linux-kernel - Re: [PATCH v5 net-next 01/15] locking/local_lock: Introduce guard definition for local

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Date: Fri, 7 Jun 2024 10:50:55 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Daniel Bristot de Oliveira <bristot@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Daniel Borkmann <daniel@...earbox.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Frederic Weisbecker <frederic@...nel.org>,
	Ingo Molnar <mingo@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Waiman Long <longman@...hat.com>, Will Deacon <will@...nel.org>
Subject: Re: [PATCH v5 net-next 01/15] locking/local_lock: Introduce guard
 definition for local_lock.

On Fri, Jun 07, 2024 at 08:53:04AM +0200, Sebastian Andrzej Siewior wrote:
> Introduce lock guard definition for local_lock_t. There are no users
> yet.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>

> ---
>  include/linux/local_lock.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/include/linux/local_lock.h b/include/linux/local_lock.h
> index e55010fa73296..82366a37f4474 100644
> --- a/include/linux/local_lock.h
> +++ b/include/linux/local_lock.h
> @@ -51,4 +51,15 @@
>  #define local_unlock_irqrestore(lock, flags)			\
>  	__local_unlock_irqrestore(lock, flags)
>  
> +DEFINE_GUARD(local_lock, local_lock_t __percpu*,
> +	     local_lock(_T),
> +	     local_unlock(_T))
> +DEFINE_GUARD(local_lock_irq, local_lock_t __percpu*,
> +	     local_lock_irq(_T),
> +	     local_unlock_irq(_T))
> +DEFINE_LOCK_GUARD_1(local_lock_irqsave, local_lock_t __percpu,
> +		    local_lock_irqsave(_T->lock, _T->flags),
> +		    local_unlock_irqrestore(_T->lock, _T->flags),
> +		    unsigned long flags)
> +
>  #endif
> -- 
> 2.45.1
>