From mboxrd@z Thu Jan 1 00:00:00 1970 From: ville.syrjala@linux.intel.com Subject: [PATCH v3 1/2] drm/i915: Eliminate race from gen2/3 page flip interrupt handling Date: Tue, 19 Feb 2013 15:16:38 +0200 Message-ID: <1361279799-16582-2-git-send-email-ville.syrjala@linux.intel.com> References: <1361279799-16582-1-git-send-email-ville.syrjala@linux.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 5B322E5CC9 for ; Tue, 19 Feb 2013 05:16:57 -0800 (PST) In-Reply-To: <1361279799-16582-1-git-send-email-ville.syrjala@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org RnJvbTogVmlsbGUgU3lyasOkbMOkIDx2aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNvbT4KCklm IHRoZSBpbnRlcnJ1cHQgaGFuZGxlciB3ZXJlIHRvIHByb2Nlc3MgYSBwcmV2aW91cyB2Ymxhbmsg aW50ZXJydXB0IGFuZAp0aGUgZm9sbG93aW5nIGZsaXAgcGVuZGluZyBpbnRlcnJ1cHQgYXQgdGhl IHNhbWUgdGltZSwgdGhlIHBhZ2UgZmxpcAp3b3VsZCBiZSBjb21wbGV0ZWQgdG9vIHNvb24uCgpU byBlbGltaW5hdGUgdGhpcyByYWNlLCBjaGVjayB0aGUgbGl2ZSBwZW5kaW5nIGZsaXAgc3RhdHVz IGZyb20gdGhlIElTUgpyZWdpc3RlciBiZWZvcmUgZmluaXNoaW5nIHRoZSBwYWdlIGZsaXAuCgp2 MjogQWRkZWQgYSBjb21tZW50IGV4cGxhaW5pbmcgdGhlIGxvZ2ljIChieSBDaHJpcyBXaWxzb24p CnYzOiBGaXggYSB0eXBvIGluIHRoZSBjb21tZW50CgpSZXZpZXdlZC1ieTogQ2hyaXMgV2lsc29u IDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+ClRlc3RlZC1ieTogQ2hyaXMgV2lsc29uIDxjaHJp c0BjaHJpcy13aWxzb24uY28udWs+ClNpZ25lZC1vZmYtYnk6IFZpbGxlIFN5cmrDpGzDpCA8dmls bGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9pcnEuYyB8IDI3ICsrKysrKysrKysrKysrKysrKysrKy0tLS0tLQogMSBmaWxlIGNoYW5nZWQs IDIxIGluc2VydGlvbnMoKyksIDYgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9n cHUvZHJtL2k5MTUvaTkxNV9pcnEuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfaXJxLmMK aW5kZXggOWZkZTQ5YS4uNjQ4ODI0OSAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv aTkxNV9pcnEuYworKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2lycS5jCkBAIC0yMjg0 LDggKzIyODQsMTEgQEAgc3RhdGljIGlycXJldHVybl90IGk4eHhfaXJxX2hhbmRsZXIoaW50IGly cSwgdm9pZCAqYXJnKQogCQkgICAgZHJtX2hhbmRsZV92YmxhbmsoZGV2LCAwKSkgewogCQkJaWYg KGlpciAmIEk5MTVfRElTUExBWV9QTEFORV9BX0ZMSVBfUEVORElOR19JTlRFUlJVUFQpIHsKIAkJ CQlpbnRlbF9wcmVwYXJlX3BhZ2VfZmxpcChkZXYsIDApOwotCQkJCWludGVsX2ZpbmlzaF9wYWdl