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Date:   Sat, 08 Apr 2023 11:39:27 +0100
Message-ID: <87jzym64kg.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     Vignesh Raghavendra <vigneshr@ti.com>
Cc:     Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
        Santosh Shilimkar <ssantosh@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH RFC v2 1/2] irqchip: irq-ti-sci-inta: Allocates VINTs at probe
In-Reply-To: <20230327-irq-affinity-upstream-v2-1-1474e518f1cb@ti.com>
References: <20230327-irq-affinity-upstream-v2-0-1474e518f1cb@ti.com>
        <20230327-irq-affinity-upstream-v2-1-1474e518f1cb@ti.com>
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On Mon, 27 Mar 2023 16:04:26 +0100,
Vignesh Raghavendra <vigneshr@ti.com> wrote:
> 
> Simplify driver by allocating all VINTs at probe instead of
> allocating on IRQ request. This will allow dedicating few VINTs as
> direct IRQs without aggregation in future.

I think this is going in the wrong direction. Eager allocation is
wasting memory, slowing down boot, and in general a bad idea.

Why can't you just pre-allocate *one* interrupt that serves as a
chained handler for everything, and then use the rest of the interrupt
space for "direct" interrupts?

	M.

-- 
Without deviation from the norm, progress is not possible.