linux-kernel - Re: [PATCH v9 2/3] x86,/proc/pid/status: Add AVX-512 usage elapsed time

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Message-ID: <alpine.DEB.2.21.1902120905420.1654@nanos.tec.linutronix.de>
Date:   Tue, 12 Feb 2019 09:22:43 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Aubrey Li <aubrey.li@...el.com>
cc:     mingo@...hat.com, peterz@...radead.org, hpa@...or.com,
        ak@...ux.intel.com, tim.c.chen@...ux.intel.com,
        dave.hansen@...el.com, arjan@...ux.intel.com,
        linux-kernel@...r.kernel.org, Aubrey Li <aubrey.li@...ux.intel.com>
Subject: Re: [PATCH v9 2/3] x86,/proc/pid/status: Add AVX-512 usage elapsed
 time

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