linux-kernel - RE: [PATCH] x86/Hyper-V: Fix hv sched clock function return wrong time unit

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Message-ID: <HK0P153MB0273AEB3D64694E8DF31C0B0BFCE0@HK0P153MB0273.APCP153.PROD.OUTLOOK.COM>
Date:   Wed, 25 Mar 2020 18:46:08 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Yubo Xie <ltykernel@...il.com>, KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <liuwe@...rosoft.com>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        Michael Kelley <mikelley@...rosoft.com>
CC:     Yubo Xie <yuboxie@...rosoft.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        vkuznets <vkuznets@...hat.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Tianyu Lan <Tianyu.Lan@...rosoft.com>
Subject: RE: [PATCH] x86/Hyper-V: Fix hv sched clock function return wrong
 time unit

> From: linux-hyperv-owner@...r.kernel.org
> <linux-hyperv-owner@...r.kernel.org> On Behalf Of Yubo Xie
> Sent: Tuesday, March 24, 2020 8:20 AM
> ...
> sched clock callback should return time with nano second as unit
> but current hv callback returns time with 100ns. Fix it.

Hi Yubo,
I'm curious how you found the bug? :-) Did you notice some kind of symtom?

Thanks,
-- Dexuan