linux-kernel - Re: [PATCH v5 5/5] x86/umwait: Document umwait control sysfs interfaces

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Date:   Mon, 24 Jun 2019 00:42:13 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Fenghua Yu <fenghua.yu@...el.com>
cc:     Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ashok Raj <ashok.raj@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH v5 5/5] x86/umwait: Document umwait control sysfs
 interfaces

On Wed, 19 Jun 2019, Fenghua Yu wrote:
> +Description:	Umwait control
> +
> +		enable_c02: Read/write interface to control umwait C0.2 state
> +			Read returns C0.2 state status:
> +				0: C0.2 is disabled
> +				1: C0.2 is enabled
> +
> +			Write 'Yy1' or [oO][nN] for on to enable C0.2 state.

  Write 'Yy1' ? You meant [Yy1] I assume.

> +			Write 'Nn0' or [oO][fF] for off to disable C0.2 state.
  
What about avoiding all that unreadable confusion?

                        Write 'y' or '1'  or 'on' to enable C0.2 state.
                        Write 'n' or '0'  or 'of' to disable C0.2 state.

                        The interface is case insensitive.
Thanks,

	tglx