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authorJoel Fernandes (Google) <joel@joelfernandes.org>2019-07-16 18:12:22 -0400
committerPaul E. McKenney <paulmck@linux.ibm.com>2019-08-09 11:00:35 -0700
commit28875945ba98d1b47a8a706812b6494d165bb0a0 (patch)
treea167811c3e2dfe5de312c187085ed53f21faf831 /kernel/rcu/Kconfig.debug
parent9147089bee3a6b504821dd8462e2be229e6dbfae (diff)
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rcu: Add support for consolidated-RCU reader checking
This commit adds RCU-reader checks to list_for_each_entry_rcu() and hlist_for_each_entry_rcu(). These checks are optional, and are indicated by a lockdep expression passed to a new optional argument to these two macros. If this optional lockdep expression is omitted, these two macros act as before, checking for an RCU read-side critical section. Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> [ paulmck: Update to eliminate return within macro and update comment. ] Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'kernel/rcu/Kconfig.debug')
-rw-r--r--kernel/rcu/Kconfig.debug11
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug
index 5ec3ea4028e2..4aa02eee8f6c 100644
--- a/kernel/rcu/Kconfig.debug
+++ b/kernel/rcu/Kconfig.debug
@@ -8,6 +8,17 @@ menu "RCU Debugging"
config PROVE_RCU
def_bool PROVE_LOCKING
+config PROVE_RCU_LIST
+ bool "RCU list lockdep debugging"
+ depends on PROVE_RCU && RCU_EXPERT
+ default n
+ help
+ Enable RCU lockdep checking for list usages. By default it is
+ turned off since there are several list RCU users that still
+ need to be converted to pass a lockdep expression. To prevent
+ false-positive splats, we keep it default disabled but once all
+ users are converted, we can remove this config option.
+
config TORTURE_TEST
tristate
default n