From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lionel Landwerlin Subject: Re: [PATCH] drm/i915/execlists: Drop preemption arbitrations points along the ring Date: Thu, 3 May 2018 21:10:04 +0100 Message-ID: References: <20180503195416.22498-1-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 mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1D8D089BAF for ; Thu, 3 May 2018 20:10:07 +0000 (UTC) In-Reply-To: <20180503195416.22498-1-chris@chris-wilson.co.uk> Content-Language: en-US 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 T24gMDMvMDUvMTggMjA6NTQsIENocmlzIFdpbHNvbiB3cm90ZToKPiBMaW1pdCB0aGUgYXJiaXRy YXRpb24gKHdoZXJlIHByZWVtcHRpb24gbWF5IG9jY3VyKSB0byBpbnNpZGUgdGhlIGJhdGNoLAo+ IGFuZCBwcmV2ZW50IGl0IGZyb20gaGFwcGVuaW5nIG9uIHRoZSBwaXBlY29udHJvbHMvZmx1c2hl cyB3ZSB1c2UgdG8KPiB3cml0ZSB0aGUgYnJlYWRjcnVtYiBzZXFuby4gT25jZSB0aGUgdXNlciBi YXRjaCBpcyBjb21wbGV0ZSwgd2UgaGF2ZQo+IG5vdGhpbmcgbGVmdCB0byBkbyBidXQgc2VyaWFs aXNlIGFuZCBlbWl0IHRoZSBicmVhZGNydW1iOyBzd2l0Y2hpbmcKPiBjb250ZXh0cyBhdCB0aGlz IHBvaW50IGlzIGZ1dGlsZSBzbyBkb24ndC4KPgo+IFNpZ25lZC1vZmYtYnk6IENocmlzIFdpbHNv biA8Y2hyaXNAY2hyaXMtd2lsc29uLmNvLnVrPgo+IENjOiBNaWNoYcWCIFdpbmlhcnNraSA8bWlj aGFsLndpbmlhcnNraUBpbnRlbC5jb20+Cj4gQ2M6IE1pY2hlbCBUaGllcnJ5IDxtaWNoZWwudGhp ZXJyeUBpbnRlbC5jb20+Cj4gQ2M6IEpvb25hcyBMYWh0aW5lbiA8am9vbmFzLmxhaHRpbmVuQGxp bnV4LmludGVsLmNvbT4KPiBSZXZpZXdlZC1ieTogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1 bGluQGludGVsLmNvbT4KUmV2aWV3ZWQtYnk6IExpb25lbCBMYW5kd2VybGluIDxsaW9uZWwuZy5s YW5kd2VybGluQGludGVsLmNvbT4KPiAtLS0KPgo+IE1pY2hhxYIgYW5kIE1pY2hlbCwKPiAgICBw bGVhc2UgdGFrZSBhIGxvb2sgYW5kIHNlZSBpZiB5b3UgY2FuIHRoaW5rIG9mIGFueSBvYmplY3Rp b25zLgo+IC1DaHJpcwo+Cj4gLS0tCj4gICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMu YyB8IDkgKysrKysrLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgNiBpbnNlcnRpb25zKCspLCAzIGRl bGV0aW9ucygtKQo+Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xy Yy5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMKPiBpbmRleCAzZDc0N2QxYzNk NGQuLjlmM2NjZTAyMmIyZCAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9scmMuYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4gQEAgLTE5 