From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id DCF066E135 for ; Wed, 27 Feb 2019 21:13:06 +0000 (UTC) MIME-Version: 1.0 From: Chris Wilson In-Reply-To: <20190227204612.GZ20097@intel.com> References: <20190227102019.31946-1-chris@chris-wilson.co.uk> <20190227204612.GZ20097@intel.com> Message-ID: <155130197702.5847.2045650652160649984@skylake-alporthouse-com> Date: Wed, 27 Feb 2019 21:13:02 +0000 Subject: Re: [igt-dev] [PATCH i-g-t] igt/drm_read: Exercise waking up the next waiter List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= Cc: igt-dev@lists.freedesktop.org List-ID: UXVvdGluZyBWaWxsZSBTeXJqw6Rsw6QgKDIwMTktMDItMjcgMjA6NDY6MTIpCj4gT24gV2VkLCBG ZWIgMjcsIDIwMTkgYXQgMTA6MjA6MTlBTSArMDAwMCwgQ2hyaXMgV2lsc29uIHdyb3RlOgo+ID4g VHJ5IHRvIGhpdCBhIGJ1ZyBpbiB0aGUga2VybmVsIHdoZXJlYnkgYSBzaG9ydCByZWFkZXIgZG9l cyBub3Qgd2FrZXVwCj4gPiB0aGUgbmV4dCB3YWl0ZXIgKG9uIHRoZSBzYW1lIGZkKSBsZWFkaW5n IHRvIGZvcmV2ZXIgYmxvY2tpbmcuCj4gPiAKPiA+IFNpZ25lZC1vZmYtYnk6IENocmlzIFdpbHNv biA8Y2hyaXNAY2hyaXMtd2lsc29uLmNvLnVrPgo+ID4gQ2M6IERhbmllbCBWZXR0ZXIgPGRhbmll bC52ZXR0ZXJAZmZ3bGwuY2g+Cj4gPiAtLS0KPiA+ICB0ZXN0cy9kcm1fcmVhZC5jIHwgODggKysr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrCj4gPiAgMSBmaWxl IGNoYW5nZWQsIDg4IGluc2VydGlvbnMoKykKPiA+IAo+ID4gZGlmZiAtLWdpdCBhL3Rlc3RzL2Ry bV9yZWFkLmMgYi90ZXN0cy9kcm1fcmVhZC5jCj4gPiBpbmRleCAzMDlmMzg5ZjYuLjkyM2E5Zjc1 MCAxMDA2NDQKPiA+IC0tLSBhL3Rlc3RzL2RybV9yZWFkLmMKPiA+ICsrKyBiL3Rlc3RzL2RybV9y ZWFkLmMKPiA+IEBAIC00Myw2ICs0Myw3IEBACj4gPiAgI2luY2x1ZGUgPHN5cy9pb2N0bC5oPgo+ ID4gICNpbmNsdWRlIDxzeXMvdGltZS5oPgo+ID4gICNpbmNsdWRlIDxzeXMvcG9sbC5oPgo+ID4g KyNpbmNsdWRlIDxwdGhyZWFkLmg+Cj4gPiAgI2luY2x1ZGUgImRybS5oIgo+ID4gIAo+ID4gIElH VF9URVNUX0RFU0NSSVBUSU9OKCJDYWxsIHJlYWQoZHJtKSBhbmQgc2VlIGlmIGl0IGJlaGF2ZXMu Iik7Cj4gPiBAQCAtMTY2LDYgKzE2Nyw5MCBAQCBzdGF0aWMgdm9pZCB0ZXN0X3Nob3J0X2J1ZmZl cihpbnQgaW4sIGludCBub25ibG9jaywgZW51bSBwaXBlIHBpcGUpCj4gPiAgICAgICB0ZWFyZG93 bihmZCk7Cj4gPiAgfQo+ID4gIAo+ID4gK3N0cnVjdCBzaG9ydF9idWZmZXJfd2FrZXVwIHsKPiA+ ICsgICAgIHB0aHJlYWRfbXV0ZXhfdCBtdXRleDsKPiA+ICsgICAgIHB0aHJlYWRfY29uZF90IHNl bmQsIHJlY3Y7Cj4gPiArICAgICBpbnQgY291bnRlcjsKPiA+ICsgICAgIGludCBkb25lOwo+ID4g KyAgICAgaW50IGZkOwo+ID4gK307Cj4gPiArCj4gPiArc3RhdGljIHZvaWQgKnRocmVhZF9zaG9y