcu-fence ; rcu-link ; gp) | + (gp ; rcu-link ; rcu-rscsi) | + (rcu-rscsi ; rcu-link ; gp) | + (gp ; rcu-link ; rcu-fence ; rcu-link ; rcu-rscsi) | + (rcu-rscsi ; rcu-link ; rcu-fence ; rcu-link ; gp) | (rcu-fence ; rcu-link ; rcu-fence) (* rb orders instructions just as pb does *) |