MzMsNyArMTkzMyw3IEBAIHN0YXRpYyBpbnQgZ2VuOF9lbWl0X2JiX3N0YXJ0KHN0cnVjdCBpOTE1 X3JlcXVlc3QgKnJxLAo+ICAgCQlycS0+Y3R4LT5wcGd0dC0+cGRfZGlydHlfcmluZ3MgJj0gfmlu dGVsX2VuZ2luZV9mbGFnKHJxLT5lbmdpbmUpOwo+ICAgCX0KPiAgIAo+IC0JY3MgPSBpbnRlbF9y aW5nX2JlZ2luKHJxLCA0KTsKPiArCWNzID0gaW50ZWxfcmluZ19iZWdpbihycSwgNik7Cj4gICAJ aWYgKElTX0VSUihjcykpCj4gICAJCXJldHVybiBQVFJfRVJSKGNzKTsKPiAgIAo+IEBAIC0xOTYy LDYgKzE5NjIsOSBAQCBzdGF0aWMgaW50IGdlbjhfZW1pdF9iYl9zdGFydChzdHJ1Y3QgaTkxNV9y ZXF1ZXN0ICpycSwKPiAgIAkJKGZsYWdzICYgSTkxNV9ESVNQQVRDSF9SUyA/IE1JX0JBVENIX1JF U09VUkNFX1NUUkVBTUVSIDogMCk7Cj4gICAJKmNzKysgPSBsb3dlcl8zMl9iaXRzKG9mZnNldCk7 Cj4gICAJKmNzKysgPSB1cHBlcl8zMl9iaXRzKG9mZnNldCk7Cj4gKwo+ICsJKmNzKysgPSBNSV9B UkJfT05fT0ZGIHwgTUlfQVJCX0RJU0FCTEU7Cj4gKwkqY3MrKyA9IE1JX05PT1A7Cj4gICAJaW50 ZWxfcmluZ19hZHZhbmNlKHJxLCBjcyk7Cj4gICAKPiAgIAlyZXR1cm4gMDsKPiBAQCAtMjEwNCw3 ICsyMTA3LDcgQEAgc3RhdGljIHZvaWQgZ2VuOF9lbWl0X2JyZWFkY3J1bWIoc3RydWN0IGk5MTVf cmVxdWVzdCAqcmVxdWVzdCwgdTMyICpjcykKPiAgIAljcyA9IGdlbjhfZW1pdF9nZ3R0X3dyaXRl KGNzLCByZXF1ZXN0LT5nbG9iYWxfc2Vxbm8sCj4gICAJCQkJICBpbnRlbF9od3Nfc2Vxbm9fYWRk cmVzcyhyZXF1ZXN0LT5lbmdpbmUpKTsKPiAgIAkqY3MrKyA9IE1JX1VTRVJfSU5URVJSVVBUOwo+ IC0JKmNzKysgPSBNSV9OT09QOwo+ICsJKmNzKysgPSBNSV9BUkJfT05fT0ZGIHwgTUlfQVJCX0VO QUJMRTsKPiAgIAlyZXF1ZXN0LT50YWlsID0gaW50ZWxfcmluZ19vZmZzZXQocmVxdWVzdCwgY3Mp Owo+ICAgCWFzc2VydF9yaW5nX3RhaWxfdmFsaWQocmVxdWVzdC0+cmluZywgcmVxdWVzdC0+dGFp bCk7Cj4gICAKPiBAQCAtMjEyMCw3ICsyMTIzLDcgQEAgc3RhdGljIHZvaWQgZ2VuOF9lbWl0X2Jy ZWFkY3J1bWJfcmNzKHN0cnVjdCBpOTE1X3JlcXVlc3QgKnJlcXVlc3QsIHUzMiAqY3MpCj4gICAJ Y3MgPSBnZW44X2VtaXRfZ2d0dF93cml0ZV9yY3MoY3MsIHJlcXVlc3QtPmdsb2JhbF9zZXFubywK PiAgIAkJCQkgICAgICBpbnRlbF9od3Nfc2Vxbm9fYWRkcmVzcyhyZXF1ZXN0LT5lbmdpbmUpKTsK PiAgIAkqY3MrKyA9IE1JX1VTRVJfSU5URVJSVVBUOwo+IC0JKmNzKysgPSBNSV9OT09QOwo+ICsJ KmNzKysgPSBNSV9BUkJfT05fT0ZGIHwgTUlfQVJCX0VOQUJMRTsKPiAgIAlyZXF1ZXN0LT50YWls ID0gaW50ZWxfcmluZ19vZmZzZXQocmVxdWVzdCwgY3MpOwo+ICAgCWFzc2VydF9yaW5nX3RhaWxf dmFsaWQocmVxdWVzdC0+cmluZywgcmVxdWVzdC0+dGFpbCk7Cj4gICAKCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK