From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [RFC 0/7+1] Add in-kernel vblank delaying mechanism Date: Wed, 26 Nov 2014 18:19:57 +0100 Message-ID: <20141126171957.GN32117@phenom.ffwll.local> References: <1416426435-2237-1-git-send-email-przanoni@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wi0-f173.google.com (mail-wi0-f173.google.com [209.85.212.173]) by gabe.freedesktop.org (Postfix) with ESMTP id 296676E10C for ; Wed, 26 Nov 2014 09:19:32 -0800 (PST) Received: by mail-wi0-f173.google.com with SMTP id r20so13229446wiv.12 for ; Wed, 26 Nov 2014 09:19:31 -0800 (PST) Content-Disposition: inline In-Reply-To: <1416426435-2237-1-git-send-email-przanoni@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Paulo Zanoni Cc: intel-gfx@lists.freedesktop.org, Paulo Zanoni , dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gV2VkLCBOb3YgMTksIDIwMTQgYXQgMDU6NDc6MDdQTSAtMDIwMCwgUGF1bG8gWmFub25pIHdy b3RlOgo+IEZyb206IFBhdWxvIFphbm9uaSA8cGF1bG8uci56YW5vbmlAaW50ZWwuY29tPgo+IAo+ IEhpCj4gCj4gLS0tCj4gVEw7RFIgc3VtbWFyeToKPiBJIHdyb3RlIHBhdGNoZXMuIEhlbHAgbWUg Y2hvb3NlIHRoZSBiZXN0IGltcGxlbWVudGF0aW9uIGFuZCBpbnRlcmZhY2UuCj4gLS0tCj4gCj4g U28gdGhlIGk5MTUua28gZHJpdmVyIGNvdWxkIHVzZSBzb21lIG1lY2hhbmlzbSB0byBydW4gZnVu Y3Rpb25zIGFmdGVyIGEgZ2l2ZW4KPiBudW1iZXIgb2YgdmJsYW5rcy4gSW1wbGVtZW50YXRpb25z IGZvciB0aGlzIG1lY2hhbmlzbSB3ZXJlIGFscmVhZHkgcHJvcG9zZWQgaW4KPiB0aGUgcGFzdCAo YnkgQ2hyaXMgV2lsc29uIGFuZCBvdGhlcnMpLCBidXQgdGhleSB3ZXJlIGk5MTUtc3BlY2lmaWMg aW5zdGVhZCBvZiBhCj4gZ2VuZXJpYyBkcm0ua28gaW1wbGVtZW50YXRpb24uIFdlIGV2ZW4gaGFk IHBhdGNoZXMgdGhhdCBtYWtlIHVzZSBvZiB0aGlzIG5ldwo+IG1lY2hhbmlzbS4KPiAKPiBTaW5j ZSB0aGlzIGlzIHZlcnkgc2ltaWxhciB0byB0aGUgdmJsYW5rIElPQ1RMIHdlIGN1cnJlbnRseSBo YXZlLCBidXQgd2l0aCB0aGUKPiBjYWxsZXIgYmVpbmcgYSBLZXJuZWwgbW9kdWxlIGluc3RlYWQg