All of lore.kernel.org
 help / color / mirror / Atom feed
From: Qais Yousef <qais.yousef@imgtec.com>
To: Thomas Gleixner <tglx@linutronix.de>
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: Tue, 1 Dec 2015 10:47:05 +0000	[thread overview]
Message-ID: <565D7AA9.2080708@imgtec.com> (raw)
In-Reply-To: <565C3A14.10401@imgtec.com>

On 11/30/2015 11:59 AM, Qais Yousef wrote:
> On 11/30/2015 11:22 AM, Thomas Gleixner wrote:
>> 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.
>>
>
>
> I'll see what I can do as part of this series. I think I can fix the 
> new IPI and device domains, but can't promise about the root gic 
> domain. It might be too big of a change for this series.


Unfortunately this is more work than I can afford putting into it right 
now. Can we have this fix coming in later? It shouldn't affect anything 
in this series.

The major issue here is that I need to split the root domain into shared 
and local so that each will have its linear hwirq space therefore get 
rid of the conversion macros.

BUT, the DT binding will break if I do this. I can't think of a simple 
way to keep the existing binding and do the split. Not without hackery 
and more magic at least which I don't think would be a better alternative.

Thanks,
Qais

WARNING: multiple messages have this Message-ID (diff)
From: Qais Yousef <qais.yousef@imgtec.com>
To: Thomas Gleixner <tglx@linutronix.de>
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: Tue, 1 Dec 2015 10:47:05 +0000	[thread overview]
Message-ID: <565D7AA9.2080708@imgtec.com> (raw)
Message-ID: <20151201104705.Clq96d6XDCglqJiR1jyxe-8CAGQG76d4zS4EZ73UaoM@z> (raw)
In-Reply-To: <565C3A14.10401@imgtec.com>

On 11/30/2015 11:59 AM, Qais Yousef wrote:
> On 11/30/2015 11:22 AM, Thomas Gleixner wrote:
>> 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.
>>
>
>
> I'll see what I can do as part of this series. I think I can fix the 
> new IPI and device domains, but can't promise about the root gic 
> domain. It might be too big of a change for this series.


Unfortunately this is more work than I can afford putting into it right 
now. Can we have this fix coming in later? It shouldn't affect anything 
in this series.

The major issue here is that I need to split the root domain into shared 
and local so that each will have its linear hwirq space therefore get 
rid of the conversion macros.

BUT, the DT binding will break if I do this. I can't think of a simple 
way to keep the existing binding and do the split. Not without hackery 
and more magic at least which I don't think would be a better alternative.

Thanks,
Qais

  reply	other threads:[~2015-12-01 10:47 UTC|newest]

Thread overview: 57+ 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 ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 02/19] genirq: Add DOMAIN_BUS_IPI Qais Yousef
2015-11-25 12:06   ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 04/19] genirq: Add new struct ipi_mask and helper functions Qais Yousef
2015-11-25 12:06   ` Qais Yousef
2015-11-30 11:20   ` Thomas Gleixner
2015-11-30 11:48     ` Qais Yousef
2015-11-30 11:48       ` Qais Yousef
2015-11-30 13:11       ` Thomas Gleixner
2015-11-30 13:57         ` Qais Yousef
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   ` 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   ` 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   ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 09/19] genirq: Add a new function to get IPI reverse mapping Qais Yousef
2015-11-25 12:06   ` Qais Yousef
2015-11-27 11:46   ` 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 10:53         ` Qais Yousef
2015-11-30 11:22         ` Thomas Gleixner
2015-11-30 11:59           ` Qais Yousef
2015-11-30 11:59             ` Qais Yousef
2015-12-01 10:47             ` Qais Yousef [this message]
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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 11/19] genirq: Implement ipi_send_{mask, single}() Qais Yousef
2015-11-25 12:06   ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 13/19] irqchip/mips-gic: Add device " Qais Yousef
2015-11-25 12:06   ` 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   ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 16/19] MIPS: Add generic SMP IPI support Qais Yousef
2015-11-25 12:06   ` 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   ` Qais Yousef
2015-11-25 12:06 ` [PATCH v2 18/19] MIPS: Delete smp-gic.c Qais Yousef
2015-11-25 12:06   ` 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 12:06   ` Qais Yousef
2015-11-25 16:09   ` Rob Herring

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=565D7AA9.2080708@imgtec.com \
    --to=qais.yousef@imgtec.com \
    --cc=jason@lakedaemon.net \
    --cc=jiang.liu@linux.intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mips@linux-mips.org \
    --cc=marc.zyngier@arm.com \
    --cc=ralf@linux-mips.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.