linux-kernel - Re: [PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}

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Date:   Wed, 26 Feb 2020 01:35:51 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        rostedt@...dmis.org, mingo@...nel.org, joel@...lfernandes.org,
        gregkh@...uxfoundation.org, gustavo@...eddedor.com,
        tglx@...utronix.de, paulmck@...nel.org, josh@...htriplett.org,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com,
        luto@...nel.org, tony.luck@...el.com, dan.carpenter@...cle.com,
        mhiramat@...nel.org
Subject: Re: [PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}_irqson()

On Fri, Feb 21, 2020 at 02:34:25PM +0100, Peter Zijlstra wrote:
> The functions do in fact use local_irq_{save,restore}() and can
> therefore be used when IRQs are in fact disabled. Worse, they are
> already used in places where IRQs are disabled, leading to great
> confusion when reading the code.
> 
> Rename them to fix this confusion.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Reviewed-by: Paul E. McKenney <paulmck@...nel.org>

FWIW I'd have called that _irqsafe() as irqsave() suggests some return
value to later restore.

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