b2YgdXNlciBzcGFjZSwgSSBkZWNpZGVkIHRvIHdyaXRlIGFuCj4gaW1wbGVtZW50YXRpb24gdGhh dCB0cmllcyB0byByZXVzZSB0aGUgY3VycmVudCBJT0NUTCBpbmZyYXN0cnVjdHVyZS4KPiAKPiBJ biB0aGUgZmlyc3QgcGF0Y2ggd2UgYWRkIGFsbCB0aGUgbmVjZXNzYXJ5IGNvZGUgdG8gYWxsb3cg dGhlIG1vZHVsZXMgdG8gY2FsbAo+IHRoZSB2YmxhbmsgaW9jdGwgZnJvbSBLZXJuZWwgc3BhY2U6 IHRoZXkgcHJvdmlkZSBhIGNhbGxiYWNrIGZ1bmN0aW9uIHRoYXQgaXMKPiBnb2luZyB0byBiZSBj YWxsZWQgaW5zdGVhZCBvZiB0aGUgdHJhZGl0aW9uYWwgc2VuZF92YmxhbmtfZXZlbnQoKSwgd2hp Y2ggbWVhbnMKPiB0aGUgS2VybmVsIGNhbGxlcnMgZG9uJ3QgaGF2ZSB0byBkZWFsIHdpdGggdGhl IGZpbGUgZGVzY3JpcHRvcnMgYW5kIERSTSBldmVudHMuCj4gCj4gSW4gdGhlIHNlY29uZCBwYXRj aCB3ZSBhZGQgYSBzaW1wbGUgZXh0ZW5zaW9uIG9mIHRoZSBmZWF0dXJlLCB0byBhbGxvdyB0aGUK PiBkcml2ZXJzIHRvIGhhdmUgdGhlaXIgY2FsbGJhY2tzIGNhbGxlZCBpbiBhIG5vbi1hdG9taWMg Y29udGV4dC4KPiAKPiBJbiBhbGwgdGhlIG90aGVyIHN1YnNlcXVlbnQgcGF0Y2hlcyB3ZSByZXdv cmsgdGhlIHVuZGVybHlpbmcgY29kZSBzbyB0aGF0Cj4gdGhlIGNvbW1vbiBhc3BlY3RzIGJldHdl ZW4gdGhlIHVzZXIgc3BhY2UgdmJsYW5rIElPQ1RMIGFuZCB0aGUgS2VybmVsIGludGVyZmFjZQo+ IGFyZSBhbGwgc3RvcmVkIGluIGEgc2luZ2xlIHN0cnVjdHVyZSAoc3RydWN0IGRybV92Ymxhbmtf d2FpdF9pdGVtKSwgYW5kIHRoZW4KPiBhbnl0aGluZyB0aGF0IGlzIHNwZWNpZmljIHRvIHRoZSBk aWZmZXJlbnQgdXNlcnMgaXMgc3RvcmVkIGluIGEgc3RydWN0dXJlIHRoYXQKPiBjb250YWlucyBz dHJ1Y3QgZHJtX3ZibGFua193YWl0X2l0ZW0uIFRoaXMgd2F5LCBtb3N0IG9mIHRoZSBkcm0ua28g Y29kZSBvbmx5Cj4gbmVlZHMgdG8gZGVhbCB3aXRoIHN0cnVjdCBkcm1fdmJsYW5rX3dhaXRfaXRl bSwgbm90IHJlYWxseSBrbm93aW5nIGhvdyBpdCBpcwo+IHdyYXBwZWQuIFRoZSBhZHZhbnRhZ2Ug b2YgdGhpcyByZXdvcmsgaXMgdGhhdCBpdCByZWR1Y2VzIHRoZSBudW1iZXIgb2YgbWVtb3J5Cj4g YWxsb2NhdGlvbnMgbmVlZGVkIGluIHNvbWUgY2FzZXMgKGZyb20gMiB0byAxKSBhbmQgaXQgYWxz byByZWR1Y2VzIHRoZSBhbW91bnQgb2YKPiBtZW1vcnkgdXNlZCBvbiBlYWNoIGFsbG9jYXRpb24u Cj4gCj4gQnV0IHdoaWxlIHRoaXMgYWxsIHNvdW5kcyBuaWNlIGluIHRoZSBhYm92ZSBkZXNjcmlw dGlvbiwgSSBoYWQgdGhlIGZlZWxpbmcgdGhhdAo+IHRoaXMgYWRkcyBhIGxvdCBvZiBjb21wbGV4 