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 12:36:48 +0100 Message-ID: <5704F4D0.8060005@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> <5704DBB0.2020600@linux.intel.com> <20160406100529.GH18736@nuc-i3427.alporthouse.com> 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 ESMTP id BCB2B6E8D6 for ; Wed, 6 Apr 2016 11:36:49 +0000 (UTC) In-Reply-To: <20160406100529.GH18736@nuc-i3427.alporthouse.com> 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 Ck9uIDA2LzA0LzE2IDExOjA1LCBDaHJpcyBXaWxzb24gd3JvdGU6Cj4gT24gV2VkLCBBcHIgMDYs IDIwMTYgYXQgMTA6NDk6MzZBTSArMDEwMCwgVHZydGtvIFVyc3VsaW4gd3JvdGU6Cj4+PiBkaWZm IC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYyBiL2RyaXZlcnMvZ3B1L2Ry bS9pOTE1L2k5MTVfZ2VtLmMKPj4+IGluZGV4IDk4NWYwNjdjMWYwZS4uZGM4ZTFiNzZjODk2IDEw MDY0NAo+Pj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+Pj4gKysrIGIv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+Pj4gQEAgLTIyMzMsNyArMjIzMywxMCBA QCBpOTE1X2dlbV9vYmplY3RfcHV0X3BhZ2VzKHN0cnVjdCBkcm1faTkxNV9nZW1fb2JqZWN0ICpv YmopCj4+PiAgIAlsaXN0X2RlbCgmb2JqLT5nbG9iYWxfbGlzdCk7Cj4+Pgo+Pj4gICAJaWYgKG9i ai0+dm1hcHBpbmcpIHsKPj4+IC0JCXZ1bm1hcChvYmotPnZtYXBwaW5nKTsKPj4+ICsJCWlmIChv YmotPmJhc2Uuc2l6ZSA9PSBQQUdFX1NJWkUpCj4+PiArCQkJa3VubWFwKGttYXBfdG9fcGFnZShv YmotPnZtYXBwaW5nKSk7Cj4+PiArCQllbHNlCj4+PiArCQkJdnVubWFwKG9iai0+dm1hcHBpbmcp Owo+Pgo+PiBDYW4ndCB0aGluayBvZiBhIHJlYXNvbiB3aHkgaXQgd291bGQgYmUgYmV0dGVyIGJ1 dCB0aGVyZSBpcyBhbHNvCj4+IGlzX3ZtYWxsb2NfYWRkcihhZGRyKSBhcyB1c2VkIGJ5IGt2ZnJl ZS4KPgo+IEZvciBjb25zaXN0ZW5jeSB3aXRoIHRoZSBzaHJpbmtlciAoc2VlIGJlbG93KS4KPgo+ Pj4gICAJCW9iai0+dm1hcHBpbmcgPSBOVUxMOwo+Pj4gICAJfQo+Pj4KPj4+IEBAIC0yNDE2LDE1 ICsyNDE5LDIyIEBAIHZvaWQgKmk5MTVfZ2VtX29iamVjdF9waW5fdm1hcChzdHJ1Y3QgZHJtX2k5 MTVfZ2VtX29iamVjdCAqb2JqKQo+Pj4gICAJaTkxNV9nZW1fb2JqZWN0X3Bpbl9wYWdlcyhvYmop Owo+Pj4KPj4+ICAgCWlmIChvYmotPnZtYXBwaW5nID09IE5VTEwpIHsKPj4+IC0JCXN0cnVjdCBz Z19wYWdlX2l0ZXIgc2dfaXRlcjsKPj4+ICAgCQlzdHJ1Y3QgcGFnZSAqKnBhZ2VzOwo+Pj4gLQkJ aW50IG47Cj4+Pgo+Pj4gLQkJbiA9IG9iai0+YmFzZS5zaXplID4+IFBBR0VfU0hJRlQ7Cj4+PiAt CQlwYWdlcyA9IGRybV9tYWxsb2NfZ2ZwKG4sIHNpemVvZigqcGFnZXMpLCBHRlBfVEVNUE9SQVJZ KTsKPj4+ICsJCXBhZ2VzID0gTlVMTDsKPj4+ICsJCWlmIChvYmotPmJhc2Uuc2l6ZSA9PSBQQUdF X1NJWkUpCj4+PiArCQkJb2JqLT52bWFwcGluZyA9IGttYXAoc2dfcGFnZShvYmotPnBhZ2VzLT5z Z2wpKTsKPj4+ICsJCWVsc2UKPj4+ICsJCQlwYWdlcyA9IGRybV9tYWxsb2NfZ2ZwKG9iai0+YmFz ZS5zaXplID4+IFBBR0VfU0hJRlQsCj4+PiArCQkJCQkgICAgICAgc2l6ZW9mKCpwYWdlcyksCj4+ PiArCQkJCQkgICAgICAgR0ZQX1RFTVBPUkFSWSk7Cj4+PiAgIAkJaWYgKHBhZ2VzICE9IE5VTEwp IHsKPj4+ICsJCQlzdHJ1Y3Qgc2dfcGFnZV9pdGVyIHNnX2l0ZXI7Cj4+PiArCQkJaW50IG47Cj4+ PiArCj4+PiAgIAkJCW4gPSAwOwo+Pj4gLQkJCWZvcl9lYWNoX3NnX3BhZ2Uob2JqLT5wYWdlcy0+ c2dsLCAmc2dfaXRlciwgb2JqLT5wYWdlcy0+bmVudHMsIDApCj4+PiArCQkJZm9yX2VhY2hfc2df cGFnZShvYmotPnBhZ2VzLT5zZ2wsICZzZ19pdGVyLAo+Pj4gKwkJCQkJIG9iai0+cGFnZXMtPm5l bnRzLCAwKQo+Pj4gICAJCQkJcGFnZXNbbisrXSA9IHNnX3BhZ2VfaXRlcl9wYWdlKCZzZ19pdGVy KTsKPj4+Cj4+PiAgIAkJCW9iai0+dm1hcHBpbmcgPSB2bWFwKHBhZ2VzLCBuLCAwLCBQQUdFX0tF Uk5FTCk7Cj4+Pgo+Pgo+PiBUd28gcHJvYmxlbXMgSSBjYW4gc3BvdCBhcmU6Cj4+Cj4+IDEuIENh bGxlcnMgb2YgcGluX3ZtYXAgbm93IGRvbid0IGtub3cgd2hpY2gga2luZCBvZiBhZGRyZXNzIHRo ZXkgYXJlCj4+IGdldHRpbmcuIE1heWJlIGNhbGwgaXQgcGluX2t2bWFwIG9yIHNvbWV0aGluZz8g SnVzdCBtZW50aW9uIGluCj4+IGtlcm5lbGRvYyBjb3VsZCBiZSBlbm91Z2guCj4KPiBJIHRoaW5r IGp1c3QgbWVudGlvbiwgYW5kIHdlIGNhbiByZW5hbWUgdGhpcyB0byBpOTE1X2dlbV9vYmplY3Rf cGluX21hcCgpLgo+IEhtbS4gSSBsaWtlZCB0aGUgcGluIGluIHRoZSBuYW1lIHNpbmNlIGl0IHRp ZXMgdG8gdG8gcGluX3BhZ2VzIChsYXRlcgo+IEkgcGxhbiB0byBjaGFuZ2UgdGhhdCB0byBnZXRf cGFnZXMgYW5kIGdldF92bWFwL2dldF9tYXAgYXMgdGhlIHBpbgo+IGJlY29tZXMgaW1wbGljaXQp Lgo+Cj4+IDIuIFNocmlua2VyIHdpbGwgdHJ5IHRvIGtpY2sgb3V0IGttYXBwZWQgb2JqZWN0cyBi ZWNhdXNlIHRoZXkgaGF2ZQo+PiBvYmotPnZtYXBwaW5nIHNldC4KPgo+IE5vdCBjYXJpbmcgdGhh dCBtdWNoIHNpbmNlIHRoZSB2bWFwX3B1cmdlIGlzIHZlcnkgaGVhdnkgd2VpZ2h0LCBidXQgd2UK PiBjYW4gYXBwbHkgaXNfdm1hbGxvY19hZGRyKCkgdG8gdGhlIHNocmlua2VyLgo+Cj4gT2ssIGhh cHB5IHRvIGNhbGwgdGhpcyBvYmotPm1hcHBpbmcgYW5kIGk5MTVfZ2VtX29iamVjdF9waW5fbWFw KCkgPwoKU291bmRzIGdvb2QuIChJbmNsdWRpbmcgdGhlIGlzX3ZtYWxsb2NfYWRkcigpIHNtYXJ0 ZW5pbmcgaW4gdGhlIHNocmlua2VyLikKClJlZ2FyZHMsCgpUdnJ0a28KCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK