From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH] drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU Date: Thu, 9 Nov 2017 08:37:29 +0000 Message-ID: <07e0da43-bd3a-2590-e9b1-68f83bf0b936@linux.intel.com> References: <20171109082048.29408-1-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 mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 178056E87A for ; Thu, 9 Nov 2017 08:37:30 +0000 (UTC) In-Reply-To: <20171109082048.29408-1-chris@chris-wilson.co.uk> Content-Language: en-GB 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 Ck9uIDA5LzExLzIwMTcgMDg6MjAsIENocmlzIFdpbHNvbiB3cm90ZToKPiBXaGVuIHdlIGNsb3Nl IHRoZSBWTUEsIHdlIHVuYmluZCBpdCBmcm9tIHRoZSBwcGd0dCBhbmQgdGVhciBkb3duIHRoZQo+ IHBhZ2UgZGlyZWN0b3J5IHBvaW50aW5nIGF0IGl0LiBUaGF0IG1heSB0cmlnZ2VyIHVzIHRvIHJl dHVybiBXQyBwYWdlcwo+IGJhY2sgdG8gdGhlIHN5c3RlbSwgcmVxdWlyaW5nIGNvbnZlcnNpb24g YmFjayB0byBXQiB3aGljaCBpdHNlbGYgbWF5Cj4gc2xlZXAuIFRoYXQgbWFrZXMgaTkxNV92bWFf Y2xvc2UoKSB1bnN1aXRhYmxlIGZvciB1c2UgaW5zaWRlIHRoZSBSQ1UKPiByZWFkIGxvY2ssIHdo aWNoIHdlIG5lZWQgdG8gaG9sZCB0byBpdGVyYXRlIHRoZSByYWRpeHRyZWUuCj4gCj4gVGhlIGZp eCBpcyBxdWl0ZSBzaW1wbGUsIHdlIGNhbiBjbG9zZSBhbGwgdGhlIFZNQSBhcyB3ZSBjbG9zZSB0 aGUgcHBndHQsCj4gd2Ugb25seSBuZWVkIHRvIGRvIHRoYXQgaW5zdGVhZCBvZiBjbG9zaW5nIHRo ZW0gZHVyaW5nIGRlc3RydWN0aW9uIG9mCj4gdGhlIExVVC4KPiAKPiBCdWd6aWxsYTogaHR0cHM6 Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTAzNjM4Cj4gRml4ZXM6IDU0 N2RhNzZiNTc3NyAoImRybS9pOTE1OiBIb2xkIHJjdV9yZWFkX2xvY2sgd2hlbiBpdGVyYXRpbmcg b3ZlciB0aGUgcmFkaXh0cmVlICh2bWEgaWRyKSIpCj4gRml4ZXM6IGQxYjQ4YzFlNzE4NCAoImRy bS9pOTE1OiBSZXBsYWNlIGV4ZWNidWYgdm1hIGh0IHdpdGggYW4gaWRyIikKPiBDYzogVHZydGtv IFVyc3VsaW4gPHR2cnRrby51cnN1bGluQGludGVsLmNvbT4KPiBDYzogSm9vbmFzIExhaHRpbmVu IDxqb29uYXMubGFodGluZW5AbGludXguaW50ZWwuY29tPgo+IENjOiBNYXR0aGV3IEF1bGQgPG1h dHRoZXcud2lsbGlhbS5hdWxkQGdtYWlsLmNvbT4KPiAtLS0KPiAgIGRyaXZlcnMvZ3B1L2RybS9p OTE1L2k5MTVfZ2VtX2NvbnRleHQuYyB8IDEwICsrKy0tLS0tLS0KPiAgIDEgZmlsZSBjaGFuZ2Vk LCAzIGluc2VydGlvbnMoKyksIDcgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtX2NvbnRleHQuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2k5MTVfZ2VtX2NvbnRleHQuYwo+IGluZGV4IDEwYWZmYjM1YWM1Ni4uMGUxYzQ2MjY4NzBlIDEw MDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtX2NvbnRleHQuYwo+ICsr KyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtX2NvbnRleHQuYwo+IEBAIC0xMDcsMTQg KzEwNyw5IEBAIHN0YXRpYyB2b2lkIGx1dF9jbG9zZShzdHJ1Y3QgaTkxNV9nZW1fY29udGV4dCAq Y3R4KQo+ICAgCXJjdV9yZWFkX2xvY2soKTsKPiAgIAlyYWRpeF90cmVlX2Zvcl9lYWNoX3Nsb3Qo c2xvdCwgJmN0eC0+aGFuZGxlc192bWEsICZpdGVyLCAwKSB7Cj4gICAJCXN0cnVjdCBpOTE1X3Zt YSAqdm1hID0gcmN1X2RlcmVmZXJlbmNlX3Jhdygqc2xvdCk7Cj4gLQkJc3RydWN0IGRybV9pOTE1 X2dlbV9vYmplY3QgKm9iaiA9IHZtYS0+b2JqOwo+ICAgCj4gICAJCXJhZGl4X3RyZWVfaXRlcl9k ZWxldGUoJmN0eC0+aGFuZGxlc192bWEsICZpdGVyLCBzbG90KTsKPiAtCj4gLQkJaWYgKCFpOTE1 X3ZtYV9pc19nZ3R0KHZtYSkpCj4gLQkJCWk5MTVfdm1hX2Nsb3NlKHZtYSk7Cj4gLQo+IC0JCV9f aTkxNV9nZW1fb2JqZWN0X3JlbGVhc2VfdW5sZXNzX2FjdGl2ZShvYmopOwo+ICsJCV9faTkxNV9n ZW1fb2JqZWN0X3JlbGVhc2VfdW5sZXNzX2FjdGl2ZSh2bWEtPm9iaik7Cj4gICAJfQo+ICAgCXJj dV9yZWFkX3VubG9jaygpOwo+ICAgfQo+IEBAIC0yMDAsMTAgKzE5NSwxMSBAQCBzdGF0aWMgdm9p ZCBjb250ZXh0X2Nsb3NlKHN0cnVjdCBpOTE1X2dlbV9jb250ZXh0ICpjdHgpCj4gICB7Cj4gICAJ aTkxNV9nZW1fY29udGV4dF9zZXRfY2xvc2VkKGN0eCk7Cj4gICAKPiAtCWx1dF9jbG9zZShjdHgp Owo+ICAgCWlmIChjdHgtPnBwZ3R0KQo+ICAgCQlpOTE1X3BwZ3R0X2Nsb3NlKCZjdHgtPnBwZ3R0 LT5iYXNlKTsKPiAgIAo+ICsJbHV0X2Nsb3NlKGN0eCk7Cj4gKwo+ICAgCWN0eC0+ZmlsZV9wcml2 ID0gRVJSX1BUUigtRUJBREYpOwo+ICAgCWk5MTVfZ2VtX2NvbnRleHRfcHV0KGN0eCk7Cj4gICB9 Cj4gCgpMb29rcyBzdHJhaWdodGZvcndhcmQgZW5vdWdoLiBXYXMgYSBiaXQgdW5zdXJlIGFib3V0 IGhvdyB0aGUgcHJlLXBwZ3R0IAp3b3JsZCB3b3JrcyBidXQgdGhhdCB0b28gbG9va3MgZmluZS4K ClJldmlld2VkLWJ5OiBUdnJ0a28gVXJzdWxpbiA8dHZydGtvLnVyc3VsaW5AaW50ZWwuY29tPgoK UmVnYXJkcywKClR2cnRrbwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRl bC1nZngK