From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: Re: [PATCH 6/6] drm/i915: Avoid allocating a vmap arena for a single page Date: Wed, 6 Apr 2016 10:49:36 +0100 Message-ID: <5704DBB0.2020600@linux.intel.com> References: <1459861057-25931-1-git-send-email-chris@chris-wilson.co.uk> <1459861057-25931-7-git-send-email-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 mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 6F9086E3D9 for ; Wed, 6 Apr 2016 09:49:38 +0000 (UTC) In-Reply-To: <1459861057-25931-7-git-send-email-chris@chris-wilson.co.uk> 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 CgpPbiAwNS8wNC8xNiAxMzo1NywgQ2hyaXMgV2lsc29uIHdyb3RlOgo+IElmIHdlIHdhbnQgYSBj b250aWd1b3VzIG1hcHBpbmcgb2YgYSBzaW5nbGUgcGFnZSBzaXplZCBvYmplY3QsIHdlIGNhbgo+ IGZvcmdvIHVzaW5nIHZtYXAoKSBhbmQganVzdCB1c2UgYSByZWd1bGFyIGttYXAoKS4gTm90ZSB0 aGF0IHRoaXMgaXMgb25seQo+IHN1aXRhYmxlIGlmIHRoZSBkZXNpcmVkIHBncHJvdF90IGlzIGNv bXB0YWJpdGlibGUuCgpZb3Ugbm90aWNlZCB0aGUgc3BlbGxpbmcgYWxyZWFkeS4gOikKCj4KPiBT aWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KPiAt LS0KPiAgIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgfCAyMiArKysrKysrKysrKysr KysrLS0tLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgMTYgaW5zZXJ0aW9ucygrKSwgNiBkZWxldGlv bnMoLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jIGIv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+IGluZGV4IDk4NWYwNjdjMWYwZS4uZGM4 ZTFiNzZjODk2IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMK PiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCj4gQEAgLTIyMzMsNyArMjIz MywxMCBAQCBpOTE1X2dlbV9vYmplY3RfcHV0X3BhZ2VzKHN0cnVjdCBkcm1faTkxNV9nZW1fb2Jq ZWN0ICpvYmopCj4gICAJbGlzdF9kZWwoJm9iai0+Z2xvYmFsX2xpc3QpOwo+Cj4gICAJaWYgKG9i ai0+dm1hcHBpbmcpIHsKPiAtCQl2dW5tYXAob2JqLT52bWFwcGluZyk7Cj4gKwkJaWYgKG9iai0+ YmFzZS5zaXplID09IFBBR0VfU0laRSkKPiArCQkJa3VubWFwKGttYXBfdG9fcGFnZShvYmotPnZt YXBwaW5nKSk7Cj4gKwkJZWxzZQo+ICsJCQl2dW5tYXAob2JqLT52bWFwcGluZyk7CgpDYW4ndCB0 aGluayBvZiBhIHJlYXNvbiB3aHkgaXQgd291bGQgYmUgYmV0dGVyIGJ1dCB0aGVyZSBpcyBhbHNv IAppc192bWFsbG9jX2FkZHIoYWRkcikgYXMgdXNlZCBieSBrdmZyZWUuCgo+ICAgCQlvYmotPnZt YXBwaW5nID0gTlVMTDsKPiAgIAl9Cj4KPiBAQCAtMjQxNiwxNSArMjQxOSwyMiBAQCB2b2lkICpp OTE1X2dlbV9vYmplY3RfcGluX3ZtYXAoc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKm9iaikK PiAgIAlpOTE1X2dlbV9vYmplY3RfcGluX3BhZ2VzKG9iaik7Cj4KPiAgIAlpZiAob2JqLT52bWFw cGluZyA9PSBOVUxMKSB7Cj4gLQkJc3RydWN0IHNnX3BhZ2VfaXRlciBzZ19pdGVyOwo+ICAgCQlz dHJ1Y3QgcGFnZSAqKnBhZ2VzOwo+IC0JCWludCBuOwo+Cj4gLQkJbiA9IG9iai0+YmFzZS5zaXpl ID4+IFBBR0VfU0hJRlQ7Cj4gLQkJcGFnZXMgPSBkcm1fbWFsbG9jX2dmcChuLCBzaXplb2YoKnBh Z2VzKSwgR0ZQX1RFTVBPUkFSWSk7Cj4gKwkJcGFnZXMgPSBOVUxMOwo+ICsJCWlmIChvYmotPmJh c2Uuc2l6ZSA9PSBQQUdFX1NJWkUpCj4gKwkJCW9iai0+dm1hcHBpbmcgPSBrbWFwKHNnX3BhZ2Uo b2JqLT5wYWdlcy0+c2dsKSk7Cj4gKwkJZWxzZQo+ICsJCQlwYWdlcyA9IGRybV9tYWxsb2NfZ2Zw KG9iai0+YmFzZS5zaXplID4+IFBBR0VfU0hJRlQsCj4gKwkJCQkJICAgICAgIHNpemVvZigqcGFn ZXMpLAo+ICsJCQkJCSAgICAgICBHRlBfVEVNUE9SQVJZKTsKPiAgIAkJaWYgKHBhZ2VzICE9IE5V TEwpIHsKPiArCQkJc3RydWN0IHNnX3BhZ2VfaXRlciBzZ19pdGVyOwo+ICsJCQlpbnQgbjsKPiAr Cj4gICAJCQluID0gMDsKPiAtCQkJZm9yX2VhY2hfc2dfcGFnZShvYmotPnBhZ2VzLT5zZ2wsICZz Z19pdGVyLCBvYmotPnBhZ2VzLT5uZW50cywgMCkKPiArCQkJZm9yX2VhY2hfc2dfcGFnZShvYmot PnBhZ2VzLT5zZ2wsICZzZ19pdGVyLAo+ICsJCQkJCSBvYmotPnBhZ2VzLT5uZW50cywgMCkKPiAg IAkJCQlwYWdlc1tuKytdID0gc2dfcGFnZV9pdGVyX3BhZ2UoJnNnX2l0ZXIpOwo+Cj4gICAJCQlv YmotPnZtYXBwaW5nID0gdm1hcChwYWdlcywgbiwgMCwgUEFHRV9LRVJORUwpOwo+CgpUd28gcHJv YmxlbXMgSSBjYW4gc3BvdCBhcmU6CgoxLiBDYWxsZXJzIG9mIHBpbl92bWFwIG5vdyBkb24ndCBr bm93IHdoaWNoIGtpbmQgb2YgYWRkcmVzcyB0aGV5IGFyZSAKZ2V0dGluZy4gTWF5YmUgY2FsbCBp dCBwaW5fa3ZtYXAgb3Igc29tZXRoaW5nPyBKdXN0IG1lbnRpb24gaW4ga2VybmVsZG9jIApjb3Vs ZCBiZSBlbm91Z2guCgoyLiBTaHJpbmtlciB3aWxsIHRyeSB0byBraWNrIG91dCBrbWFwcGVkIG9i amVjdHMgYmVjYXVzZSB0aGV5IGhhdmUgCm9iai0+dm1hcHBpbmcgc2V0LgoKUmVnYXJkcywKClR2 cnRrbwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRl bC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6 Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK