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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-01-09 23:23:15 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-01-14 21:22:20 -0800
commitf466ae66fa6a599f9a53b5f9bafea4b8cfffa7fb (patch)
tree14a3d519d0ff62417e35ab05bd1b05901b792692 /kernel
parenta121103c922847ba5010819a3f250f1f7fc84ab8 (diff)
downloadop-kernel-dev-f466ae66fa6a599f9a53b5f9bafea4b8cfffa7fb.zip
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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: 8b355e3bc140 ("rcu: Drive expedited grace periods from workqueue") Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> # 4.9.0-
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcu/tiny.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index 1898559..b23a4d0 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -185,9 +185,6 @@ static __latent_entropy void rcu_process_callbacks(struct softirq_action *unused
* benefits of doing might_sleep() to reduce latency.)
*
* 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)
{
@@ -195,7 +192,6 @@ void synchronize_sched(void)
lock_is_held(&rcu_lock_map) ||
lock_is_held(&rcu_sched_lock_map),
"Illegal synchronize_sched() in RCU read-side critical section");
- cond_resched();
}
EXPORT_SYMBOL_GPL(synchronize_sched);
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