linux-kernel - Re: [PATCH RFC 10/22] drivers: base: Move cpu_dev_init() after node_dev

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Message-ID: <ZVywLPwhILp083Jk@shell.armlinux.org.uk>
Date:   Tue, 21 Nov 2023 13:27:08 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Gavin Shan <gshan@...hat.com>
Cc:     linux-pm@...r.kernel.org, loongarch@...ts.linux.dev,
        linux-acpi@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, kvmarm@...ts.linux.dev,
        x86@...nel.org, linux-csky@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-parisc@...r.kernel.org, Salil Mehta <salil.mehta@...wei.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        jianyong.wu@....com, justin.he@....com,
        James Morse <james.morse@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH RFC 10/22] drivers: base: Move cpu_dev_init() after
 node_dev_init()

On Mon, Nov 13, 2023 at 08:00:19AM +0000, Russell King (Oracle) wrote:
> On Mon, Nov 13, 2023 at 10:58:46AM +1000, Gavin Shan wrote:
> > 
> > 
> > On 11/7/23 20:30, Russell King (Oracle) wrote:
> > > From: James Morse <james.morse@....com>
> > > 
> > > NUMA systems require the node descriptions to be ready before CPUs are
> > > registered. This is so that the node symlinks can be created in sysfs.
> > > 
> > > Currently no NUMA platform uses GENERIC_CPU_DEVICES, meaning that CPUs
> > > are registered by arch code, instead of cpu_dev_init().
> > > 
> > > Move cpu_dev_init() after node_dev_init() so that NUMA architectures
> > > can use GENERIC_CPU_DEVICES.
> > > 
> > > Signed-off-by: James Morse <james.morse@....com>
> > > Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> > > ---
> > > Note: Jonathan's comment still needs addressing - see
> > >    https://lore.kernel.org/r/20230914121612.00006ac7@Huawei.com
> > > ---
> > >   drivers/base/init.c | 2 +-
> > >   1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > 
> > With Jonathan's comments addressed:
> 
> That needs James' input, which is why I made the note on the patch.

I'm going to be posting the series without RFC soon, and it will be
with Jonathan's comment unaddressed - because as I've said several
times it needs James' input and we have sadly not yet received that.

Short of waiting until James can respond, I don't think there are
any other alternatives.

I do hope we can get this queued up for v6.8 though.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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