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Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi

From Qais Yousef <qais.yousef@imgtec.com>
Newsgroups linux.kernel
Subject Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi
Date 2015-08-24 15:10 +0200
Message-ID <q0ZFD-9c-5@gated-at.bofh.it> (permalink)
References <q0ZcD-7Np-13@gated-at.bofh.it> <q0ZcD-7Np-25@gated-at.bofh.it> <q0Zmj-7YS-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 08/24/2015 01:49 PM, Thomas Gleixner wrote:
> On Mon, 24 Aug 2015, Qais Yousef wrote:
>
>> Some drivers might require to send ipi to other cores. So export it.
> Which IPIs do you need to send from a driver which are not exposed by
> the SMP functions already?

It's not an SMP IPI. We use GIC to exchange interrupts between AXD and 
the host system since AXD is another MIPS core in the cluster.

>> This will be used later by AXD driver.
> That smells fishy and it wants a proper explanation WHY and not just a
> sloppy statement that it will be used later. I can figure that out
> myself as exporting a function without using it does not make any sense.

Sorry for the terse explanation. As pointed above AXD uses GIC to send 
and receive interrupts to the host core. Without this change I can't 
compile the driver as a driver module because the symbol is not exported.

Does this make things clearer?

Thanks,
Qais

>
> Thanks,
>
> 	tglx

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Thread

[PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-24 14:40 +0200
  Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-24 14:50 +0200
    Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-24 15:10 +0200
      Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Marc Zyngier <marc.zyngier@arm.com> - 2015-08-24 15:40 +0200
        Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-24 16:30 +0200
          Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-24 17:10 +0200
            Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-24 18:40 +0200
              Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Marc Zyngier <marc.zyngier@arm.com> - 2015-08-24 19:20 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-26 13:30 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-26 15:30 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-26 17:00 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-26 17:10 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-26 17:50 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-26 23:50 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-27 04:30 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-28 12:40 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-28 16:30 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-28 17:20 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-09-02 11:40 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Marc Zyngier <marc.zyngier@arm.com> - 2015-09-02 12:00 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-09-02 12:50 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Marc Zyngier <marc.zyngier@arm.com> - 2015-09-02 14:00 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-09-02 15:30 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Marc Zyngier <marc.zyngier@arm.com> - 2015-09-02 16:20 +0200
                Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Jason Cooper <jason@lakedaemon.net> - 2015-09-02 14:20 +0200
      Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Thomas Gleixner <tglx@linutronix.de> - 2015-08-24 17:00 +0200
        Re: [PATCH 01/10] irqchip: irq-mips-gic: export gic_send_ipi Qais Yousef <qais.yousef@imgtec.com> - 2015-08-24 17:20 +0200

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