aXR5IGFuZCBtYWtlcyB0aGUgY29kZSBub3Qtc28tYmVhdXRpZnVsLiBJZiB3ZSBldmVyCj4gbmVl ZCBtb3JlIGV4dGVuc2lvbnMvb3B0aW9ucyB0byB0aGlzIGZlYXR1cmUsIHdlJ3JlIGdvaW5nIHRv IGhhdmUgdG8gdW50YW5nbGUKPiB0aGUgY29kZSBldmVuIG1vcmUgZnJvbSB0aGUgSU9DVEwgcGFy dC4gV2UgYWxzbyBoYXZlIGEgc21hbGwgImFic3RyYWN0aW9uIGJyZWFrIgo+IGluIGNoYW5nZSBp bnRyb2R1Y2VkIGluIHBhdGNoIDYuIEFuZCB0aGVyZSdzIHRoZSByaXNrIHRoYXQgc29tZSBvZiB0 aGUgcmV3b3Jrcwo+IG1heSBoYXZlIGFkZGVkIGEgcmVncmVzc2lvbiBzb21ld2hlcmUuCj4gCj4g QmFzZWQgb24gdGhhdCwgSSBkZWNpZGVkIHRvIGFsc28gcHJvdmlkZSBhbiBhbHRlcm5hdGl2ZSBp bXBsZW1lbnRhdGlvbi4gSW4gdGhpcwo+IGltcGxlbWVudGF0aW9uIHdlIGFkZCBhIG5ldyBkZXYt PnZibGFua19rZXJuZWxfbGlzdCBpbnN0ZWFkIG9mIHJldXNpbmcKPiBkZXYtPnZibGFua19ldmVu dF9saXN0LCBhbmQgYWRkIG5ldyBjb2RlIHRvIGhhbmRsZSB0aGF0IHRoaXMuIFRoaXMgbmV3IGNv ZGUgaXMKPiBjb21wbGV0ZWx5IGJhc2VkIG9uIHRoZSBjb2RlIHRoYXQgaGFuZGxlcyBkZXYtPnZi bGFua19rZXJuZWxfbGlzdCwgc28gdGhlcmUncwo+IHNvbWUgZHVwbGljYXRpb24gaGVyZS4gT24g dGhlIG90aGVyIGhhbmQsIHNpbmNlIHRoZSBpbi1LZXJuZWwgaW5mcmFzdHJ1Y3R1cmUgaXMKPiBu b3QgdGllZCB0byB0aGUgSU9DVEwgc3RydWN0dXJlLCB3ZSBjYW4gdmVyeSBlYXNpbHkgZ3JvdyBh bmQgYWRhcHQgdGhlIEtlcm5lbAo+IGNvZGUgd2l0aG91dCBoYXZpbmcgdG8gZmlnaHQgYWdhaW5z dCB0aGUgSU9DVEwgY29kZS4gQW5kIHRoZSByaXNrIG9mIHJlZ3Jlc3Npb25zCj4gaXMgZ3JlYXRs eSByZWR1Y2VkLgo+IAo+IFRoZSBzZWNvbmQgZGlmZmVyZW5jZSBvZiB0aGlzIGFsdGVybmF0aXZl IGltcGxlbWVudGF0aW9uIGlzIHRoZSBzaWduYXR1cmUgb2YgdGhlCj4gZHJtX3dhaXRfdmJsYW5r X2tlcm5lbCgpIGZ1bmN0aW9uLiBXaGlsZSBpdCBjb3VsZCBiZSBleGFjdGx5IHRoZSBzYW1lIGFz IHRoZSBvbmUKPiB1c2VkIGluIHRoZSBvdGhlciBzZXJpZXMsIEkgZGVjaWRlZCB0byBtYWtlIGl0 IGRpZmZlcmVudCBzbyB3ZSBjYW4gYWxzbyBjaG9vc2UKPiB3aGljaCBvbmUgdG8gdXNlLiBJbiB0 aGUgNy1wYXRjaCBzZXJpZXMgaW1wbGVtZW50YXRpb24sIGFsbCB0aGUgdXNlciBuZWVkcyB0byBk bwo+IGlzIHRvIGFsbG9jYXRlIHRoZSBzdHJ1Y3R1cmUsIGFuZCBjYWxsIHRoZSBmdW5jdGlvbiwg cHJvcGVybHkgc2V0dGluZyBhbGwgaXRzCj4gYXJndW1lbnRzLiBUaGVuIHRoZSBmdW5jdGlvbiBp cyByZXNwb25zaWJsZSBmb3IgcGFyc2luZyB0aGUgYXJndW1lbnRzIGFuZAo+IHBvcHVsYXRpbmcg dGhlIHN0cnVjdHVyZSBiYXNlZCBvbiB0aGF0LiBPbiB0aGUgYWx0ZXJuYXRpdmUgaW1wbGVtZW50 YXRpb24sIHRoZQo+IHVzZXIgaGFzIHRvIGZpbGwgdGhlIHN0cnVjdHVyZSB3aXRoIHRoZSBhcHBy b3ByaWF0ZSBhcmd1bWVudHMsIGFuZCB0aGVuIGNhbGwKPiBkcm1fd2FpdF92Ymxhbmtfa2VybmVs KCkgcGFzc2luZyBqdXN0IHRoZSBhbGxvY2F0ZWQgc3RydWN0dXJlIGFzIGFuIGFyZ3VtZW50Lgo+ IAo+IElmIHlvdSBub3RpY2UsIHlvdSB3aWxsIHNlZSB0aGF0IHRoZXNlIHBhdGNoZXMgYWRkIGEg bmV3IGRlYnVnZnMgZmlsZSB0bwo+IGk5MTUua28uIFRoaXMgZmlsZSBpcyBqdXN0IGEgdmVyeSBz aW1wbGUgZXhhbXBsZSB1c2VyIG9mIHRoZSBuZXcgaW50ZXJmYWNlLAo+IHdoaWNoIEkgdXNlZCB3 aGlsZSBkZXZlbG9waW5nLiBJZiB5b3UgaGF2ZSBkaWZmaWN1bHR5IHVuZGVyc3RhbmRpbmcgdGhl IG5ldwo+IGludGVyZmFjZSwgcGxlYXNlIGFsc28gbG9vayBhdCB0aGUgaTkxNS9pOTE1X2RlYnVn ZnMuYyBkaWZmLiBPZiBjb3Vyc2UsIEkgcGxhbgo+IHRvIGV4Y2x1ZGUgdGhpcyBkZWJ1Z2ZzIGlu dGVyZmFjZSBmcm9tIHRoZSBmaW5hbCB0by1iZS1tZXJnZWQgcGF0Y2hlcy4KPiAKPiBTbywgaW4g c3VtbWFyeSwgd2UgaGF2ZSBhIGZldyB0aGluZ3Mgd2UgbmVlZCB0byBkaXNjdXNzOgo+IAo+ICAx LiBXaGljaCBpbXBsZW1lbnRhdGlvbiB0byB1c2U/Cj4gCj4gICAgYS4gSnVzdCB0aGUgMiBmaXJz dCBwYXRjaGVzIG9mIHRoZSA3LXBhdGNoIHNlcmllcz8KPiAgICAgICBQcm9zOgo+ICAgICAgICAg LSB0aGUgS2VybmVsIHVzZXJzIGJhc2ljYWxseSBjYWxsIHRoZSB2YmxhbmsgSU9DVEwKPiAgICAg ICAgIC0gdGhlIGNvZGUgY2hhbmdlcyBhcmUgbWluaW1hbAo+ICAgICAgQ29uczoKPiAgICAgICAg IC0gVGhlIGFtb3VudCBvZiBtZW1vcnkgYWxsb2NhdGlvbnMgYW5kIG1lbW9yeSBzcGFjZSBjb25z dW1lZCBpcyBub3QKPiAgICAgICAgICAgb3B0aW1hbAo+IAo+ICAgIGIuIFRoZSBmdWxsIDctcGF0 Y2ggc2VyaWVzPwo+ICAgICAgIFByb3M6Cj4gICAgICAgICAtIFRoZSBzYW1lIGJhY2tlbmQgaXMg dXNlZCBmb3IgYm90aCB0aGUgS2VybmVsIGFuZCBJT0NUTC4KPiAgICAgICBDb25zOgo+ICAgICAg ICAgLSBUaGUgY29kZSBnZXRzIG1vcmUgY29tcGxleC4KPiAgICAgICAgIC0gRXh0ZW5kaW5nIHRo