linux-kernel - Re: [PATCH v5 13/18] x86/split_lock: Add a sysfs interface to allow user to enable or disable split lock detection on all CPUs during run time

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Message-ID: <bb21e571-35ad-ac94-d6cd-f0366eaecc7c@intel.com>
Date:   Tue, 12 Mar 2019 18:08:25 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Fenghua Yu <fenghua.yu@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, H Peter Anvin <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Xiaoyao Li <xiaoyao.li@...el.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        x86 <x86@...nel.org>, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v5 13/18] x86/split_lock: Add a sysfs interface to allow
 user to enable or disable split lock detection on all CPUs during run time

On 3/12/19 5:53 PM, Fenghua Yu wrote:
> On Tue, Mar 12, 2019 at 04:48:09PM -0700, Dave Hansen wrote:
>> On 3/12/19 4:00 PM, Fenghua Yu wrote:
>>> The interface /sys/device/system/cpu/split_lock_detect is added
>>> to allow user to control split lock detection and show current split
>>> lock detection setting.
>> Did I miss the Documentation/ for this new sysfs feature?
> I don't have a doc for the interface.
> 
> Should I create a new file in Documentation/ or can I add the interface
> doc in an existing doc file?

I'd suggest spending a few minutes familiarizing yourself with
Documentation/.  Maybe you can even grep for some other similar files in
there and see if those are documented.