linux-kernel - Re: [PATCH v3 0/6] IRQ affinity support in PLIC driver

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Message-ID: <CAAhSdy0t9H4VMSpoZy1Xt2caW_BxOfEA-x-QhnMsbzXned6AUA@mail.gmail.com>
Date:   Mon, 17 Dec 2018 15:07:58 +0530
From:   Anup Patel <anup@...infault.org>
To:     Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>
Cc:     Atish Patra <atish.patra@....com>,
        Christoph Hellwig <hch@...radead.org>,
        linux-riscv@...ts.infradead.org,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/6] IRQ affinity support in PLIC driver

On Fri, Nov 30, 2018 at 1:32 PM Anup Patel <anup@...infault.org> wrote:
>
> This patchset primarily adds IRQ affinity support in PLIC driver and
> other improvements.
>
> The patchset gives mechanism for explicitly routing external interrupts to
> particular CPUs using smp_affinity attribute of each Linux IRQs. Also, we
> can now use IRQ balancer from kernel-space or user-space.
>
> The patchset is tested on QEMU virt machine. It is based on Linux-4.20-rc4
> and can be found at riscv_plic_irq_affinity_v3 branch of:
> https://github.com/avpatel/linux.git
>
> Changes since v2:
>  - Fixed incorrect address of enable registers using sizeof(u32) in PATCH1
>  - Retained comment about need for locking in PATCH1
>  - Split PATCH2 into two patches
>  - Split PATCH3 into two patches
>  - Minor fix in commit description of PATCH4
>
> Changes since v1:
>  - Removed few whitspace changes from PATCH1
>  - Keep use of DEFINE_PER_CPU() as it is
>
> Anup Patel (6):
>   irqchip: sifive-plic: Pre-compute context hart base and enable base
>   irqchip: sifive-plic: Add struct plic_hw for global PLIC HW details
>   irqchip: sifive-plic: More flexible plic_irq_toggle()
>   irqchip: sifive-plic: Add warning in plic_init() if handler already
>     present
>   irqchip: sifive-plic: Differentiate between PLIC handler and context
>   irqchip: sifive-plic: Implement irq_set_affinity() for SMP host
>
>  drivers/irqchip/irq-sifive-plic.c | 143 +++++++++++++++++++-----------
>  1 file changed, 90 insertions(+), 53 deletions(-)
>
> --
> 2.17.1
>

Hi All,

Any comments on this series?

Regards,
Anup