linux-kernel - Re: [PATCH 0/3] genirq: Make irq_cpu

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Message-ID: <20211022135353.ibze6z67xokbwkts@mobilestation>
Date:   Fri, 22 Oct 2021 16:53:53 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhuacai@...nel.org>,
        Jiaxun Yang <jiaxun.yang@...goat.com>, f.fainelli@...il.com,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 0/3] genirq: Make irq_cpu_{on,off}line() an Octeon-special

Hello Marc

On Thu, Oct 21, 2021 at 06:04:11PM +0100, Marc Zyngier wrote:
> Now that Florian has updated BMIPS to not rely on irq_cpu_offline [1],
> it is pretty tempting to totally get of this misfeature. We can't
> really do that because Octeon uses it like crazy, but the couple of
> other users are easy to convert.
> 
> Once this is done, these helpers are hidden behind a config symbol
> that depends on the Octeon platform being selected. When Octeon is
> finally removed from the tree, we'll be able to drop this as well.

The whole series has been tested in kernel 5.13 running on
Baikal-T1 SoC (2x P5600 cores) with MIPS GIC used as the clock source
and clock event device.
Acked-by: Serge Semin <fancer.lancer@...il.com>

-Sergey

> 
> 
> Marc Zyngier (3):
>   MIPS: loongson64: Drop call to irq_cpu_offline()
>   irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()
>   genirq: Hide irq_cpu_{on,off}line() behind a deprecated option
> 
>  arch/mips/loongson64/smp.c     |  1 -
>  drivers/irqchip/irq-mips-gic.c | 37 ++++++++++++++++++++++++----------
>  include/linux/irq.h            |  5 ++++-
>  kernel/irq/Kconfig             |  7 +++++++
>  kernel/irq/chip.c              |  2 ++
>  5 files changed, 39 insertions(+), 13 deletions(-)
> 
> -- 
> 2.30.2
>