From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH 3/3] drm: Peek at the current counter/timestamp for vblank queries Date: Wed, 15 Mar 2017 23:06:32 +0200 Message-ID: <20170315210632.GZ31595@intel.com> References: <20170315204027.20160-1-chris@chris-wilson.co.uk> <20170315204027.20160-3-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20170315204027.20160-3-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson Cc: Michel =?iso-8859-1?Q?D=E4nzer?= , dri-devel@lists.freedesktop.org, Laurent Pinchart , Dave Airlie , intel-gfx@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBNYXIgMTUsIDIwMTcgYXQgMDg6NDA6MjdQTSArMDAwMCwgQ2hyaXMgV2lsc29uIHdy b3RlOgo+IEJ5cGFzcyBhbGwgdGhlIHNwaW5sb2NrcyBhbmQgcmV0dXJuIHRoZSBsYXN0IHRpbWVz dGFtcCBhbmQgY291bnRlciBmcm9tCj4gdGhlIGxhc3QgdmJsYW5rIGlmIHRoZSBkcml2ZXIgZGVs Y2FyZXMgdGhhdCBpdCBpcyBhY2N1cmF0ZSAoYW5kIHN0YWJsZQo+IGFjcm9zcyBvbi9vZmYpLCBh bmQgdGhlIHZibGFuayBpcyBjdXJyZW50bHkgZW5hYmxlZC4KPiAKPiBUaGlzIGlzIGRlcGVuZGVu dCB1cG9uIHRoZSBib3RoIHRoZSBoYXJkd2FyZSBhbmQgZHJpdmVyIHRvIHByb3ZpZGUgdGhlCj4g cHJvcGVyIGJhcnJpZXJzIHRvIGZhY2lsaXRhdGUgcmVhZGluZyBvdXIgYm9va2tlZXBpbmcgb3V0 c2lkZSBvZiB0aGUKPiB2YmxhbmsgaW50ZXJydXB0IGFuZCBvdXRzaWRlIG9mIHRoZSBleHBsaWNp dCB2YmxhbmsgbG9ja3MuCj4gCj4gU2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxjaHJpc0Bj aHJpcy13aWxzb24uY28udWs+Cj4gQ2M6IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBs aW51eC5pbnRlbC5jb20+Cj4gQ2M6IERhbmllbCBWZXR0ZXIgPGRhbmllbEBmZndsbC5jaD4KPiBD YzogTWljaGVsIETDpG56ZXIgPG1pY2hlbEBkYWVuemVyLm5ldD4KPiBDYzogTGF1cmVudCBQaW5j aGFydCA8bGF1cmVudC5waW5jaGFydEBpZGVhc29uYm9hcmQuY29tPgo+IENjOiBEYXZlIEFpcmxp ZSA8YWlybGllZEByZWRoYXQuY29tPiwKPiBDYzogTWFyaW8gS2xlaW5lciA8bWFyaW8ua2xlaW5l ci5kZUBnbWFpbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2RybS9kcm1faXJxLmMgfCAyNiAr KysrKysrKysrKysrKysrKysrKysrKysrKwo+ICAxIGZpbGUgY2hhbmdlZCwgMjYgaW5zZXJ0aW9u cygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2lycS5jIGIvZHJpdmVy cy9ncHUvZHJtL2RybV9pcnEuYwo+IGluZGV4IDUzYTUyNmM3YjI0ZC4uYzU1YWJjZTE1MmEyIDEw MDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9kcm1faXJxLmMKPiArKysgYi9kcml2ZXJzL2dw dS9kcm0vZHJtX2lycS5jCj4gQEAgLTE1NTksNiArMTU1OSwxNyBAQCBzdGF0aWMgaW50IGRybV9x dWV1ZV92YmxhbmtfZXZlbnQoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdW5zaWduZWQgaW50IHBp cGUsCj4gIAlyZXR1cm4gcmV0Owo+ICB9Cj4gIAo+ICtzdGF0aWMgYm9vbCBkcm1fd2FpdF92Ymxh bmtfaXNfcXVlcnkodW5pb24gZHJtX3dhaXRfdmJsYW5rICp2Ymx3YWl0KQo+ICt7Cj4gKwlpZiAo dmJsd2FpdC0+cmVxdWVzdC5zZXF1ZW5jZSkKPiArCQlyZXR1cm4gZmFsc2U7Cj4gKwo+ICsJcmV0 dXJuIF9EUk1fVkJMQU5LX1JFTEFUSVZFID09Cj4gKwkJKHZibHdhaXQtPnJlcXVlc3QudHlwZSAm IChfRFJNX1ZCTEFOS19UWVBFU19NQVNLIHwKPiArCQkJCQkgIF9EUk1fVkJMQU5LX0VWRU5UIHwK PiArCQkJCQkgIF9EUk1fVkJMQU5LX05FWFRPTk1JU1MpKTsKPiArfQo+ICsKPiAgLyoKPiAgICog V2FpdCBmb3IgVkJMQU5LLgo+ICAgKgo+IEBAIC0xNjA4LDYgKzE2MTksMjEgQEAgaW50IGRybV93 YWl0X3ZibGFuayhzdHJ1Y3QgZHJtX2RldmljZSAqZGV2LCB2b2lkICpkYXRhLAo+ICAKPiAgCXZi bGFuayA9ICZkZXYtPnZibGFua1twaXBlXTsKPiAgCj4gKwkvKiBJZiB0aGUgY291bnRlciBpcyBj dXJyZW50bHkgZW5hYmxlZCBhbmQgYWNjdXJhdGUsIHNob3J0LWNpcmN1aXQgcXVlcmllcwo+ICsJ ICogdG8gcmV0dXJuIHRoZSBjYWNoZWQgdGltZXN0YW1wIG9mIHRoZSBsYXN0IHZibGFuay4KPiAr CSAqLwo+ICsJaWYgKGRldi0+dmJsYW5rX2Rpc2FibGVfaW1tZWRpYXRlICYmCj4gKwkgICAgZHJt X3dhaXRfdmJsYW5rX2lzX3F1ZXJ5KHZibHdhaXQpICYmCj4gKwkgICAgdmJsYW5rLT5lbmFibGVk KSB7CgpIbW0uIEknbSB3b25kZXJpbmcgaWYgdGhpcyBjb3VsZCBnaXZlIHVzIHNvbWV0aGluZyBz dGFsZSBpZiB3ZSdyZSBqdXN0CmFib3V0IHRvIGVuYWJsZSB0aGUgdmJsYW5rIGludGVycnVwdC4K CldlIHNlZW0gdG8gc2V0IGVuYWJsZWQ9dHJ1ZSBiZWZvcmUgd2UgdXBkYXRlIHRoZSBjb3VudC90 cy4gU28gSSdtIAp0aGlua2luZyB3ZSdkIG5lZWQgdG8gZmxpcCB0aG9zZSBhcm91bmQgYW5kIG1h a2Ugc3VyZSBwcm9wZXIgYmFycmllcnMKYXJlIGluIHBsYWNlLgoKPiArCQlzdHJ1Y3QgdGltZXZh bCBub3c7Cj4gKwo+ICsJCXZibHdhaXQtPnJlcGx5LnNlcXVlbmNlID0KPiArCQkJZHJtX3ZibGFu a19jb3VudF9hbmRfdGltZShkZXYsIHBpcGUsICZub3cpOwo+ICsJCXZibHdhaXQtPnJlcGx5LnR2 YWxfc2VjID0gbm93LnR2X3NlYzsKPiArCQl2Ymx3YWl0LT5yZXBseS50dmFsX3VzZWMgPSBub3cu dHZfdXNlYzsKPiArCQlyZXR1cm4gMDsKPiArCX0KPiArCj4gIAlyZXQgPSBkcm1fdmJsYW5rX2dl dChkZXYsIHBpcGUpOwo+ICAJaWYgKHJldCkgewo+ICAJCURSTV9ERUJVRygiY3J0YyAlZCBmYWls ZWQgdG8gYWNxdWlyZSB2YmxhbmsgY291bnRlciwgJWRcbiIsIHBpcGUsIHJldCk7Cj4gLS0gCj4g Mi4xMS4wCgotLSAKVmlsbGUgU3lyasOkbMOkCkludGVsIE9UQwpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVs LWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcv bWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK