linux-kernel - Re: [PATCH v2 2/6] genirq: Allow an interrupt to be marked as 'raw'

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Date:   Tue, 24 Nov 2020 16:56:19 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     LAK <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Valentin Schneider <Valentin.Schneider@....com>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@....linux.org.uk>,
        Android Kernel Team <kernel-team@...roid.com>
Subject: Re: [PATCH v2 2/6] genirq: Allow an interrupt to be marked as 'raw'

On 2020-11-24 16:26, Peter Zijlstra wrote:
> On Tue, Nov 24, 2020 at 02:14:45PM +0000, Marc Zyngier wrote:
>> Some interrupts (such as the rescheduling IPI) rely on not going 
>> through
>> the irq_enter()/irq_exit() calls. To distinguish such interrupts, add
>> a new IRQ flag that allows the low-level handling code to sidestep the
>> enter()/exit() calls.
> 
> Well, not quite. The scheduler_ipi() function is perfectly fine being
> called with irq_enter/irq_exit. As per this very series, that's your
> current reality.
> 
> The function just doesn't need it.

Yup, definitely a very bad choice of words here.
/me goes and repaint the commit message.

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...