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From: Thomas Gleixner <tglx@linutronix.de>
To: afzal mohammed <afzal.mohd.ma@gmail.com>,
	linux-kernel@vger.kernel.org,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org, x86@kernel.org,
	linux-sh@vger.kernel.org, linux-s390@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org,
	linux-mips@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
	linux-ia64@vger.kernel.org, linux-hexagon@vger.kernel.org,
	linux-c6x-dev@linux-c6x.org, linux-omap@vger.kernel.org,
	linux-alpha@vger.kernel.org
Cc: Julia Lawall <Julia.Lawall@lip6.fr>,
	Michal Marek <michal.lkml@markovi.net>,
	Nicolas Palix <nicolas.palix@imag.fr>,
	Gilles Muller <Gilles.Muller@lip6.fr>
Subject: Re: [PATCH 00/18] genirq: Remove setup_irq()
Date: Thu, 27 Feb 2020 11:31:15 +0100
Message-ID: <87y2somido.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <cover.1581478323.git.afzal.mohd.ma@gmail.com>

Afzal,

afzal mohammed <afzal.mohd.ma@gmail.com> writes:

> While trying to understand internals of irq handling, came across a
> thread [1] in which tglx was referring to avoid usage of setup_irq().
> Existing callers of setup_irq() reached mostly via 'init_IRQ()' &
> 'time_init()', while memory allocators are ready by 'mm_init()'.
>
> Hence instances of setup_irq() is replaced by request_irq() &
> setup_irq() (along with remove_irq()) definition deleted in the last
> patch.
>
> Seldom remove_irq() usage has been observed coupled with setup_irq(),
> wherever that has been found, it too has been replaced by free_irq().

thanks a lot for tackling this!

Vs. merging this series, I suggest the following approach:

   - Resubmit the individual changes as single patches or small series
     to the relevant maintainers and subsystem mailing lists. They have
     no dependency on a core change and can be applied where they belong
     to.

   - After 5.6-rc6, verify which parts have made their way into
     linux-next and resubmit the ignored ones as a series to me along
     with the removal of the core parts.

That way we can avoid conflicting changes between subsystems and the tip
irq/core branch as much as possible.

Thanks,

        tglx

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  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-12  8:01 afzal mohammed
2020-02-12  8:02 ` [PATCH 02/18] ARM: replace setup_irq() by request_irq() afzal mohammed
2020-02-12  8:10   ` Viresh Kumar
2020-02-12 23:27   ` Alexander Sverdlin
2020-02-12  8:04 ` [PATCH 08/18] MIPS: Replace " afzal mohammed
2020-02-12  8:05 ` [PATCH 16/18] clocksource: " afzal mohammed
2020-02-20 11:13   ` Daniel Lezcano
2020-02-20 14:48   ` Linus Walleij
2020-02-27 10:31 ` Thomas Gleixner [this message]
2020-02-27 11:07   ` [PATCH 00/18] genirq: Remove setup_irq() afzal mohammed
2020-03-21 17:43     ` afzal mohammed
2020-03-27 16:08       ` [PATCH 0/6] Kill setup_irq() afzal mohammed
2020-03-28  2:48         ` Brian Cain
2020-03-28  7:32           ` afzal mohammed
2020-04-02 15:03             ` Brian Cain

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