From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH 17/49] drm/i915: Implement inter-engine read-read optimisations Date: Mon, 30 Mar 2015 15:45:04 +0100 Message-ID: <55196170.4070806@linux.intel.com> References: <1427454141-4000-1-git-send-email-chris@chris-wilson.co.uk> <1427454141-4000-18-git-send-email-chris@chris-wilson.co.uk> <5519551A.8040204@linux.intel.com> <20150330140915.GA24305@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 454AC6E310 for ; Mon, 30 Mar 2015 07:45:18 -0700 (PDT) In-Reply-To: <20150330140915.GA24305@nuc-i3427.alporthouse.com> 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, Lionel Landwerlin List-Id: intel-gfx@lists.freedesktop.org Ck9uIDAzLzMwLzIwMTUgMDM6MDkgUE0sIENocmlzIFdpbHNvbiB3cm90ZToKPiBPbiBNb24sIE1h ciAzMCwgMjAxNSBhdCAwMjo1MjoyNlBNICswMTAwLCBUdnJ0a28gVXJzdWxpbiB3cm90ZToKPj4+ ICtzdGF0aWMgdm9pZAo+Pj4gK19faTkxNV9nZW1fcmVxdWVzdF9yZXRpcmVfX3VwdG8oc3RydWN0 IGRybV9pOTE1X2dlbV9yZXF1ZXN0ICpycSkKPj4KPj4gSXQgaXMgYSBiaXQgYW5ub3lpbmcgKGZv ciByZWFkYWJpbGl0eSkgdGhhdCBpdCBjYW4gYmUgcnEsIHJlcSBhbmQgcmVxdWVzdC4KPgo+IE5v bnNlbnNlIHRoZXkgYXJlIGFsbCBycSBhbmQgc3RydWN0IGk5MTVfcmVxdWVzdC4gT3Igb25jZSBo YXZlIGJlZW4gYW5kCj4gc28gd2lsbCBhZ2Fpbi4gL3Byb3BoZWN5CgpycSBpcyBsZWFzdCBzcHJl YWQgaW4gdGhlIGNvZGViYXNlLCBhbmQgZXZlbiB0aGUgd29yc3Qgb3B0aW9uIG9mIHRoZSAKdGhy ZWUgc2luY2UgaXQgc291bmRzIGxpa2UgYSBxdWV1ZSBvZiBzb21lIHNvcnQuCgo+Pj4gK2VycjoK Pj4+ICsJZm9yIChpID0gMDsgaSA8IG47IGkrKykgewo+Pj4gKwkJaWYgKHJldCA9PSAwKSB7Cj4+ PiArCQkJaW50IHJpbmcgPSByZXF1ZXN0c1tpXS0+cmluZy0+aWQ7Cj4+PiArCQkJaWYgKG9iai0+ bGFzdF9yZWFkX3JlcVtyaW5nXSA9PSByZXF1ZXN0c1tpXSkKPj4+ICsJCQkJaTkxNV9nZW1fb2Jq ZWN0X3JldGlyZV9fcmVhZChvYmosIHJpbmcpOwo+Pj4gKwkJCWlmIChvYmotPmxhc3Rfd3JpdGVf cmVxID09IHJlcXVlc3RzW2ldKQo+Pj4gKwkJCQlpOTE1X2dlbV9vYmplY3RfcmV0aXJlX193cml0 ZShvYmopOwo+Pgo+PiBBYm92ZSBmb3VyIGxpbmVzIHNlZW0gdG8gYmUgaWRlbnRpY2FsIGZ1bmN0 aW9uYWxpdHkgdG8gc2ltaWxhciBmb3VyCj4+IGluIF9faTkxNV9nZW1fb2JqZWN0X3N5bmMuCj4K PiBZZXMuIEV4dHJhY3RpbmcgdGhlbSBlbmRlZCB1cCBsb29raW5nIHdvcnNlIChpbW8pLgoKSXQg d291bGQgYmUgYSBzaW5nbGUgZnVuY3Rpb24gY2FsbCB0YWtpbmcgb2JqZWN0IGFuZCByZXF1ZXN0 LCBob3cgY2FuIGl0IApiZSB3b3JzZT8gU2hvdWxkIGJlIG1vcmUgcmVhZGFibGUgd2l0aCBhIGdv b2QgbmFtZS4KCj4+IEFsc28sIF9yZXRpcmVfX3JlYWQgd2lsbCBkbyBfcmV0aXJlX193cml0ZSBp ZiB0aGVyZSBpcyBvbmUgb24gdGhlCj4+IHNhbWUgcmluZy4gQW5kIGhlcmUgYnkgZGVmaW5pdGlv biB0aGV5IGFyZSBzaW5jZSBpdCBpcyB0aGUgc2FtZQo+PiByZXF1ZXN0LCBubz8KPgo+IE5vLiBJ dCdzIHN1YnRsZSBidXQgaGVyZSBpcyB0aGUgYnVnIEkgcG9pbnRlZCBvdXQgZnJvbSBiZWZvcmUu