dF9idWZmZXJfd2FrZXVwKHZvaWQgKmFyZykKPiA+ICt7Cj4gPiArICAgICBzdHJ1Y3Qgc2hvcnRf YnVmZmVyX3dha2V1cCAqdyA9IGFyZzsKPiA+ICsgICAgIGNoYXIgYnVmZmVyWzEwMjRdOyAvKiBl dmVudHMgYXJlIHR5cGljYWxseSAzMiBieXRlcyAqLwo+ID4gKwo+ID4gKyAgICAgd2hpbGUgKCF3 LT5kb25lKSB7Cj4gPiArICAgICAgICAgICAgIC8qIFNob3J0IHJlYWQsIGRvZXMgbm90IGNvbnN1 bWUgdGhlIGV2ZW50LiAqLwo+ID4gKyAgICAgICAgICAgICBpZ3RfYXNzZXJ0X2VxKHJlYWQody0+ ZmQsIGJ1ZmZlciwgNCksIDApOwo+ID4gKwo+ID4gKyAgICAgICAgICAgICBwdGhyZWFkX211dGV4 X2xvY2soJnctPm11dGV4KTsKPiA+ICsgICAgICAgICAgICAgaWYgKCEtLXctPmNvdW50ZXIpCj4g PiArICAgICAgICAgICAgICAgICAgICAgcHRocmVhZF9jb25kX3NpZ25hbCgmdy0+c2VuZCk7Cj4g PiArICAgICAgICAgICAgIHB0aHJlYWRfY29uZF93YWl0KCZ3LT5yZWN2LCAmdy0+bXV0ZXgpOwo+ ID4gKyAgICAgICAgICAgICBwdGhyZWFkX211dGV4X3VubG9jaygmdy0+bXV0ZXgpOwo+ID4gKyAg ICAgfQo+ID4gKwo+ID4gKyAgICAgcmV0dXJuIE5VTEw7Cj4gPiArfQo+ID4gKwo+ID4gK3N0YXRp YyB2b2lkIHRlc3Rfc2hvcnRfYnVmZmVyX3dha2V1cChpbnQgaW4sIGVudW0gcGlwZSBwaXBlKQo+ ID4gK3sKPiA+ICsgICAgIGNvbnN0IGludCBudCA9IHN5c2NvbmYoX1NDX05QUk9DRVNTT1JTX09O TE4pICsgMTsKPiAKPiBIbW0uIEkgZ3Vlc3Mgd2l0aCBsZXNzIHRocmVhZHMgdGhlcmUncyBhIGJl dHRlciBjaGFuY2UKPiB0aGV5J2QgYWxsIGVzY2FwZSB0aGUgd2FpdF9mb3JfZXZlbnQoKSBiZWZv cmUgdGhlIGxpc3QKPiBiZWNvbWVzIGVtcHR5IGFuZCBqdXN0IGFsbCBwaWxlIHVwIG9uIHRoZSBt dXRleC4gU28gSQo+IHdhcyB3b25kZXJpbmcgaWYgZXZlbiBtb3JlIHdvdWxkIGJlIGJldHRlci4g QnV0IHNpbmNlCj4gQ0kgYWxyZWFkeSBmb3VuZCB0aGUgcHJvYmxlbSB3aXRoIHRoaXMgSSBndWVz cyBpdCdzCj4gc3VmZmljaWVudC4KCkkgdGhpbmsgdGhlIGJpZ2dlc3QgY2hhbGxlbmdlIGlzIGFj dHVhbGx5IG1ha2luZyBzdXJlIHRoYXQgYXQgbGVhc3QgMgp0aHJlYWRzIGVudGVyIHRoZSByZWFk IGFuZCBoaXQgdGhlIHdhaXQgY29uZGl0aW9uLCBiZWZvcmUgdGhlIHBhcmVudApnZW5lcmF0ZXMg dGhlIGV2ZW50LiBJZiB3ZSBib3VuZCBldmVyeW9uZSB0byBhIHNpbmdsZSBDUFUsIG1hZGUgdGhl CmNoaWxkcmVuIFJUIGFuZCB0aGUgcGFyZW50IGxvdyBwcmlvcml0eSwgd2UgcHJvYmFibHkgY291 bGQgZG8gaXQgd2l0aApqdXN0IDIgY2hpbGQgdGhyZWFkcyBzdWNjZXNzZnVsbHkuCgpCdXQgc2lu Y2UgaXQgb25seSB0YWtlcyBhYm91dCAzIHBhc3NlcyAobGVzcyB0aGFuIDAuMXMpIGZvciB0aGlz IHRvCnRyaWdnZXIgYWNyb3NzIHRoZSBtYWNoaW5lcywgSSB0aGluayB0aGF0J3MsIGFzIHlvdSBz YXksIGdvb2QgZW5vdWdoLgotQ2hyaXMKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KaWd0LWRldiBtYWlsaW5nIGxpc3QKaWd0LWRldkBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9p Z3QtZGV2