linux-kernel - Re: [PATCH v4] pinctrl: intel: refine ->irq_set

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Date:   Thu, 15 Jun 2023 18:16:28 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Jadav, Raag" <raag.jadav@...el.com>
Cc:     "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "mika.westerberg@...ux.intel.com" <mika.westerberg@...ux.intel.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Sangannavar, Mallikarjunappa" 
        <mallikarjunappa.sangannavar@...el.com>,
        "N, Pandith" <pandith.n@...el.com>
Subject: Re: [PATCH v4] pinctrl: intel: refine ->irq_set_type() hook

On Thu, Jun 15, 2023 at 03:05:42PM +0000, Jadav, Raag wrote:
> > On Thu, Jun 15, 2023 at 01:35:19PM +0000, Jadav, Raag wrote:

...

> > > add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-9 (-9)
> > > Function                                     old     new   delta
> > > intel_gpio_irq_type                          317     308      -9
> > > Total: Before=10469, After=10460, chg -0.09%
> > 
> > Do I understand correctly that this is your patch + suggested above?
> 
> Yes, this is tested with gcc 7.5.0 with default -O2.
> I see some reordering in disassembly even with this simple change,
> and I'm not entirely sure what kind of weird tricks gcc is pulling here.

For me gcc (Debian 12.2.0-14) 12.2.0 gives the same, +4 bytes.
I am going to apply v4 with suggested tweaks.

-- 
With Best Regards,
Andy Shevchenko