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From: Thomas Shao <huishao@microsoft.com>
To: Mike Surcouf <mps.surcouf.lkml@gmail.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"driverdev-devel@linuxdriverproject.org" 
	<driverdev-devel@linuxdriverproject.org>,
	Olaf Hering <olaf@aepfle.de>, Robo Bot <apw@canonical.com>,
	"jasowang@redhat.com" <jasowang@redhat.com>,
	KY Srinivasan <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>
Subject: RE: [PATCH] Drivers: hv: util: Implement Time Synchronization using host time sample
Date: Fri, 26 Sep 2014 15:13:24 +0000	[thread overview]
Message-ID: <CD2CABCB2C0A0D4682C5F8AD84014154098BC7@HKXPRD3002MB006.064d.mgd.msft.net> (raw)
In-Reply-To: <CAL7Bo8EocBnW28r-QtYU7AvSTyQNdMm39ns5WyM2++rbnJKxrg@mail.gmail.com>

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> -----Original Message-----
> From: Mike Surcouf [mailto:mps.surcouf.lkml@gmail.com]
> Sent: Friday, September 26, 2014 9:52 PM
> To: Thomas Shao
> Cc: gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org;
> driverdev-devel@linuxdriverproject.org; Olaf Hering; Robo Bot;
> jasowang@redhat.com; KY Srinivasan; Haiyang Zhang
> Subject: Re: [PATCH] Drivers: hv: util: Implement Time Synchronization using
> host time sample
> 
> In CENTOS and RHEL 6 and upwards the official way would be to use
> 
> /usr/sbin/tickadj
> 
> which is provided by ntp/chrony package
> 
> This dependency on user space packages that may or may not be installed is
> going to cause a lot of confusion in an already confused space.
> Are we sure theres no other way?

Thanks Mike.
I think another way is to expose the do_adjtimex to kernel module. I'm not sure if there is any concerns. I'll investigate that.
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WARNING: multiple messages have this Message-ID (diff)
From: Thomas Shao <huishao@microsoft.com>
To: Mike Surcouf <mps.surcouf.lkml@gmail.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"driverdev-devel@linuxdriverproject.org"
	<driverdev-devel@linuxdriverproject.org>,
	Olaf Hering <olaf@aepfle.de>, Robo Bot <apw@canonical.com>,
	"jasowang@redhat.com" <jasowang@redhat.com>,
	KY Srinivasan <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>
Subject: RE: [PATCH] Drivers: hv: util: Implement Time Synchronization using host time sample
Date: Fri, 26 Sep 2014 15:13:24 +0000	[thread overview]
Message-ID: <CD2CABCB2C0A0D4682C5F8AD84014154098BC7@HKXPRD3002MB006.064d.mgd.msft.net> (raw)
In-Reply-To: <CAL7Bo8EocBnW28r-QtYU7AvSTyQNdMm39ns5WyM2++rbnJKxrg@mail.gmail.com>



> -----Original Message-----
> From: Mike Surcouf [mailto:mps.surcouf.lkml@gmail.com]
> Sent: Friday, September 26, 2014 9:52 PM
> To: Thomas Shao
> Cc: gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org;
> driverdev-devel@linuxdriverproject.org; Olaf Hering; Robo Bot;
> jasowang@redhat.com; KY Srinivasan; Haiyang Zhang
> Subject: Re: [PATCH] Drivers: hv: util: Implement Time Synchronization using
> host time sample
> 
> In CENTOS and RHEL 6 and upwards the official way would be to use
> 
> /usr/sbin/tickadj
> 
> which is provided by ntp/chrony package
> 
> This dependency on user space packages that may or may not be installed is
> going to cause a lot of confusion in an already confused space.
> Are we sure theres no other way?

Thanks Mike.
I think another way is to expose the do_adjtimex to kernel module. I'm not sure if there is any concerns. I'll investigate that.

  reply	other threads:[~2014-09-26 15:14 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-26 10:02 [PATCH] Drivers: hv: util: Implement Time Synchronization using host time sample Thomas Shao
2014-09-26 11:53 ` Mike Surcouf
2014-09-26 11:53   ` Mike Surcouf
2014-09-26 12:30   ` Thomas Shao
2014-09-26 12:30     ` Thomas Shao
2014-09-26 13:07     ` Mike Surcouf
2014-09-26 13:07       ` Mike Surcouf
2014-09-26 13:52       ` Mike Surcouf
2014-09-26 13:52         ` Mike Surcouf
2014-09-26 15:13         ` Thomas Shao [this message]
2014-09-26 15:13           ` Thomas Shao
  -- strict thread matches above, loose matches on Subject: below --
2014-09-23  5:44 Thomas Shao
2014-09-23  7:56 ` Olaf Hering
2014-09-23  7:56   ` Olaf Hering
2014-09-23  9:47   ` Thomas Shao
2014-09-23  9:47     ` Thomas Shao
2014-09-25  6:07   ` Sitsofe Wheeler
2014-09-25  9:40     ` Thomas Shao
2014-09-25  9:40       ` Thomas Shao

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