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[73.241.114.122]) by smtp.gmail.com with ESMTPSA id n21sm652294pjo.21.2019.09.17.20.42.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Sep 2019 20:42:38 -0700 (PDT) Date: Tue, 17 Sep 2019 20:42:35 -0700 From: Richard Cochran To: Jianyong Wu Subject: Re: [PATCH 3/6] Timer: expose monotonic clock and counter value Message-ID: <20190918034235.GA1469@localhost> References: <20190917112430.45680-1-jianyong.wu@arm.com> <20190917112430.45680-4-jianyong.wu@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190917112430.45680-4-jianyong.wu@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190917_204241_100678_DEDDADE9 X-CRM114-Status: UNSURE ( 9.76 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark.Rutland@arm.com, justin.he@arm.com, suzuki.poulose@arm.com, netdev@vger.kernel.org, Steve.Capper@arm.com, Will.Deacon@arm.com, linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com, Kaly.Xin@arm.com, maz@kernel.org, pbonzini@redhat.com, nd@arm.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 17, 2019 at 07:24:27AM -0400, Jianyong Wu wrote: > A number of PTP drivers (such as ptp-kvm) are assuming what the > current clock source is, which could lead to interesting effects on > systems where the clocksource can change depending on external events. > > For this purpose, add a new API that retrives both the current > monotonic clock as well as its counter value. > > Signed-off-by: Marc Zyngier > Signed-off-by: Jianyong Wu > --- > include/linux/timekeeping.h | 3 +++ > kernel/time/timekeeping.c | 13 +++++++++++++ > 2 files changed, 16 insertions(+) For core time keeping changes, you must CC lkml, tglx, and John Stultz. Thanks, Richard _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel