linux-kernel - Re: [PATCH v2 2/2] cpuhp: Set cpuhp target for boot cpu

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Message-ID: <xhsmhwne7l3ho.mognet@vschneid.remote.csb>
Date:   Fri, 27 May 2022 10:38:27 +0100
From:   Valentin Schneider <vschneid@...hat.com>
To:     Phil Auld <pauld@...hat.com>, linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v2 2/2] cpuhp: Set cpuhp target for boot cpu

On 26/05/22 12:06, Phil Auld wrote:
> Since the boot cpu does not go through the hotplug process it ends
> up with state == CPUHP_ONLINE but target == CPUHP_OFFLINE.
> Set the target to match in boot_cpu_hotplug_init().
>
> Signed-off-by: Phil Auld <pauld@...hat.com>

Reviewed-by: Valentin Schneider <vschneid@...hat.com>

> ---
>  kernel/cpu.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/kernel/cpu.c b/kernel/cpu.c
> index cdb6ac10ad94..0bb8ad0fa2d9 100644
> --- a/kernel/cpu.c
> +++ b/kernel/cpu.c
> @@ -2677,6 +2677,7 @@ void __init boot_cpu_hotplug_init(void)
>  	cpumask_set_cpu(smp_processor_id(), &cpus_booted_once_mask);
>  #endif
>  	this_cpu_write(cpuhp_state.state, CPUHP_ONLINE);
> +	this_cpu_write(cpuhp_state.target, CPUHP_ONLINE);
>  }
>  
>  /*
> -- 
> 2.18.0