Re: [PATCH v6 01/11] ARM: sunxi: smp: Move assembly code into a file

From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: "Mylène Josserand" <mylene.josserand@bootlin.com>,
	"Russell King" <linux@armlinux.org.uk>,
	"Marc Zyngier" <marc.zyngier@arm.com>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Rob Herring" <robh+dt@kernel.org>, Simon <horms@verge.net.au>,
	"Geert Uytterhoeven" <geert@linux-m68k.org>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"open list:ARM/SHMOBILE ARM..."
	<linux-renesas-soc@vger.kernel.org>,
	devicetree <devicetree@vger.kernel.org>,
	"LABBE Corentin" <clabbe.montjoie@gmail.com>,
	"Quentin Schulz" <quentin.schulz@bootlin.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 01/11] ARM: sunxi: smp: Move assembly code into a file
Date: Wed, 18 Apr 2018 10:45:35 +0200	[thread overview]
Message-ID: <20180418084535.lqdvjgcbxtnwqwri@flea> (raw)
In-Reply-To: <CAGb2v67qvk=T7u7bOjVZ7q_qsjJuEOM6iarw7by42ga=EYuYDg@mail.gmail.com>

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On Tue, Apr 17, 2018 at 07:25:15PM +0800, Chen-Yu Tsai wrote:
> On Tue, Apr 17, 2018 at 7:17 PM, Maxime Ripard
> <maxime.ripard@bootlin.com> wrote:
> > On Tue, Apr 17, 2018 at 11:12:41AM +0800, Chen-Yu Tsai wrote:
> >> On Tue, Apr 17, 2018 at 5:50 AM, Mylène Josserand
> >> <mylene.josserand@bootlin.com> wrote:
> >> > Move the assembly code for cluster cache enabling and resuming
> >> > into an assembly file instead of having it directly in C code.
> >> >
> >> > Remove the CFLAGS because we are using the ARM directive "arch"
> >> > instead.
> >> >
> >> > Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
> >> > ---
> >> >  arch/arm/mach-sunxi/Makefile  |  4 +--
> >> >  arch/arm/mach-sunxi/headsmp.S | 80 +++++++++++++++++++++++++++++++++++++++++
> >> >  arch/arm/mach-sunxi/mc_smp.c  | 82 +++----------------------------------------
> >> >  3 files changed, 85 insertions(+), 81 deletions(-)
> >> >  create mode 100644 arch/arm/mach-sunxi/headsmp.S
> >>
> >> I'm still not convinced about this whole "move ASM to separate
> >> file" thing, especially now that you aren't actually adding any
> >> sunxi-specific ASM code beyond a simple function call.
> >>
> >> Could you drop this for now?
> >
> > I'd really like to have this merged actually. There's a significant
> > readibility improvement, so even if there's no particular functional
> > improvement, I'd still call it a win.
> 
> What parts do you consider hard to read? The extra quotes? Trailing
> newline? Or perhaps the __stringify bits?

All of this, plus the clobbers and operands.

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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