linux-kernel - Re: [RESEND PATCH 2/4] x86/smp: Export symbol cpu_clustergroup

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Message-ID: <20231116144034.GG8262@noisy.programming.kicks-ass.net>
Date:   Thu, 16 Nov 2023 15:40:34 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     kan.liang@...ux.intel.com
Cc:     mingo@...hat.com, linux-kernel@...r.kernel.org,
        artem.bityutskiy@...ux.intel.com, rui.zhang@...el.com
Subject: Re: [RESEND PATCH 2/4] x86/smp: Export symbol cpu_clustergroup_mask

On Thu, Nov 16, 2023 at 06:22:43AM -0800, kan.liang@...ux.intel.com wrote:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> Intel cstate PMU driver will invoke the topology_cluster_cpumask() to
> retrieve the CPU mask of a cluster. A modpost error is triggered since
> the symbol cpu_clustergroup_mask is not exported.
> 
> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
> ---
>  arch/x86/kernel/smpboot.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
> index 48e040618731..376387ca6be5 100644
> --- a/arch/x86/kernel/smpboot.c
> +++ b/arch/x86/kernel/smpboot.c
> @@ -747,6 +747,7 @@ const struct cpumask *cpu_clustergroup_mask(int cpu)
>  {
>  	return cpu_l2c_shared_mask(cpu);
>  }
> +EXPORT_SYMBOL(cpu_clustergroup_mask);

I made that _GPL.

Queued the lot.