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[77.130.112.4]) by smtp.googlemail.com with ESMTPSA id d6sm12065156wrp.9.2019.04.15.05.16.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Apr 2019 05:16:50 -0700 (PDT) Subject: Re: [PATCH 7/7] clocksource/arm_arch_timer: Use arch_timer_read_counter to access stable counters To: Marc Zyngier , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20190408154907.223536-1-marc.zyngier@arm.com> <20190408154907.223536-8-marc.zyngier@arm.com> From: Daniel Lezcano Message-ID: <2a60a031-1eab-2d5e-89ff-b5d516545eeb@linaro.org> Date: Mon, 15 Apr 2019 14:16:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190408154907.223536-8-marc.zyngier@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190415_051652_867248_E16585A7 X-CRM114-Status: GOOD ( 17.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Russell King , Catalin Marinas , Will Deacon , Wim Van Sebroeck , Valentin Schneider , Guenter Roeck Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMDgvMDQvMjAxOSAxNzo0OSwgTWFyYyBaeW5naWVyIHdyb3RlOgo+IEluc3RlYWQgb2YgYWx3 YXlzIGdvaW5nIHZpYSBhcmNoX2NvdW50ZXJfZ2V0X2NudHZjdF9zdGFibGUgdG8KPiBhY2Nlc3Mg dGhlIGNvdW50ZXIgd29ya2Fyb3VuZCwgbGV0J3MgaGF2ZSBhcmNoX3RpbWVyX3JlYWRfY291bnRl cgo+IHRvIHBvaW50IHRvIHRoZSByaWdodCBtZXRob2QuCj4gCj4gRm9yIHRoYXQsIHdlIG5lZWQg dG8gdHJhY2sgd2hldGhlciBhbnkgQ1BVIGluIHRoZSBzeXN0ZW0gaGFzIGEKPiB3b3JrYXJvdW5k IGZvciB0aGUgY291bnRlci4gVGhpcyBpcyBkb25lIGJ5IGhhdmluZyBhbiBhdG9taWMKPiB2YXJp YWJsZSB0cmFja2luZyB0aGlzLgo+IAo+IFNpZ25lZC1vZmYtYnk6IE1hcmMgWnluZ2llciA8bWFy Yy56eW5naWVyQGFybS5jb20+Cj4gLS0tCgpbIC4uLiBdCgo+ICsKPiAgLyoKPiAgICogRGVmYXVs dCB0byBjcDE1IGJhc2VkIGFjY2VzcyBiZWNhdXNlIGFybTY0IHVzZXMgdGhpcyBmdW5jdGlvbiBm b3IKPiAgICogc2NoZWRfY2xvY2soKSBiZWZvcmUgRFQgaXMgcHJvYmVkIGFuZCB0aGUgY3AxNSBt ZXRob2QgaXMgZ3VhcmFudGVlZAo+IEBAIC0zNzIsNiArMzkyLDcgQEAgc3RhdGljIHUzMiBub3Ry YWNlIHN1bjUwaV9hNjRfcmVhZF9jbnR2X3R2YWxfZWwwKHZvaWQpCj4gIERFRklORV9QRVJfQ1BV KGNvbnN0IHN0cnVjdCBhcmNoX3RpbWVyX2VycmF0dW1fd29ya2Fyb3VuZCAqLCB0aW1lcl91bnN0 YWJsZV9jb3VudGVyX3dvcmthcm91bmQpOwo+ICBFWFBPUlRfU1lNQk9MX0dQTCh0aW1lcl91bnN0 YWJsZV9jb3VudGVyX3dvcmthcm91bmQpOwo+ICAKPiArc3RhdGljIGF0b21pY190IHRpbWVyX3Vu c3RhYmxlX2NvdW50ZXJfd29ya2Fyb3VuZF9pbl91c2UgPSBBVE9NSUNfSU5JVCgwKTsKCldvdWxk bid0IG1ha2Ugc2Vuc2UgdG8gUkVBRF9PTkNFIC8gV1JJVEVfT05DRSBpbnN0ZWFkIG9mIHVzaW5n IGFuIGF0b21pYz8KCj4gIHN0YXRpYyB2b2lkIGVycmF0dW1fc2V0X25leHRfZXZlbnRfdHZhbF9n ZW5lcmljKGNvbnN0IGludCBhY2Nlc3MsIHVuc2lnbmVkIGxvbmcgZXZ0LAo+ICAJCQkJCQlzdHJ1 Y3QgY2xvY2tfZXZlbnRfZGV2aWNlICpjbGspCj4gQEAgLTU1MCw2ICs1NzEsOSBAQCB2b2lkIGFy Y2hfdGltZXJfZW5hYmxlX3dvcmthcm91bmQoY29uc3Qgc3RydWN0IGFyY2hfdGltZXJfZXJyYXR1 bV93b3JrYXJvdW5kICp3YQo+ICAJCQlwZXJfY3B1KHRpbWVyX3Vuc3RhYmxlX2NvdW50ZXJfd29y a2Fyb3VuZCwgaSkgPSB3YTsKPiAgCX0KPiAgCj4gKwlpZiAod2EtPnJlYWRfY250dmN0X2VsMCB8 fCB3YS0+cmVhZF9jbnRwY3RfZWwwKQo+ICsJCWF0b21pY19zZXQoJnRpbWVyX3Vuc3RhYmxlX2Nv dW50ZXJfd29ya2Fyb3VuZF9pbl91c2UsIDEpOwo+ICsKClsgLi4uIF0KCi0tIAogPGh0dHA6Ly93 d3cubGluYXJvLm9yZy8+IExpbmFyby5vcmcg4pSCIE9wZW4gc291cmNlIHNvZnR3YXJlIGZvciBB Uk0gU29DcwoKRm9sbG93IExpbmFybzogIDxodHRwOi8vd3d3LmZhY2Vib29rLmNvbS9wYWdlcy9M aW5hcm8+IEZhY2Vib29rIHwKPGh0dHA6Ly90d2l0dGVyLmNvbS8jIS9saW5hcm9vcmc+IFR3aXR0 ZXIgfAo8aHR0cDovL3d3dy5saW5hcm8ub3JnL2xpbmFyby1ibG9nLz4gQmxvZwoKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwg bWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK