diff mbox series

[2/2] rcuscale: Remove redundant WARN_ON_ONCE() splat

Message ID 20241024164558.715296-2-urezki@gmail.com (mailing list archive)
State Superseded
Commit 1715e13f68c8e5034ac116b0cf75cf1d3be23dec
Headers show
Series [1/2] rcuscale: Do a proper cleanup if kfree_scale_init() fails | expand

Commit Message

Uladzislau Rezki Oct. 24, 2024, 4:45 p.m. UTC
There are two places where WARN_ON_ONCE() is called two times
in the error paths. One which is encapsulated into if() condition
and another one, which is unnecessary, is placed in the brackets.

Remove an extra WARN_ON_ONCE() splat which is in brackets.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 kernel/rcu/rcuscale.c | 2 --
 1 file changed, 2 deletions(-)

Comments

Paul E. McKenney Oct. 24, 2024, 8:28 p.m. UTC | #1
On Thu, Oct 24, 2024 at 06:45:58PM +0200, Uladzislau Rezki (Sony) wrote:
> There are two places where WARN_ON_ONCE() is called two times
> in the error paths. One which is encapsulated into if() condition
> and another one, which is unnecessary, is placed in the brackets.
> 
> Remove an extra WARN_ON_ONCE() splat which is in brackets.
> 
> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>

For both:

Reviewed-by: Paul E. McKenney <paulmck@kernel.org>

> ---
>  kernel/rcu/rcuscale.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c
> index de7d511e6be4..1d8bb603c289 100644
> --- a/kernel/rcu/rcuscale.c
> +++ b/kernel/rcu/rcuscale.c
> @@ -889,13 +889,11 @@ kfree_scale_init(void)
>  
>  		if (WARN_ON_ONCE(jiffies_at_lazy_cb - jif_start < 2 * HZ)) {
>  			pr_alert("ERROR: call_rcu() CBs are not being lazy as expected!\n");
> -			WARN_ON_ONCE(1);
>  			goto unwind;
>  		}
>  
>  		if (WARN_ON_ONCE(jiffies_at_lazy_cb - jif_start > 3 * HZ)) {
>  			pr_alert("ERROR: call_rcu() CBs are being too lazy!\n");
> -			WARN_ON_ONCE(1);
>  			goto unwind;
>  		}
>  	}
> -- 
> 2.39.5
>
Uladzislau Rezki Oct. 25, 2024, 9:33 a.m. UTC | #2
On Thu, Oct 24, 2024 at 01:28:24PM -0700, Paul E. McKenney wrote:
> On Thu, Oct 24, 2024 at 06:45:58PM +0200, Uladzislau Rezki (Sony) wrote:
> > There are two places where WARN_ON_ONCE() is called two times
> > in the error paths. One which is encapsulated into if() condition
> > and another one, which is unnecessary, is placed in the brackets.
> > 
> > Remove an extra WARN_ON_ONCE() splat which is in brackets.
> > 
> > Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
> 
> For both:
> 
> Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
> 
Thank you :)

--
Uladzislau Rezki
Frederic Weisbecker Oct. 28, 2024, 4:07 p.m. UTC | #3
Le Thu, Oct 24, 2024 at 01:28:24PM -0700, Paul E. McKenney a écrit :
> On Thu, Oct 24, 2024 at 06:45:58PM +0200, Uladzislau Rezki (Sony) wrote:
> > There are two places where WARN_ON_ONCE() is called two times
> > in the error paths. One which is encapsulated into if() condition
> > and another one, which is unnecessary, is placed in the brackets.
> > 
> > Remove an extra WARN_ON_ONCE() splat which is in brackets.
> > 
> > Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
> 
> For both:
> 
> Reviewed-by: Paul E. McKenney <paulmck@kernel.org>

Both applied!

Thanks.
diff mbox series

Patch

diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c
index de7d511e6be4..1d8bb603c289 100644
--- a/kernel/rcu/rcuscale.c
+++ b/kernel/rcu/rcuscale.c
@@ -889,13 +889,11 @@  kfree_scale_init(void)
 
 		if (WARN_ON_ONCE(jiffies_at_lazy_cb - jif_start < 2 * HZ)) {
 			pr_alert("ERROR: call_rcu() CBs are not being lazy as expected!\n");
-			WARN_ON_ONCE(1);
 			goto unwind;
 		}
 
 		if (WARN_ON_ONCE(jiffies_at_lazy_cb - jif_start > 3 * HZ)) {
 			pr_alert("ERROR: call_rcu() CBs are being too lazy!\n");
-			WARN_ON_ONCE(1);
 			goto unwind;
 		}
 	}