diff options
| author | Joel Fernandes (Google) <joel@joelfernandes.org> | 2019-07-16 18:12:22 -0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-08-09 11:00:35 -0700 |
| commit | 28875945ba98d1b47a8a706812b6494d165bb0a0 (patch) | |
| tree | a167811c3e2dfe5de312c187085ed53f21faf831 /include/linux/rcupdate.h | |
| parent | 9147089bee3a6b504821dd8462e2be229e6dbfae (diff) | |
| download | linux-rt-28875945ba98d1b47a8a706812b6494d165bb0a0.tar.gz | |
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 'include/linux/rcupdate.h')
| -rw-r--r-- | include/linux/rcupdate.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index bfcafbc1e301..80d6056f5855 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -221,6 +221,7 @@ int debug_lockdep_rcu_enabled(void); int rcu_read_lock_held(void); int rcu_read_lock_bh_held(void); int rcu_read_lock_sched_held(void); +int rcu_read_lock_any_held(void); #else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ @@ -241,6 +242,12 @@ static inline int rcu_read_lock_sched_held(void) { return !preemptible(); } + +static inline int rcu_read_lock_any_held(void) +{ + return !preemptible(); +} + #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ #ifdef CONFIG_PROVE_RCU |