Commit f466ae66 authored by Paul E. McKenney's avatar Paul E. McKenney

rcu: Remove cond_resched() from Tiny synchronize_sched()

It is now legal to invoke synchronize_sched() at early boot, which causes
Tiny RCU's synchronize_sched() to emit spurious splats.  This commit
therefore removes the cond_resched() from Tiny RCU's synchronize_sched().

Fixes: 8b355e3b ("rcu: Drive expedited grace periods from workqueue")
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # 4.9.0-
parent a121103c
...@@ -185,9 +185,6 @@ static __latent_entropy void rcu_process_callbacks(struct softirq_action *unused ...@@ -185,9 +185,6 @@ static __latent_entropy void rcu_process_callbacks(struct softirq_action *unused
* benefits of doing might_sleep() to reduce latency.) * benefits of doing might_sleep() to reduce latency.)
* *
* Cool, huh? (Due to Josh Triplett.) * Cool, huh? (Due to Josh Triplett.)
*
* But we want to make this a static inline later. The cond_resched()
* currently makes this problematic.
*/ */
void synchronize_sched(void) void synchronize_sched(void)
{ {
...@@ -195,7 +192,6 @@ void synchronize_sched(void) ...@@ -195,7 +192,6 @@ void synchronize_sched(void)
lock_is_held(&rcu_lock_map) || lock_is_held(&rcu_lock_map) ||
lock_is_held(&rcu_sched_lock_map), lock_is_held(&rcu_sched_lock_map),
"Illegal synchronize_sched() in RCU read-side critical section"); "Illegal synchronize_sched() in RCU read-side critical section");
cond_resched();
} }
EXPORT_SYMBOL_GPL(synchronize_sched); EXPORT_SYMBOL_GPL(synchronize_sched);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment