From: Thomas Gleixner <tglx@linutronix.de>
To: Qais Yousef <qais.yousef@imgtec.com>
Cc: linux-kernel@vger.kernel.org, jason@lakedaemon.net,
marc.zyngier@arm.com, jiang.liu@linux.intel.com,
ralf@linux-mips.org, linux-mips@linux-mips.org
Subject: Re: [PATCH v2 09/19] genirq: Add a new function to get IPI reverse mapping
Date: Mon, 30 Nov 2015 12:22:15 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1511301220380.3572@nanos> (raw)
In-Reply-To: <565C2ABD.5030409@imgtec.com>
On Mon, 30 Nov 2015, Qais Yousef wrote:
> On 11/30/2015 10:40 AM, Thomas Gleixner wrote:
> > On Fri, 27 Nov 2015, Qais Yousef wrote:
> > > While trying to get my remoteproc driver work with this I uncovered a
> > > problem
> > > with this approach.
> > >
> > > mips-gic doesn't store the actual hwirq in the irq_data. It uses
> > > GIC_SHARED_TO_HWIRQ() and GIC_HWIRQ_TO_SHARED() to add and remove an
> > > offset.
> > Why can't MIPS store the real hwirq number in irq_data?
>
>
> I'm wary of ending up in inconsistency hell where some functions need to deal
> with raw hwirq and others with translated ones.
>
> I will give this a go first and see if it gets really ugly.
Well, the question is why can't those functions not all use the raw
hardware irq. We have it in irq_data exactly to avoid calculations in
the hot path functions.
Thanks,
tglx
next prev parent reply other threads:[~2015-11-30 11:23 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-25 12:06 [PATCH v2 00/19] Implement generic IPI support mechanism Qais Yousef
2015-11-25 12:06 ` [PATCH v2 01/19] genirq: Add new IRQ_DOMAIN_FLAGS_IPI Qais Yousef
2015-11-25 12:06 ` [PATCH v2 02/19] genirq: Add DOMAIN_BUS_IPI Qais Yousef
2015-11-25 12:06 ` [PATCH v2 03/19] genirq: Add GENERIC_IRQ_IPI Kconfig symbol Qais Yousef
2015-11-25 12:06 ` [PATCH v2 04/19] genirq: Add new struct ipi_mask and helper functions Qais Yousef
2015-11-30 11:20 ` Thomas Gleixner
2015-11-30 11:48 ` Qais Yousef
2015-11-30 13:11 ` Thomas Gleixner
2015-11-30 13:57 ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 05/19] genirq: Add struct ipi_mask to irq_data Qais Yousef
2015-11-25 12:06 ` [PATCH v2 06/19] genirq: Add struct ipi_mapping and its helper functions Qais Yousef
2015-11-25 12:06 ` [PATCH v2 07/19] genirq: Make irq_domain_alloc_descs() non static Qais Yousef
2015-11-25 12:06 ` [PATCH v2 08/19] genirq: Add a new generic IPI reservation code to irq core Qais Yousef
2015-11-25 12:06 ` [PATCH v2 09/19] genirq: Add a new function to get IPI reverse mapping Qais Yousef
2015-11-27 11:46 ` Qais Yousef
2015-11-30 10:40 ` Thomas Gleixner
2015-11-30 10:53 ` Qais Yousef
2015-11-30 11:22 ` Thomas Gleixner [this message]
2015-11-30 11:59 ` Qais Yousef
2015-12-01 10:47 ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 10/19] genirq: Add a new irq_send_ipi() to irq_chip Qais Yousef
2015-11-25 12:06 ` [PATCH v2 11/19] genirq: Implement ipi_send_{mask, single}() Qais Yousef
2015-11-25 12:06 ` [PATCH v2 12/19] irqchip/mips-gic: Add a IPI hierarchy domain Qais Yousef
2015-11-25 12:06 ` [PATCH v2 13/19] irqchip/mips-gic: Add device " Qais Yousef
2015-11-25 12:06 ` [PATCH v2 14/19] irqchip/mips-gic: Use gic_vpes instead of NR_CPUS Qais Yousef
2015-11-25 12:06 ` [PATCH v2 15/19] irqchip/mips-gic: Clear percpu_masks correctly when mapping Qais Yousef
2015-11-25 12:06 ` [PATCH v2 16/19] MIPS: Add generic SMP IPI support Qais Yousef
2015-11-25 12:06 ` [PATCH v2 17/19] MIPS: Make smp CMP, CPS and MT use the new generic IPI functions Qais Yousef
2015-11-25 12:06 ` [PATCH v2 18/19] MIPS: Delete smp-gic.c Qais Yousef
2015-11-25 12:06 ` [PATCH v2 19/19] irqchip/mips-gic: Add new DT property to reserve IPIs Qais Yousef
2015-11-25 16:09 ` Rob Herring
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