From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH v2 1/3] drm/i915: Mark i915_request.timeline as a volatile, rcu pointer Date: Fri, 20 Sep 2019 09:47:26 +0100 Message-ID: <89b0252e-dc4a-9fd6-e007-58bcc7e30bd7@linux.intel.com> References: <20190919111912.21631-1-chris@chris-wilson.co.uk> <5202f44e-a251-f4e0-f27c-1f96fab24078@linux.intel.com> <156889956418.31102.4110265390892262636@skylake-alporthouse-com> <8b0b57de-6d4b-57f8-be31-7201d3f235ec@linux.intel.com> <156891536326.1196.6694433407311839234@skylake-alporthouse-com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7DC8B6FB80 for ; Fri, 20 Sep 2019 08:47:30 +0000 (UTC) In-Reply-To: <156891536326.1196.6694433407311839234@skylake-alporthouse-com> 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 Ck9uIDE5LzA5LzIwMTkgMTg6NDksIENocmlzIFdpbHNvbiB3cm90ZToKPiBRdW90aW5nIFR2cnRr byBVcnN1bGluICgyMDE5LTA5LTE5IDE4OjExOjE0KQo+Pgo+PiBPbiAxOS8wOS8yMDE5IDE0OjI2 LCBDaHJpcyBXaWxzb24gd3JvdGU6Cj4+PiBRdW90aW5nIFR2cnRrbyBVcnN1bGluICgyMDE5LTA5 LTE5IDE0OjAyOjE5KQo+Pj4+Cj4+Pj4gT24gMTkvMDkvMjAxOSAxMjoxOSwgQ2hyaXMgV2lsc29u IHdyb3RlOgo+Pj4+PiArc3RhdGljIHN0cnVjdCBpbnRlbF90aW1lbGluZSAqZ2V0X3RpbWVsaW5l KHN0cnVjdCBpOTE1X3JlcXVlc3QgKnJxKQo+Pj4+PiArewo+Pj4+PiArICAgICBzdHJ1Y3QgaW50 ZWxfdGltZWxpbmUgKnRsOwo+Pj4+PiArCj4+Pj4+ICsgICAgIC8qCj4+Pj4+ICsgICAgICAqIEV2 ZW4gdGhvdWdoIHdlIGFyZSBob2xkaW5nIHRoZSBlbmdpbmUtPmFjdGl2ZS5sb2NrIGhlcmUsIHRo ZXJlCj4+Pj4+ICsgICAgICAqIGlzIG5vIGNvbnRyb2wgb3ZlciB0aGUgc3VibWlzc2lvbiBxdWV1 ZSBwZXItc2UgYW5kIHdlIGFyZQo+Pj4+PiArICAgICAgKiBpbnNwZWN0aW5nIHRoZSBhY3RpdmUg c3RhdGUgYXQgYSByYW5kb20gcG9pbnQgaW4gdGltZSwgd2l0aCBhbgo+Pj4+PiArICAgICAgKiB1 bmtub3duIHF1ZXVlLiBQbGF5IHNhZmUgYW5kIG1ha2Ugc3VyZSB0aGUgdGltZWxpbmUgcmVtYWlu cyB2YWxpZC4KPj4+Pj4gKyAgICAgICogKE9ubHkgYmVpbmcgdXNlZCBmb3IgcHJldHR5IHByaW50 aW5nLCBvbmUgZXh0cmEga3JlZiBzaG91bGRuJ3QKPj4+Pj4gKyAgICAgICogY2F1c2UgYSBjYW1l bCBzdGFtcGVkZSEpCj4+Pj4+ICsgICAgICAqLwo+Pj4+PiArICAgICByY3VfcmVhZF9sb2NrKCk7 Cj4+Pj4+ICsgICAgIHRsID0gcmN1X2RlcmVmZXJlbmNlKHJxLT50aW1lbGluZSk7Cj4+Pj4+ICsg ICAgIGlmICgha3JlZl9nZXRfdW5sZXNzX3plcm8oJnRsLT5rcmVmKSkKPj4+Pj4gKyAgICAgICAg ICAgICB0bCA9IE5VTEw7Cj4+Pj4+ICsgICAgIHJjdV9yZWFkX3VubG9jaygpOwo+Pj4+Cj4+Pj4g SG93IGNhbiBpdCBiZSBOVUxMIHVuZGVyIHRoZSBhY3RpdmUgbG9jaz8gSXNuJ3QgdGhhdCB0aGUg