From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH 14/15] drm/i915: Only query timestamp when measuring elapsed time Date: Mon, 30 Nov 2015 10:19:40 +0000 Message-ID: <565C22BC.1070306@linux.intel.com> References: <1448786893-2522-1-git-send-email-chris@chris-wilson.co.uk> <1448786893-2522-15-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id E67526E4E0 for ; Mon, 30 Nov 2015 02:19:42 -0800 (PST) In-Reply-To: <1448786893-2522-15-git-send-email-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 , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org Ck9uIDI5LzExLzE1IDA4OjQ4LCBDaHJpcyBXaWxzb24gd3JvdGU6Cj4gQXZvaWQgdGhlIHR3byBj YWxscyB0byBrdGltZV9nZXRfcmF3X25zKCkgKGF0IGJlc3QgaXQgcmVhZHMgdGhlIFRTQykgYXMK PiB3ZSBvbmx5IG5lZWQgdG8gY29tcHV0ZSB0aGUgZWxhcHNlZCB0aW1lIGZvciBhIHRpbWVkIHdh aXQuCj4KPiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5j by51az4KPiAtLS0KPiAgIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgfCAxMyArKysr Ky0tLS0tLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgNSBpbnNlcnRpb25zKCspLCA4IGRlbGV0aW9u cygtKQo+Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCj4gaW5kZXggMmMzZTM2ZTE5Y2IwLi44NzEy MDE3MTNjNzMgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+ ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKPiBAQCAtMTIyNyw3ICsxMjI3 LDYgQEAgaW50IF9faTkxNV93YWl0X3JlcXVlc3Qoc3RydWN0IGRybV9pOTE1X2dlbV9yZXF1ZXN0 ICpyZXEsCj4gICAJaW50IHN0YXRlID0gaW50ZXJydXB0aWJsZSA/IFRBU0tfSU5URVJSVVBUSUJM RSA6IFRBU0tfVU5JTlRFUlJVUFRJQkxFOwo+ICAgCURFRklORV9XQUlUKHdhaXQpOwo+ICAgCXVu c2lnbmVkIGxvbmcgdGltZW91dF9yZW1haW47Cj4gLQlzNjQgYmVmb3JlLCBub3c7Cj4gICAJaW50 IHJldDsKPgo+ICAgCWlmIChsaXN0X2VtcHR5KCZyZXEtPmxpc3QpKQo+IEBAIC0xMjQ0LDEzICsx MjQzLDEyIEBAIGludCBfX2k5MTVfd2FpdF9yZXF1ZXN0KHN0cnVjdCBkcm1faTkxNV9nZW1fcmVx dWVzdCAqcmVxLAo+ICAgCQlpZiAoKnRpbWVvdXQgPT0gMCkKPiAgIAkJCXJldHVybiAtRVRJTUU7 Cj4KPiArCQkvKiBSZWNvcmQgY3VycmVudCB0aW1lIGluIGNhc2UgaW50ZXJydXB0ZWQsIG9yIHdl ZGdlZCAqLwo+ICAgCQl0aW1lb3V0X3JlbWFpbiA9IG5zZWNzX3RvX2ppZmZpZXNfdGltZW91dCgq dGltZW91dCk7Cj4gKwkJKnRpbWVvdXQgKz0ga3RpbWVfZ2V0X3Jhd19ucygpOwoKRG9uJ3QgcmVh bGx5IGxpa2UgdGhpcyBvbmUsIGhvdyB5b3UgdXNlIHRoZSBwYXNzZWQgaW4gcG9pbnRlciB0byBz dG9yZSAKdGhlIGludGVybWVkaWF0ZSBsb2NhbCBzdGF0ZS4KCkl0IHdvcmtzIGV0YyBidXQganVz dCBmZWVscyB0b28gaGFja3kuCgpSZWdhcmRzLAoKVHZydGtvCgoKPiAgIAl9Cj4KPiAtCS8qIFJl Y29yZCBjdXJyZW50IHRpbWUgaW4gY2FzZSBpbnRlcnJ1cHRlZCBieSBzaWduYWwsIG9yIHdlZGdl ZCAqLwo+ICAgCXRyYWNlX2k5MTVfZ2VtX3JlcXVlc3Rfd2FpdF9iZWdpbihyZXEpOwo+IC0JYmVm b3JlID0ga3RpbWVfZ2V0X3Jhd19ucygpOwo+IC0KPiAgIAlpZiAoSU5URUxfSU5GTyhyZXEtPmk5 MTUpLT5nZW4gPj0gNikKPiAgIAkJZ2VuNl9ycHNfYm9vc3QocmVxLT5pOTE1LCBycHMsIHJlcS0+ ZW1pdHRlZF9qaWZmaWVzKTsKPgo+IEBAIC0xMjg2LDE0ICsxMjg0LDEzIEBAIGludCBfX2k5MTVf d2FpdF9yZXF1ZXN0KHN0cnVjdCBkcm1faTkxNV9nZW1fcmVxdWVzdCAqcmVxLAo+ICAgCX0KPiAg IAlmaW5pc2hfd2FpdCgmcmVxLT53YWl0LCAmd2FpdCk7Cj4gICBvdXQ6Cj4gLQlub3cgPSBrdGlt ZV9nZXRfcmF3X25zKCk7Cj4gICAJaW50ZWxfYnJlYWRjcnVtYnNfcmVtb3ZlX3dhaXRlcihyZXEp Owo+ICAgCXRyYWNlX2k5MTVfZ2VtX3JlcXVlc3Rfd2FpdF9lbmQocmVxKTsKPgo+ICAgCWlmICh0 aW1lb3V0KSB7Cj4gLQkJczY0IHRyZXMgPSAqdGltZW91dCAtIChub3cgLSBiZWZvcmUpOwo+IC0K PiAtCQkqdGltZW91dCA9IHRyZXMgPCAwID8gMCA6IHRyZXM7Cj4gKwkJKnRpbWVvdXQgLT0ga3Rp bWVfZ2V0X3Jhd19ucygpOwo+ICsJCWlmICgqdGltZW91dCA8IDApCj4gKwkJCSp0aW1lb3V0ID0g MDsKPgo+ICAgCQkvKgo+ICAgCQkgKiBBcHBhcmVudGx5IGt0aW1lIGlzbid0IGFjY3VyYXRlIGVu b3VnaCBhbmQgb2NjYXNpb25hbGx5IGhhcyBhCj4KX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9s aXN0aW5mby9pbnRlbC1nZngK