From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754953AbbGCWOS (ORCPT ); Fri, 3 Jul 2015 18:14:18 -0400 Received: from p3plsmtps2ded03.prod.phx3.secureserver.net ([208.109.80.60]:55900 "EHLO p3plsmtps2ded03.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755646AbbGCWOK (ORCPT ); Fri, 3 Jul 2015 18:14:10 -0400 x-originating-ip: 72.167.245.219 From: "K. Y. Srinivasan" To: x86@kernel.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, jasowang@redhat.com, tglx@linutronix.de Cc: Vivek yadav , "K. Y. Srinivasan" Subject: [PATCH 1/1] x86: Hyper-V: Mark the Hyper-V clocksource as being high resolution Date: Fri, 3 Jul 2015 16:37:23 -0700 Message-Id: <1435966643-3476-1-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vivek yadav By design, alternative clock sources listed are based on the resolution of current clock source. Once you set a high resolution clock, only high resolution sources are returned. Mark Hyper-V clock source as a high resolution clock source. Signed-off-by: Vivek yadav Signed-off-by: K. Y. Srinivasan --- arch/x86/kernel/cpu/mshyperv.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 9b5d7b5..0e507a0 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -151,7 +151,8 @@ static struct clocksource hyperv_cs = { .rating = 400, /* use this when running on Hyperv*/ .read = read_hv_clock, .mask = CLOCKSOURCE_MASK(64), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .flags = CLOCK_SOURCE_IS_CONTINUOUS | + CLOCK_SOURCE_VALID_FOR_HRES, }; static void __init ms_hyperv_init_platform(void) -- 1.7.4.1