From mboxrd@z Thu Jan 1 00:00:00 1970 From: akash.goel@intel.com Subject: [PATCH] drm/i915 : Avoid superfluous invalidation of CPU cache lines Date: Tue, 24 Nov 2015 15:35:24 +0530 Message-ID: <1448359524-11814-1-git-send-email-akash.goel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 472AA6E832 for ; Tue, 24 Nov 2015 01:55:08 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: Akash Goel List-Id: intel-gfx@lists.freedesktop.org RnJvbTogQWthc2ggR29lbCA8YWthc2guZ29lbEBpbnRlbC5jb20+CgpXaGVuIHRoZSBvYmplY3Qg aXMgbW92ZWQgb3V0IG9mIENQVSByZWFkIGRvbWFpbiwgdGhlIGNhY2hlbGluZXMKYXJlIG5vdCBp bnZhbGlkYXRlZCBpbW1lZGlhdGVseS4gVGhlIGludmFsaWRhdGlvbiBpcyBkZWZlcnJlZCB0aWxs Cm5leHQgdGltZSB0aGUgb2JqZWN0IGlzIGJyb3VnaHQgYmFjayBpbnRvIENQVSByZWFkIGRvbWFp bi4KQnV0IHRoZSBpbnZhbGlkYXRpb24gaXMgZG9uZSB1bmNvbmRpdGlvbmFsbHksIGkuZS4gZXZl biBmb3IgdGhlIGNhc2UKd2hlcmUgdGhlIGNhY2hlbGluZXMgd2VyZSBmbHVzaGVkIHByZXZpb3Vz bHksIHdoZW4gdGhlIG9iamVjdCBtb3ZlZCBvdXQKb2YgQ1BVIHdyaXRlIGRvbWFpbi4gVGhpcyBp cyBhdm9pZGFibGUgYW5kIHdvdWxkIGxlYWQgdG8gc29tZSBvcHRpbWl6YXRpb24uClRob3VnaCB0 aGlzIGlzIG5vdCBhIGh5cG90aGV0aWNhbCBjYXNlLCBidXQgaXMgdW5saWtlbHkgdG8gb2NjdXIg b2Z0ZW4uClRoZSBhaW0gaXMgdG8gZGV0ZWN0IGNoYW5nZXMgdG8gdGhlIGJhY2tpbmcgc3RvcmFn ZSB3aGlsc3QgdGhlCmRhdGEgaXMgcG90ZW50aWFsbHkgaW4gdGhlIENQVSBjYWNoZSwgYW5kIG9u bHkgY2xmbHVzaCBpbiB0aG9zZSBjYXNlLgoKU2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxj aHJpc0BjaHJpcy13aWxzb24uY28udWs+ClNpZ25lZC1vZmYtYnk6IEFrYXNoIEdvZWwgPGFrYXNo LmdvZWxAaW50ZWwuY29tPgotLS0KIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggfCAx ICsKIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgfCA5ICsrKysrKysrLQogMiBmaWxl cyBjaGFuZ2VkLCA5IGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKCmRpZmYgLS1naXQgYS9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9kcnYuaAppbmRleCBkZjkzMTZmLi5mZWRiNzFkIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9k cm0vaTkxNS9pOTE1X2Rydi5oCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmgK QEAgLTIwOTgsNiArMjA5OCw3IEBAIHN0cnVjdCBkcm1faTkxNV9nZW1fb2JqZWN0IHsKIAl1bnNp Z25lZCBsb25nIGd0X3JvOjE7CiAJdW5zaWduZWQgaW50IGNhY2hlX2xldmVsOjM7CiAJdW5zaWdu ZWQgaW50IGNhY2hlX2RpcnR5OjE7CisJdW5zaWduZWQgaW50IGNhY2hlX2NsZWFuOjE7CiAKIAl1 bnNpZ25lZCBpbnQgZnJvbnRidWZmZXJfYml0czpJTlRFTF9GUk9OVEJVRkZFUl9CSVRTOwogCmRp ZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jIGIvZHJpdmVycy9ncHUv ZHJtL2k5MTUvaTkxNV9nZW0uYwppbmRleCAxOWMyODJiLi5hMTNmZmQ0IDEwMDY0NAotLS0gYS9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2k5MTVfZ2VtLmMKQEAgLTM1NTIsNiArMzU1Miw3IEBAIGk5MTVfZ2VtX2NsZmx1c2hfb2JqZWN0 KHN0cnVjdCBkcm1faTkxNV9nZW1fb2JqZWN0ICpvYmosCiAJdHJhY2VfaTkxNV9nZW1fb2JqZWN0 X2NsZmx1c2gob2JqKTsKIAlkcm1fY2xmbHVzaF9zZyhvYmotPnBhZ2VzKTsKIAlvYmotPmNhY2hl X2RpcnR5ID0gZmFsc2U7CisJb2JqLT5jYWNoZV9jbGVhbiA9IHRydWU7CiAKIAlyZXR1cm4gdHJ1 ZTsKIH0KQEAgLTM5ODIsNyArMzk4MywxMyBAQCBpOTE1X2dlbV9vYmplY3Rfc2V0X3RvX2NwdV9k b21haW4oc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKm9iaiwgYm9vbCB3cml0ZSkKIAogCS8q IEZsdXNoIHRoZSBDUFUgY2FjaGUgaWYgaXQncyBzdGlsbCBpbnZhbGlkLiAqLwogCWlmICgob2Jq LT5iYXNlLnJlYWRfZG9tYWlucyAmIEk5MTVfR0VNX0RPTUFJTl9DUFUpID09IDApIHsKLQkJaTkx NV9nZW1fY2xmbHVzaF9vYmplY3Qob2JqLCBmYWxzZSk7CisJCS8qIEludmFsaWRhdGlvbiBub3Qg bmVlZGVkIGFzIHRoZXJlIHNob3VsZCBub3QgYmUgYW55IGRhdGEgaW4KKwkJICogQ1BVIGNhY2hl IGxpbmVzIGZvciB0aGlzIG9iamVjdCwgc2luY2UgY2xmbHVzaCB3b3VsZCBoYXZlCisJCSAqIGhh cHBlbmVkIHdoZW4gdGhlIG9iamVjdCBsYXN0IG1vdmVkIG91dCBvZiBDUFUgd3JpdGUgZG9tYWlu LgorCQkgKi8KKwkJaWYgKCFvYmotPmNhY2hlX2NsZWFuKQorCQkJaTkxNV9nZW1fY2xmbHVzaF9v YmplY3Qob2JqLCBmYWxzZSk7CisJCW9iai0+Y2FjaGVfY2xlYW4gPSBmYWxzZTsKIAogCQlvYmot PmJhc2UucmVhZF9kb21haW5zIHw9IEk5MTVfR0VNX0RPTUFJTl9DUFU7CiAJfQotLSAKMS45LjIK Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdm eCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==