X2ZsaXAoZGV2LCAwKTsKLQkJCQlmbGlwX21hc2sgJj0gfkk5MTVfRElTUExBWV9QTEFORV9BX0ZM SVBfUEVORElOR19JTlRFUlJVUFQ7CisKKwkJCQlpZiAoKEk5MTVfUkVBRDE2KElTUikgJiBJOTE1 X0RJU1BMQVlfUExBTkVfQV9GTElQX1BFTkRJTkdfSU5URVJSVVBUKSA9PSAwKSB7CisJCQkJCWlu dGVsX2ZpbmlzaF9wYWdlX2ZsaXAoZGV2LCAwKTsKKwkJCQkJZmxpcF9tYXNrICY9IH5JOTE1X0RJ U1BMQVlfUExBTkVfQV9GTElQX1BFTkRJTkdfSU5URVJSVVBUOworCQkJCX0KIAkJCX0KIAkJfQog CkBAIC0yMjkzLDggKzIyOTYsMTEgQEAgc3RhdGljIGlycXJldHVybl90IGk4eHhfaXJxX2hhbmRs ZXIoaW50IGlycSwgdm9pZCAqYXJnKQogCQkgICAgZHJtX2hhbmRsZV92YmxhbmsoZGV2LCAxKSkg ewogCQkJaWYgKGlpciAmIEk5MTVfRElTUExBWV9QTEFORV9CX0ZMSVBfUEVORElOR19JTlRFUlJV UFQpIHsKIAkJCQlpbnRlbF9wcmVwYXJlX3BhZ2VfZmxpcChkZXYsIDEpOwotCQkJCWludGVsX2Zp bmlzaF9wYWdlX2ZsaXAoZGV2LCAxKTsKLQkJCQlmbGlwX21hc2sgJj0gfkk5MTVfRElTUExBWV9Q TEFORV9CX0ZMSVBfUEVORElOR19JTlRFUlJVUFQ7CisKKwkJCQlpZiAoKEk5MTVfUkVBRDE2KElT UikgJiBJOTE1X0RJU1BMQVlfUExBTkVfQl9GTElQX1BFTkRJTkdfSU5URVJSVVBUKSA9PSAwKSB7 CisJCQkJCWludGVsX2ZpbmlzaF9wYWdlX2ZsaXAoZGV2LCAxKTsKKwkJCQkJZmxpcF9tYXNrICY9 IH5JOTE1X0RJU1BMQVlfUExBTkVfQl9GTElQX1BFTkRJTkdfSU5URVJSVVBUOworCQkJCX0KIAkJ CX0KIAkJfQogCkBAIC0yNDkxLDggKzI0OTcsMTcgQEAgc3RhdGljIGlycXJldHVybl90IGk5MTVf aXJxX2hhbmRsZXIoaW50IGlycSwgdm9pZCAqYXJnKQogCQkJICAgIGRybV9oYW5kbGVfdmJsYW5r KGRldiwgcGlwZSkpIHsKIAkJCQlpZiAoaWlyICYgZmxpcFtwbGFuZV0pIHsKIAkJCQkJaW50ZWxf cHJlcGFyZV9wYWdlX2ZsaXAoZGV2LCBwbGFuZSk7Ci0JCQkJCWludGVsX2ZpbmlzaF9wYWdlX2Zs aXAoZGV2LCBwaXBlKTsKLQkJCQkJZmxpcF9tYXNrICY9IH5mbGlwW3BsYW5lXTsKKworCQkJCQkv KiBXZSBkZXRlY3QgRmxpcERvbmUgYnkgbG9va2luZyBmb3IgdGhlIGNoYW5nZSBpbiBQZW5kaW5n RmxpcCBmcm9tICcxJworCQkJCQkgKiB0byAnMCcgb24gdGhlIGZvbGxvd2luZyB2YmxhbmssIGku ZS4gSUlSIGhhcyB0aGUgUGVuZGluZ2ZsaXAKKwkJCQkJICogYXNzZXJ0ZWQgZm9sbG93aW5nIHRo ZSBNSV9ESVNQTEFZX0ZMSVAsIGJ1dCBJU1IgaXMgZGVhc3NlcnRlZCwgaGVuY2UKKwkJCQkJICog dGhlIGZsaXAgaXMgY29tcGxldGVkIChubyBsb25nZXIgcGVuZGluZykuIFNpbmNlIHRoaXMgZG9l c24ndCByYWlzZSBhbgorCQkJCQkgKiBpbnRlcnJ1cHQgcGVyIHNlLCB3ZSB3YXRjaCBmb3IgdGhl IGNoYW5nZSBhdCB2YmxhbmsuCisJCQkJCSAqLworCQkJCQlpZiAoKEk5MTVfUkVBRChJU1IpICYg ZmxpcFtwbGFuZV0pID09IDApIHsKKwkJCQkJCWludGVsX2ZpbmlzaF9wYWdlX2ZsaXAoZGV2LCBw aXBlKTsKKwkJCQkJCWZsaXBfbWFzayAmPSB+ZmxpcFtwbGFuZV07CisJCQkJCX0KIAkJCQl9CiAJ CQl9CiAKLS0gCjEuNy4xMi40CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lu dGVsLWdmeAo=