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Date:   Tue, 12 Feb 2019 09:22:43 +0100 (CET)
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Aubrey Li <aubrey.li@intel.com>
cc:     mingo@redhat.com, peterz@infradead.org, hpa@zytor.com,
        ak@linux.intel.com, tim.c.chen@linux.intel.com,
        dave.hansen@intel.com, arjan@linux.intel.com,
        linux-kernel@vger.kernel.org, Aubrey Li <aubrey.li@linux.intel.com>
Subject: Re: [PATCH v9 2/3] x86,/proc/pid/status: Add AVX-512 usage elapsed
 time
In-Reply-To: <20190211185931.4386-2-aubrey.li@intel.com>
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References: <20190211185931.4386-1-aubrey.li@intel.com> <20190211185931.4386-2-aubrey.li@intel.com>
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On Tue, 12 Feb 2019, Aubrey Li wrote:
> diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
> index d53c54b842da..60ee932070fe 100644
> --- a/arch/x86/include/asm/processor.h
> +++ b/arch/x86/include/asm/processor.h
> @@ -996,5 +996,7 @@ enum l1tf_mitigations {
>  };
>  
>  extern enum l1tf_mitigations l1tf_mitigation;
> +/* Add support for architecture specific output in /proc/pid/status */
> +extern void arch_proc_pid_status(struct seq_file *m, struct task_struct *task);

Sigh. This is absolutely the wrong place. The weak function is declared and
used in fs/proc/... So the prototype wants to be in a header which is
included from there independent of x86...

Thanks,

	tglx