ZSBLZXJuZWwgaW50ZXJmYWNlIGNhbiBnZXQgY29tcGxpY2F0ZWQgZHVlIHRvIHRoZSBmYWN0Cj4g ICAgICAgICAgIHRoYXQgaXQgc2hhcmVzIGNvZGUgd2l0aCB0aGUgSU9DVEwgaW50ZXJmYWNlLgo+ ICAgICAgICAgLSBJIGRpZG4ndCByZWFsbHkgbGlrZSB0aGlzIHNvbHV0aW9uLgo+IAo+ICAgIGMu IFRoZSBhbHRlcm5hdGl2ZSBpbXBsZW1lbnRhdGlvbiBJIHdyb3RlPwo+ICAgICAgIFByb3M6Cj4g ICAgICAgICAtIEl0J3MgaW5kZXBlbmRlbnQgZnJvbSB0aGUgSU9DVEwgY29kZSwgbWFraW5nIGZ1 cnRoZXIgcGF0Y2hlcyBlYXNpZXIuCj4gICAgICAgQ29uczoKPiAgICAgICAgIC0gVGhlcmUgaXMg c29tZSBkdXBsaWNhdGVkIGNvZGUuCj4gCj4gICAgZC4gU29tZXRoaW5nIHRvdGFsbHkgZGlmZmVy ZW50IGZyb20gdGhlc2UgYWx0ZXJuYXRpdmVzPwo+IAo+ICAyLiBIb3cgc2hvdWxkIHRoZSBkcml2 ZXIgaW50ZXJmYWNlIGxvb2sgbGlrZT8KPiAKPiAgICBhLiBBbGwgdGhlIHBvc3NpYmlsaXRpZXMg YXJlIHBhc3NlZCB0aHJvdWdoIHRoZSBmdW5jdGlvbiBjYWxsLCBzbyB0aGUgZHJtLmtvCj4gICAg ICAgY29kZSBuZWVkcyB0byBzZXQgdGhlIHN0cnVjdCBtZW1iZXJzIGl0c2VsZi4KPiAgICBiLiBU aGUgY2FsbGVyIGFscmVhZHkgc2V0cyB0aGUgc3RydWN0IG1lbWJlcnMgaW5zdGVhZCBvZiBwYXNz aW5nIHRoZW0gYXMKPiAgICAgICBwYXJhbWV0ZXJzIHRvIHRoZSBmdW5jdGlvbi4KPiAgICBjLiBT b21ldGhpbmcgZGlmZmVyZW50Pwo+IAo+IEFsbCB0aGVzZSBwYXRjaGVzIGFyZSBiYXNlZCBvbiB0 b3Agb2YgRGFuaWVsIFZldHRlcidzIGRybS1pbnRlbC1uaWdodGx5IHRyZWUuCj4gSXQncyBhbGwg anVzdCBhbiBSRkMsIHNvIGRvbid0IGV4cGVjdCBzb21ldGhpbmcgdmVyeSB3ZWxsIHRlc3RlZC4K PiAKPiBGbGFtZXdhcnMgYW5kIGJpa2VzaGVkZGluZyBhcmUgd2VsY29tZSEKCkFzIHdlJ3ZlIGRp c2N1c3NlZCBvbiBpcmMgYSBiaXQgSSBzdGlsbCB0aGluayBjbGVhbmluZyB1cCB0aGlzIHJhdGhv bGUgaXMKYmVuZWZpY2lhbC4gR2V0dGluZyB0aGUgZXZlbnQgaGFuZGxpbmcgYW5kIHZibGFuayBj YWxsYmFja3MgcmlnaHQganVzdCBpbgpkcml2ZXJzIHNlZW1zIHRvIGJlIHJlYWxseSBoYXJkLCBz byBiZXR0ZXIgdG8gY2xlYW4gdGhpcyB1cCBhbmQgdW5pZnkKdGhpbmdzLgoKQnV0IGxpa2UgeW91 J3ZlIHNhaWQgcGF0Y2hlcyBhcmUgYSBsb3Qgb2YgY2h1cm4sIHNvIGRvIHlvdSBoYXZlIGEgZ2l0 CmJyYW5jaCBzb21ld2hlcmUgZm9yIHRoZSBsYXp5IHRvIGxvb2sgYXQ/CgpUaGFua3MsIERhbmll