rcu_all_qs() is defined for !CONFIG_PREEMPT_RCU but the declaration
is conditioned on CONFIG_PREEMPTION.

With CONFIG_PREEMPT_LAZY, CONFIG_PREEMPTION=y does not imply
CONFIG_PREEMPT_RCU=y.

Decouple the two.

Cc: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
---
 include/linux/rcutree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 90a684f94776..ae8b5cb475a3 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -104,7 +104,7 @@ extern int rcu_scheduler_active;
 void rcu_end_inkernel_boot(void);
 bool rcu_inkernel_boot_has_ended(void);
 bool rcu_is_watching(void);
-#ifndef CONFIG_PREEMPTION
+#ifndef CONFIG_PREEMPT_RCU
 void rcu_all_qs(void);
 #endif
 
-- 
2.43.5

On 2024-11-06 12:17:53 [-0800], Ankur Arora wrote:
> rcu_all_qs() is defined for !CONFIG_PREEMPT_RCU but the declaration
> is conditioned on CONFIG_PREEMPTION.
> 
> With CONFIG_PREEMPT_LAZY, CONFIG_PREEMPTION=y does not imply
> CONFIG_PREEMPT_RCU=y.
> 
> Decouple the two.
> 
> Cc: Paul E. McKenney <paulmck@kernel.org>
> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Sebastian

Sebastian Andrzej Siewior <bigeasy@linutronix.de> writes:

> On 2024-11-06 12:17:53 [-0800], Ankur Arora wrote:
>> rcu_all_qs() is defined for !CONFIG_PREEMPT_RCU but the declaration
>> is conditioned on CONFIG_PREEMPTION.
>>
>> With CONFIG_PREEMPT_LAZY, CONFIG_PREEMPTION=y does not imply
>> CONFIG_PREEMPT_RCU=y.
>>
>> Decouple the two.
>>
>> Cc: Paul E. McKenney <paulmck@kernel.org>
>> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
>
> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Thanks!

--
ankur

Le Wed, Nov 06, 2024 at 12:17:53PM -0800, Ankur Arora a écrit :
> rcu_all_qs() is defined for !CONFIG_PREEMPT_RCU but the declaration
> is conditioned on CONFIG_PREEMPTION.
> 
> With CONFIG_PREEMPT_LAZY, CONFIG_PREEMPTION=y does not imply
> CONFIG_PREEMPT_RCU=y.
> 
> Decouple the two.
> 
> Cc: Paul E. McKenney <paulmck@kernel.org>
> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>

Reviewed-by: Frederic Weisbecker <frederic@kernel.org>