From: Marc Zyngier <marc.zyngier@arm.com>
To: Yang Yingliang <yangyingliang@huawei.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Mark Rutland <mark.rutland@arm.com>,
Will Deacon <will.deacon@arm.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Hanjun Guo <hanjun.guo@linaro.org>
Subject: Re: [RFC PATCH v4 2/4] genirq: add move_irqs() for cpu hotplug
Date: Thu, 17 Sep 2015 17:44:38 +0100 [thread overview]
Message-ID: <55FAEDF6.6060000@arm.com> (raw)
In-Reply-To: <1442467166-1460-3-git-send-email-yangyingliang@huawei.com>
On 17/09/15 06:19, Yang Yingliang wrote:
> Add move_irqs() into kernel/irq/migration.c.
> So we can use it to migrate interrupts, when
> cpu is offline.
>
> Cc: Jiang Liu <jiang.liu@linux.intel.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Marc Zyngier <marc.zyngier@arm.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
> Cc: Hanjun Guo <hanjun.guo@linaro.org>
> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
> ---
> include/linux/irq.h | 4 +++
> kernel/irq/migration.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 70 insertions(+)
>
> diff --git a/include/linux/irq.h b/include/linux/irq.h
> index 6f8b340..64e3a02 100644
> --- a/include/linux/irq.h
> +++ b/include/linux/irq.h
> @@ -446,6 +446,10 @@ static inline void irq_move_irq(struct irq_data *data) { }
> static inline void irq_move_masked_irq(struct irq_data *data) { }
> #endif
>
> +#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_IRQ_MIGRATION) && defined(CONFIG_HOTPLUG_CPU)
> +void move_irqs(void);
> +#endif
> +
I don't think having this prototype guarded by this #if is very useful.
You can probably leave it standalone.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2015-09-17 16:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-17 5:19 [RFC PATCH v4 0/4] arm/arm64: fix a migrating irq bug when hotplug cpu Yang Yingliang
2015-09-17 5:19 ` [RFC PATCH v4 1/4] genirq: introduce CONFIG_GENERIC_IRQ_MIGRATION Yang Yingliang
2015-09-17 5:19 ` [RFC PATCH v4 2/4] genirq: add move_irqs() for cpu hotplug Yang Yingliang
2015-09-17 16:44 ` Marc Zyngier [this message]
2015-09-17 22:04 ` Thomas Gleixner
2015-09-17 22:09 ` Russell King - ARM Linux
2015-09-18 1:13 ` Yang Yingliang
2015-09-17 5:19 ` [RFC PATCH v4 3/4] arm64: fix a migrating irq bug when hotplug cpu Yang Yingliang
2015-09-17 16:01 ` Will Deacon
2015-09-17 5:19 ` [RFC PATCH v4 4/4] arm: " Yang Yingliang
2015-09-17 22:10 ` [RFC PATCH v4 0/4] arm/arm64: " Thomas Gleixner
2015-09-18 1:14 ` Yang Yingliang
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