From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Kevin Hilman <khilman@kernel.org>,
ulf.hansson@linaro.org, linux-pm@vger.kernel.org,
daniel.lezcano@linaro.org, rjw@rjwysocki.net,
linux-kernel@vger.kernel.org, Lina Iyer <lina.iyer@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 3/4] irq: Allow multiple clients to register for irq affinity notification
Date: Fri, 26 Sep 2014 10:40:03 +0100 [thread overview]
Message-ID: <20140926094003.GL5182@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <alpine.DEB.2.11.1409261129220.4567@nanos>
On Fri, Sep 26, 2014 at 11:29:56AM +0200, Thomas Gleixner wrote:
> On Thu, 25 Sep 2014, Kevin Hilman wrote:
> > Maybe I'm missing something, or maybe we're just lucky and nobody uses
> > them together, but irq_set_affinity_notifier() only allows a single
> > notifier to be registered at any given time. So if you had a system
>
> A single notifier per irq .....
So what about two drivers wanting to use this notifier, but sharing an
interrupt?
It sounds to me like this notifier was misdesigned from the very start,
and it should always have supported multiple notifiers.
--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
WARNING: multiple messages have this Message-ID (diff)
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 3/4] irq: Allow multiple clients to register for irq affinity notification
Date: Fri, 26 Sep 2014 10:40:03 +0100 [thread overview]
Message-ID: <20140926094003.GL5182@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <alpine.DEB.2.11.1409261129220.4567@nanos>
On Fri, Sep 26, 2014 at 11:29:56AM +0200, Thomas Gleixner wrote:
> On Thu, 25 Sep 2014, Kevin Hilman wrote:
> > Maybe I'm missing something, or maybe we're just lucky and nobody uses
> > them together, but irq_set_affinity_notifier() only allows a single
> > notifier to be registered at any given time. So if you had a system
>
> A single notifier per irq .....
So what about two drivers wanting to use this notifier, but sharing an
interrupt?
It sounds to me like this notifier was misdesigned from the very start,
and it should always have supported multiple notifiers.
--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2014-09-26 9:40 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 20:14 [PATCH v3 0/4] PM QoS: per-cpu PM QoS support Lina Iyer
2014-08-27 20:14 ` Lina Iyer
2014-08-27 20:14 ` [PATCH v3 1/4] QoS: Modify data structures and function arguments for scalability Lina Iyer
2014-08-27 20:14 ` Lina Iyer
2014-08-27 20:14 ` [PATCH v3 2/4] QoS: Enhance framework to support per-cpu PM QoS request Lina Iyer
2014-08-27 20:14 ` Lina Iyer
2014-08-27 20:14 ` [PATCH v3 3/4] irq: Allow multiple clients to register for irq affinity notification Lina Iyer
2014-08-27 20:14 ` Lina Iyer
2014-08-27 20:56 ` Thomas Gleixner
2014-08-27 20:56 ` Thomas Gleixner
2014-09-02 18:43 ` Lina Iyer
2014-09-02 18:43 ` Lina Iyer
2014-09-02 20:56 ` Thomas Gleixner
2014-09-02 20:56 ` Thomas Gleixner
[not found] ` <20140924221023.GD1004@ilina-mac.local>
2014-09-25 15:43 ` Lina Iyer
2014-09-25 15:43 ` Lina Iyer
2014-09-25 15:50 ` Lina Iyer
2014-09-25 15:50 ` Lina Iyer
2014-10-08 15:03 ` Thomas Gleixner
2014-10-08 15:03 ` Thomas Gleixner
2014-10-10 15:11 ` Lina Iyer
2014-10-10 15:11 ` Lina Iyer
2014-10-17 7:29 ` Thomas Gleixner
2014-10-17 7:29 ` Thomas Gleixner
2014-11-18 6:22 ` Lina Iyer
2014-11-18 6:22 ` Lina Iyer
2014-09-25 20:35 ` Kevin Hilman
2014-09-25 20:35 ` Kevin Hilman
2014-09-26 9:29 ` Thomas Gleixner
2014-09-26 9:29 ` Thomas Gleixner
2014-09-26 9:40 ` Russell King - ARM Linux [this message]
2014-09-26 9:40 ` Russell King - ARM Linux
2014-09-26 15:10 ` Kevin Hilman
2014-09-26 15:10 ` Kevin Hilman
2014-10-08 14:20 ` Thomas Gleixner
2014-10-08 14:20 ` Thomas Gleixner
2014-08-27 20:14 ` [PATCH v3 4/4] QoS: Enable PM QoS requests to apply only on smp_affinity of an IRQ Lina Iyer
2014-08-27 20:14 ` Lina Iyer
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