linux-kernel - Re: [PATCH] irqchip/jcore: fix lost per-cpu interrupts

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Message-ID: <alpine.DEB.2.20.1610091301390.5222@nanos>
Date:   Sun, 9 Oct 2016 13:03:10 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Rich Felker <dalias@...c.org>
cc:     linux-kernel@...r.kernel.org, linux-sh@...r.kernel.org,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH] irqchip/jcore: fix lost per-cpu interrupts

On Sun, 9 Oct 2016, Rich Felker wrote:
> Ideas for improvement are welcome -- for example the
> irq_is_percpu(irq_desc_get_irq(desc)) thing looks rather silly but I

See the other mail.

> didn't see a better way without poking through abstractions -- but
> overall I think this both solves the timer stall issue that I wasted
> other people's time on, and addresses the concerns about the J-Core
> AIC driver being oblivious to whether an irq is per-cpu.

You could put that knowledge into the device tree so you can decide at
mapping time whether it is per cpu or not.

Thanks,

	tglx