c2FtZSBhc3NlcnRpb24KPj4+PiBmcm9tIGk5MTVfdGltZWxpbmVfZ2V0X2FjdGl2ZS4KPj4+Cj4+ PiBOb3QgTlVMTCwgYnV0IHJldGlyZWQuIFRoZSBkaWZmZXJlbmNlIGlzIHRoYXQgZHVyaW5nIHN1 Ym1pc3Npb24gd2Uga25vdwo+Pj4gdGhhdCB0aGlzIHJlcXVlc3QncyBjb250ZXh0L3RpbWVsaW5l IG11c3QgYmUgY3VycmVudGx5IHBpbm5lZCB1bnRpbAo+Pj4gYSBzdWJzZXF1ZW50IHJlcXVlc3Qg KGNvbnRhaW5pbmcgdGhlIGlkbGUtYmFycmllcnMpIGlzIHN1Ym1pdHRlZC4gVGhlCj4+PiBkYW5n ZXIgSSB3b3JyeSBhYm91dCBoZXJlIGlzIHRoYXQgc3Vic2VxdWVudCBpZGxlIHJlcXVlc3QgbWF5 IGJlIGFscmVhZHkKPj4+IHN1Ym1pdHRlZCBhbmQgc2luY2UgdGhlIHF1ZXVlZCByZXF1ZXN0cyBt YXkgKmFscmVhZHkqIGhhdmUgYmVlbiByZXRpcmVkLAo+Pj4gdGhlIHRpbWVsaW5lIG1heSBiZSB1 bnBpbm5lZCBhbmQgaW5kZWVkIGRyb3BwZWQgaXQncyBsYXN0IHJlZmVyZW5jZS4KPj4KPj4gQnV0 IGhlcmUgaXQgaXMgdW5kZXIgdGhlIGVuZ2luZS0+YWN0aXZlLmxvY2sgd2l0aCBpbnRlcnJ1cHRz IGRpc2FibGVkCj4+IGFuZCB0aGUgcmVxdWVzdHMgYXJlIGZldGNoZWQgZnJvbSBleGVjbGlzdHMg cG9ydHMuIFRpbWVsaW5lIGlzIG5vdAo+PiBndWFyYW50ZWVkIHRvIGJlIGtlcHQgYWxpdmUgdW5k ZXIgdGhlc2UgY29uZGl0aW9ucz8gaW50ZWxfY29udGV4dAo+PiByZWZlcmVuY2Ugd2lsbCBiZSBo ZWxkIHVudGlsIHByb2Nlc3NfY3NiIHNjaGVkdWxlcyBpdCBvdXQgc28gSSdkIGV4cGVjdAo+PiB0 aW1lbGluZSBhbmQgaHdzcCB0byBiZSB0aGVyZS4gQnV0IEkgY291bGQgYmUgbG9zdCBpbiB0aGUg bmV3IHNjaGVtZSBvZgo+PiB0aGluZ3MuCj4gCj4gSSBmZWx0IGl0IHdhcyBwcnVkZW50IHRvIG9u bHkgcmVseSBvbiB0aGUgYWN0aXZlIHBpbi4gWW91IGFyZSByaWdodCBpbgo+IHRoYXQgd2UgaGF2 ZSBhIGNvbnRleHQgcmVmZXJlbmNlIGlmIGl0IGlzIGluIGFjdGl2ZSwgYW5kIHRoYXQgY29udGV4 dAo+IGhvbGRzIGEgcmVmZXJlbmNlIHRvIHRoZSB0aW1lbGluZS4gQnV0Li4uIGVuZ2luZS0+YWN0 aXZlLmxvY2sgaXMgbm90Cj4gdGhlIGxvY2sgdGhhdCBndWFyZHMgcnEtPnRpbWVsaW5lLCBzbyBJ IGZlZWwgdW5lYXN5IG9uIGV4dGVuZGluZwo+IGk5MTVfcmVxdWVzdF9hY3RpdmVfdGltZWxpbmUo KSB0b28gZmFyLiBPdXRzaWRlIG9mIHRoZSBzdWJtaXNzaW9uCj4gcGF0aHdheSwgaW5zaWRlIGEg cHJldHR5IHByaW50ZXIsIGl0IGZlZWxzIHNhZmVyICh3aGF0ZXZlciBjaGFuZ2VzIG1heQo+IGNv bWUgd2UgZG9uJ3QgaGF2ZSB0byB3b3JyeSBhYm91dCBpdCkgdG8gbm90IGFzc3VtZSBhbnl0aGlu ZyBhbmQganVzdAo+IHVzZSB0aGUgZmFpbHNhZmUgcmN1X2RlcmVmZXJlbmNlKCkgKyBrcmVmLgoK V2VsbCBva2F5LCBJIGNhbiBhY2NlcHQgdGhhdCBpbiB0aGUgb3ZlcmFsbCBzaXR1YXRpb24uCgpS ZXZpZXdlZC1ieTogVHZydGtvIFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KClJl Z2FyZHMsCgpUdnJ0a28KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Au b3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwt Z2Z4