linux-kernel - Re: [PATCH v4 11/19] x86/ioapic: Use irq_domain_create

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Message-ID: <Y8fKdl/kJJ/3Uymn@hovoldconsulting.com>
Date:   Wed, 18 Jan 2023 11:31:18 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Johan Hovold <johan+linaro@...nel.org>,
        Marc Zyngier <maz@...nel.org>, x86@...nel.org,
        platform-driver-x86@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Philippe Mathieu-Daudé <philmd@...aro.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Mark-PK Tsai <mark-pk.tsai@...iatek.com>
Subject: Re: [PATCH v4 11/19] x86/ioapic: Use irq_domain_create_hierarchy()

On Tue, Jan 17, 2023 at 10:41:36PM +0100, Thomas Gleixner wrote:
> On Mon, Jan 16 2023 at 14:50, Johan Hovold wrote:
> >  
> > -	ip->irqdomain = irq_domain_create_linear(fn, hwirqs, cfg->ops,
> > -						 (void *)(long)ioapic);
> > -
> > +	ip->irqdomain = irq_domain_create_hierarchy(parent, 0, hwirqs, fn,
> > +						    cfg->ops,
> > +						    (void *)(long)ioapic);
> 
> The 80 character limit has been lifted quite some time ago. Please use
> the 100 which are now the norm.

Not everyone agrees, including coding-style.rst:

	The preferred limit on the length of a single line is 80 columns.

	Statements longer than 80 columns should be broken into sensible
	chunks, unless exceeding 80 columns significantly increases
	readability and does not hide information.

I go above 80 chars when it improves readability, but it's still a soft
limit for many of us.

I'll change the above, but not sure trying too hard to fit everything in
one line really improves things in cases like:

-       uv_domain = irq_domain_create_hierarchy(x86_vector_domain, 0, 0, fn,
-                                               &uv_domain_ops, NULL);
+       uv_domain = irq_domain_create_hierarchy(x86_vector_domain, 0, 0, fn, &uv_domain_ops, NULL);

Johan