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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-11-05 05:51:43 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-12-04 10:29:00 -0800
commitdc259accec0845ddf56e87337c0b211026eca0ae (patch)
tree9a2fdb0632650df4937666fd3054866325540fa4 /include/linux/rcupdate.h
parentf2b1760aedba1d8394636ba31b9e864e82527528 (diff)
rcu: Account for rcu_all_qs() in cond_resched()
If cond_resched() returns false, then it has already invoked rcu_all_qs(). This is also invoked (now redundantly) by rcu_note_voluntary_context_switch(). This commit therefore changes cond_resched_rcu_qs() to invoke rcu_note_voluntary_context_switch_lite() instead of rcu_note_voluntary_context_switch() to avoid the redundant invocation of rcu_all_qs(). Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rcupdate.h')
-rw-r--r--include/linux/rcupdate.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index a6ddc42f87a5..7bd8b5a6db10 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -197,7 +197,7 @@ static inline void exit_tasks_rcu_finish(void) { }
#define cond_resched_rcu_qs() \
do { \
if (!cond_resched()) \
- rcu_note_voluntary_context_switch(current); \
+ rcu_note_voluntary_context_switch_lite(current); \
} while (0)
/*