bAoKPiAKPiBUaGFua3MsCj4gUGF1bG8KPiAKPiBQYXVsbyBaYW5vbmkgKDcpOgo+IAo+ICAgLSBG aXJzdCBpbXBsZW1lbnRhdGlvbjoKPiAgIGRybTogYWxsb3cgdGhlIGRyaXZlcnMgdG8gY2FsbCB0 aGUgdmJsYW5rIElPQ1RMIGludGVybmFsbHkKPiAgIGRybTogYWxsb3cgZHJtX3dhaXRfdmJsYW5r X2tlcm5lbCgpIGNhbGxiYWNrIGZyb20gd29ya3F1ZXVlcwo+ICAgZHJtOiBpbnRyb2R1Y2Ugc3Ry dWN0IGRybV92Ymxhbmtfd2FpdF9pdGVtCj4gICBkcm06IGFkZCB3YW50ZWRfc2VxIHRvIGRybV92 Ymxhbmtfd2FpdF9pdGVtCj4gICBkcm06IGNoYW5nZSB0aGUgZHJtIHZibGFuayBjYWxsYmFjayBp dGVtIHR5cGUKPiAgIGRybTogbWFrZSB2YmxhbmtfZXZlbnRfbGlzdCBoYW5kbGUgZHJtX3ZibGFu a193YWl0X2l0ZW0gdHlwZXMKPiAgIGRybTogbWFrZSB0aGUgY2FsbGVycyBvZiBkcm1fd2FpdF92 YmxhbmsoKSBhbGxvY2F0ZSB0aGUgbWVtb3J5Cj4gCj4gICAtIEFsdGVybmF0aXZlIGltcGxlbWVu dGF0aW9uOgo+ICAgZHJtOiBhZGQgYSBtZWNoYW5pc20gZm9yIGRyaXZlcnMgdG8gc2NoZWR1bGUg dmJsYW5rIGNhbGxiYWNrcwo+IAo+IFN0YXRzIGZvciBvbmx5IHRoZSBmaXJzdCBpbXBsZW1lbnRh dGlvbjoKPiAKPiAgZHJpdmVycy9ncHUvZHJtL2RybV9mb3BzLmMgICAgICAgICAgfCAgMTUgKyst Cj4gIGRyaXZlcnMvZ3B1L2RybS9kcm1faW9jdGwuYyAgICAgICAgIHwgICAyICstCj4gIGRyaXZl cnMvZ3B1L2RybS9kcm1faXJxLmMgICAgICAgICAgIHwgMTc4ICsrKysrKysrKysrKysrKysrKysr KysrKysrLS0tLS0tLS0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2RlYnVnZnMuYyB8 ICA5MCArKysrKysrKysrKysrKysrKysKPiAgaW5jbHVkZS9kcm0vZHJtUC5oICAgICAgICAgICAg ICAgICAgfCAgMzUgKysrKysrLQo+ICA1IGZpbGVzIGNoYW5nZWQsIDI2NCBpbnNlcnRpb25zKCsp LCA1NiBkZWxldGlvbnMoLSkKPiAKPiAtLSAKPiAyLjEuMQo+IAo+IF9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gZHJpLWRldmVsIG1haWxpbmcgbGlzdAo+ IGRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKPiBodHRwOi8vbGlzdHMuZnJlZWRlc2t0 b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCgotLSAKRGFuaWVsIFZldHRlcgpTb2Z0 d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRpb24KKzQxICgwKSA3OSAzNjUgNTcgNDggLSBo dHRwOi8vYmxvZy5mZndsbC5jaApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lu dGVsLWdmeAo=