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From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-mips@vger.kernel.org, maz@kernel.org, chenhc@lemote.com
Subject: Re: [RFC PATCH 0/6] MIPS: Handle CPU IRQ in domain's way
Date: Thu, 26 Mar 2020 16:38:49 +0100
Message-ID: <20200326153849.GA14951@alpha.franken.de> (raw)
In-Reply-To: <20200326061704.387483-1-jiaxun.yang@flygoat.com>

On Thu, Mar 26, 2020 at 02:16:56PM +0800, Jiaxun Yang wrote:
> In [1], we discussed about why MIPS CPU IRQ doesn't fit simple IRQ domain.
> I felt it's time to remove this barrier and "modernize" the whole flow.
> 
> This set is simply a proof of concept of removing the whole MIPS_CPU_IRQ_BASE
> and use the irq_domain's way.
> 
> Currently only Loongson64 and ip22 are adapted for testing purpose,
> if everybody is happy with it, then I'll take a look at more platforms.
> 
> Btw: Thomas, are you still willing to drop some platforms in 5.8?

yes, I didn't receive feedback to not drop them. So after merge
window is over I'm going to post a patch to remove LASAT, NEC_MARKEINS
and PMC_MSP.

>  arch/mips/include/asm/irq_cpu.h      | 19 +++++++++++++++++-
>  arch/mips/include/asm/sgi/ip22.h     | 30 ++++++++++++++--------------
>  arch/mips/kernel/cevt-r4k.c          |  2 +-
>  arch/mips/kernel/perf_event_mipsxx.c |  3 ++-
>  arch/mips/kernel/rtlx-mt.c           |  7 +++++--
>  arch/mips/loongson64/smp.c           |  6 ++++--
>  arch/mips/sgi-ip22/ip22-int.c        | 14 ++++++++-----
>  drivers/irqchip/irq-mips-cpu.c       | 22 ++++++++++++++------
>  8 files changed, 70 insertions(+), 33 deletions(-)

Adding more code for doing the same thing doesn't sound like the
best approach. Is there a big need for that change (like someone
getting rid of irq_domain_add_legacy) ?

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]

  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26  6:16 Jiaxun Yang
2020-03-26  6:16 ` [RFC PATCH 1/6] MIPS: irq_cpu: Add a helper to map virq for CPU IRQ Jiaxun Yang
2020-03-26  6:16 ` [PATCH 1/2] MIPS: Kill MIPS_GIC_IRQ_BASE Jiaxun Yang
2020-03-26  6:16 ` [RFC PATCH 2/6] irqchip: mips-cpu: Allocate fwnode for non-DT platforms Jiaxun Yang
2020-03-26  6:17 ` [PATCH 2/2] MIPS: Kill RM7K & RM9K IRQ Code Jiaxun Yang
2020-03-26  6:17 ` [RFC PATCH 3/6] irqchip: mips-cpu: Convert to simple domain Jiaxun Yang
2020-03-26  6:17 ` [RFC PATCH 4/6] MIPS: kernel: Use mips_cpu_map_virq helper Jiaxun Yang
2020-03-26  6:17 ` [RFC PATCH 5/6] MIPS: loongson64: " Jiaxun Yang
2020-03-26  6:20 ` [RFC PATCH 6/6] MIPS: ip22: " Jiaxun Yang
2020-03-26 15:38 ` Thomas Bogendoerfer [this message]
2020-03-26 15:46   ` [RFC PATCH 0/6] MIPS: Handle CPU IRQ in domain's way Marc Zyngier

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