IE9uY2Ugd2UKPiBkcm9wIHRoZSBsb2NrLCB3ZSBubyBsb25nZXIgY2FuIG1ha2UgYXNzdW1wdGlv bnMgYWJvdXQgdGhlIHN0YXRlIG9mIG9iai4KCllvdSBtZWFuIHJlcXVlc3QgbWlnaHQgaGF2ZSBk aXNhcHBlYXJlZCBmcm9tIGxhc3RfcmVhZF9yZXEgYnV0IGlzIHN0aWxsIApvbiBsYXN0X3dyaXRl X3JlcT8gQnV0IGhvdywgc2luY2UgaWYgaXQgd2FzIHJldGlyZWQgdGhhdCBzaG91bGRuJ3QgYmUg CnBvc3NpYmxlLgoKPj4+IEBAIC0yNjk4LDE2ICsyNzQ3LDEzIEBAIGk5MTVfZ2VtX3JldGlyZV9y ZXF1ZXN0c19yaW5nKHN0cnVjdCBpbnRlbF9lbmdpbmVfY3MgKnJpbmcpCj4+PiAgIAkJaWYgKCFp OTE1X2dlbV9yZXF1ZXN0X2NvbXBsZXRlZChyZXF1ZXN0LCB0cnVlKSkKPj4+ICAgCQkJYnJlYWs7 Cj4+Pgo+Pj4gLQkJdHJhY2VfaTkxNV9nZW1fcmVxdWVzdF9yZXRpcmUocmVxdWVzdCk7Cj4+PiAt Cj4+PiAgIAkJLyogV2Uga25vdyB0aGUgR1BVIG11c3QgaGF2ZSByZWFkIHRoZSByZXF1ZXN0IHRv IGhhdmUKPj4+ICAgCQkgKiBzZW50IHVzIHRoZSBzZXFubyArIGludGVycnVwdCwgc28gdXNlIHRo ZSBwb3NpdGlvbgo+Pj4gICAJCSAqIG9mIHRhaWwgb2YgdGhlIHJlcXVlc3QgdG8gdXBkYXRlIHRo ZSBsYXN0IGtub3duIHBvc2l0aW9uCj4+PiAgIAkJICogb2YgdGhlIEdQVSBoZWFkLgo+Pj4gICAJ CSAqLwo+Pj4gICAJCXJlcXVlc3QtPnJpbmdidWYtPmxhc3RfcmV0aXJlZF9oZWFkID0gcmVxdWVz dC0+cG9zdGZpeDsKPj4+IC0KPj4+IC0JCWk5MTVfZ2VtX2ZyZWVfcmVxdWVzdChyZXF1ZXN0KTsK Pj4+ICsJCWk5MTVfZ2VtX3JlcXVlc3RfcmV0aXJlKHJlcXVlc3QpOwo+Pj4gICAJfQo+Pgo+PiBU aGlzIGxvb3AgY291bGQgYWxzbyB1c2UgX19pOTE1X2dlbV9yZXF1ZXN0X3JldGlyZV9fdXB0byBp ZiBpdCBmb3VuZAo+PiB0aGUgZmlyc3QgY29tcGxldGVkIHJlcXVlc3QgZmlyc3QuIE5vdCBzdXJl IGhvdyBtdWNoIGNvZGUgd291bGQgdGhhdAo+PiBzYXZlIGJ1dCB3b3VsZCBtYXViZSBiZSBtb3Jl IHJlYWRhYmxlLCBhIGxpdHRsZSBiaXQgbW9yZSBzZWxmCj4+IGRvY3VtZW50aW5nLgo+Cj4gQWN0 dWFsbHkgdGhpcyBsb29wIGhlcmUgc2hvdWxkIGJlIHB1c2hlZCBiYWNrIHRvIHRoZSBlbmdpbmUg KGFzIHBhcnQgb2YKPiBsYXRlciBwYXRjaGVzKS4gQWZ0ZXIgdGhhdCB0cmFuc2Zvcm1hdGlvbiwg dXNpbmcgaTkxNV9nZW1fcmVxdWVzdF9yZXRpcmUoKQo+IGlzIGV2ZW4gY2xlYXJlci4gQnV0IF9y ZXRpcmVfX3VwdG8gZG9lcyBiZWNvbWUgdGhlIG1haW4gd2F5IGluIHdoaWNoIHdlCj4gcmV0aXJl IHJlcXVlc3RzIChoYXZpbmcga2lsbGVkIG9mZiByZXRpcmVfcmVxdWVzdHNfcmluZyBpbiBmYXZv dXIgb2YKPiBleHBsaWN0IHdhaXQvcG9sbCtyZXRpcmUpLgoKVGhhdCBzb3VuZHMgZ29vZC4KCj4+ IFNvIGZhciBpdCBhbGwgbG9va3MgcmVhc29uYWJsZSB0byBtZSwgYnV0IGFwYXJ0IGZyb20gdGhl IGNvbW1lbnRzCj4+IGFib3ZlLCBJIHdhbnQgdG8gZG8gYW5vdGhlciBwYXNzIGFueXdheS4KPgo+ IFRoZXJlJ3MgYSBmZXcgbW9yZSBjaGFuZ2VzIGFmb290IGFzIHdlbGwgKG1pbm9yIG9uZXMgY29u Y2VybmluZwo+IHJldGlyZV9fdXB0byBhbmQgdW5leHBvcnRpbmcgcmV0aXJlX3JlcXVlc3RzX3Jp ZykuCgpPay4KClJlZ2FyZHMsCgpUdnJ0a28KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMu ZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0 aW5mby9pbnRlbC1nZngK