From: Sudeep Holla <sudeep.holla@arm.com>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Liviu Dudau <liviu.dudau@arm.com>,
linux-arm-kernel@lists.infradead.org,
Sudeep Holla <sudeep.holla@arm.com>
Subject: Re: [PATCH] ARM: vexpress/realview: consolidate immitation CPU hotplug
Date: Thu, 13 Dec 2018 15:41:44 +0000 [thread overview]
Message-ID: <20181213154133.GA17614@e107155-lin> (raw)
In-Reply-To: <E1gXQA4-0007Cl-Qw@rmk-PC.armlinux.org.uk>
On Thu, Dec 13, 2018 at 12:32:16PM +0000, Russell King wrote:
> The only difference between the hotplug implementation for Realview
> and Versatile Express are the bit in the auxiliary control register
> to disable coherency. Combine the two implentations accounting for
> that difference.
>
> Rename the functions to try to discourage cargo-cult copying of this
> code.
>
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> ---
> Please note that this hasn't been compile tested yet.
>
Yes, I had a fix a missed callee site that needs to use unified
versatile_immitation_cpu_die to compile it.
[...]
> diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
> index 742499bac6d0..63c9784f063f 100644
> --- a/arch/arm/mach-vexpress/platsmp.c
> +++ b/arch/arm/mach-vexpress/platsmp.c
> @@ -82,6 +82,13 @@ static void __init vexpress_smp_dt_prepare_cpus(unsigned int max_cpus)
> vexpress_flags_set(__pa_symbol(versatile_secondary_startup));
> }
>
> +#ifdef CONFIG_HOTPLUG_CPU
> +static void vexpress_cpu_die(unsigned int cpu)
> +{
> + versatile_cpu_die(cpu, 0x40);
This should be versatile_immitation_cpu_die(cpu, 0x40)
With that, it looks fine and passed a hotplug tests for a quick/short period
on my TC2. So for mach-vexpress part,
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Regards,
Sudeep
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next prev parent reply other threads:[~2018-12-13 15:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-13 12:32 [PATCH] ARM: vexpress/realview: consolidate immitation CPU hotplug Russell King
2018-12-13 15:41 ` Sudeep Holla [this message]
2018-12-13 15:53 ` Russell King - ARM Linux
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