linux-kernel - Re: [PATCH V8 1/3] irq: Add flags to request_percpu

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Date:   Thu, 23 Mar 2017 11:34:21 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>
CC:     "nicolas.pitre@...aro.org" <nicolas.pitre@...aro.org>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "vincent.guittot@...aro.org" <vincent.guittot@...aro.org>,
        "kernel@...inux.com" <kernel@...inux.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V8 1/3] irq: Add flags to request_percpu_irq function

On 03/23/2017 10:42 AM, Daniel Lezcano wrote:
> In the next changes, we track the interrupts but we discard the timers as
> that does not make sense. The next interrupt on a timer is predictable.
>
> But, the API request_percpu_irq does not allow to pass a flag, hence specifying
> if the interrupt type is a timer.
>
> Solve this by passing a 'flags' parameter to the function and change all the
> callers to pass IRQF_TIMER when the interrupt is a timer interrupt, zero
> otherwise.
>
> For now, in order to prevent a misusage of this parameter, only the IRQF_TIMER
> flag is a valid parameter to be passed to the request_percpu_irq function.
>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>

Acked-by: Vineet Gupta <vgupta@...opsys.com>   # for arch/arc, arc_timer bits