From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: [PATCH 1/2] drm/i915/selftests: Calculate maximum ring size for preemption chain Date: Thu, 21 Mar 2019 07:37:47 +0000 Message-ID: <20190321073748.5764-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id A672B89DB7 for ; Thu, 21 Mar 2019 07:37:57 +0000 (UTC) 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 List-Id: intel-gfx@lists.freedesktop.org MzIgaXMgdG9vIG1hbnkgZm9yIHRoZSBsaWtlcyBvZiBrYmwsIGFuZCBpbiBvcmRlciB0byBpbnNl cnQgdGhhdCBtYW55CnJlcXVlc3RzIGludG8gdGhlIHJpbmcgcmVxdWlyZXMgdXMgdG8gZGVjbGFy ZSB0aGUgZmlyc3QgZmV3IGh1bmcgLS0KdW5kZXJzdGFuZGFibHkgYSBzbG93IGFuZCB1bmV4cGVj dGVkIHByb2Nlc3MuIEluc3RlYWQsIG1lYXN1cmUgdGhlIHNpemUKb2YgYSBzaW5nZSByZXF1ZXN0 cyBhbmQgdXNlIHRoYXQgdG8gZXN0aW1hdGUgdGhlIHVwcGVyIGJvdW5kIG9uIHRoZQpjaGFpbiBs ZW5ndGggd2UgY2FuIHVzZSBmb3Igb3VyIHRlc3QsIHJlbWVtYmVyaW5nIHRvIGZsdXNoIHRoZSBw cmV2aW91cwpjaGFpbiBiZXR3ZWVuIHRlc3RzIGZvciBzYWZldHkuCgpTaWduZWQtb2ZmLWJ5OiBD aHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KQ2M6IFR2cnRrbyBVcnN1bGlu IDx0dnJ0a28udXJzdWxpbkBpbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2k5MTUvc2Vs ZnRlc3RzL2ludGVsX2xyYy5jIHwgNDAgKysrKysrKysrKysrKysrKysrKystLQogMSBmaWxlIGNo YW5nZWQsIDM3IGluc2VydGlvbnMoKyksIDMgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJp dmVycy9ncHUvZHJtL2k5MTUvc2VsZnRlc3RzL2ludGVsX2xyYy5jIGIvZHJpdmVycy9ncHUvZHJt L2k5MTUvc2VsZnRlc3RzL2ludGVsX2xyYy5jCmluZGV4IGQ2MTUyMGVhMDNjMS4uNDIwNjhlZDVl ZWMwIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9zZWxmdGVzdHMvaW50ZWxfbHJj LmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvc2VsZnRlc3RzL2ludGVsX2xyYy5jCkBAIC02 MTUsMTQgKzYxNSwzMyBAQCBzdGF0aWMgaW50IGxpdmVfY2hhaW5fcHJlZW1wdCh2b2lkICphcmcp CiAJCXN0cnVjdCBpOTE1X3NjaGVkX2F0dHIgYXR0ciA9IHsKIAkJCS5wcmlvcml0eSA9IEk5MTVf VVNFUl9QUklPUklUWShJOTE1X1BSSU9SSVRZX01BWCksCiAJCX07Ci0JCWludCBjb3VudCwgaTsK KwkJc3RydWN0IGk5MTVfcmVxdWVzdCAqcnE7CisJCWludCByaW5nX3NpemUsIGNvdW50LCBpOwog CiAJCWlmICghaW50ZWxfZW5naW5lX2hhc19wcmVlbXB0aW9uKGVuZ2luZSkpCiAJCQljb250aW51 ZTsKIAotCQlmb3JfZWFjaF9wcmltZV9udW1iZXJfZnJvbShjb3VudCwgMSwgMzIpIHsgLyogbXVz dCBmaXQgcmluZyEgKi8KLQkJCXN0cnVjdCBpOTE1X3JlcXVlc3QgKnJxOworCQlycSA9IGlndF9z cGlubmVyX2NyZWF0ZV9yZXF1ZXN0KCZsby5zcGluLAorCQkJCQkJbG8uY3R4LCBlbmdpbmUsCisJ CQkJCQlNSV9BUkJfQ0hFQ0spOworCQlpZiAoSVNfRVJSKHJxKSkKKwkJCWdvdG8gZXJyX3dlZGdl ZDsKKwkJaTkxNV9yZXF1ZXN0X2FkZChycSk7CisKKwkJcmluZ19zaXplID0gcnEtPndhX3RhaWwg LSBycS0+aGVhZDsKKwkJaWYgKHJpbmdfc2l6ZSA8IDApCisJCQlyaW5nX3NpemUgKz0gcnEtPnJp bmctPnNpemU7CisJCXJpbmdfc2l6ZSA9IHJxLT5yaW5nLT5zaXplIC8gcmluZ19zaXplOworCQlw cl9kZWJ1ZygiJXMoJXMpOiBVc2luZyBtYXhpbXVtIG9mICVkIHJlcXVlc3RzXG4iLAorCQkJIF9f ZnVuY19fLCBlbmdpbmUtPm5hbWUsIHJpbmdfc2l6ZSk7CiAKKwkJaWd0X3NwaW5uZXJfZW5kKCZs by5zcGluKTsKKwkJaWYgKGk5MTVfcmVxdWVzdF93YWl0KHJxLCBJOTE1X1dBSVRfTE9DS0VELCBI WiAvIDIpIDwgMCkgeworCQkJcHJfZXJyKCJUaW1lZCBvdXQgd2FpdGluZyB0byBmbHVzaCAlc1xu IiwgZW5naW5lLT5uYW1lKTsKKwkJCWdvdG8gZXJyX3dlZGdlZDsKKwkJfQorCisJCWZvcl9lYWNo X3ByaW1lX251bWJlcl9mcm9tKGNvdW50LCAxLCByaW5nX3NpemUpIHsKIAkJCXJxID0gaWd0X3Nw aW5uZXJfY3JlYXRlX3JlcXVlc3QoJmhpLnNwaW4sCiAJCQkJCQkJaGkuY3R4LCBlbmdpbmUsCiAJ CQkJCQkJTUlfQVJCX0NIRUNLKTsKQEAgLTY2NCw2ICs2ODMsMjEgQEAgc3RhdGljIGludCBsaXZl X2NoYWluX3ByZWVtcHQodm9pZCAqYXJnKQogCQkJCWdvdG8gZXJyX3dlZGdlZDsKIAkJCX0KIAkJ CWlndF9zcGlubmVyX2VuZCgmbG8uc3Bpbik7CisKKwkJCXJxID0gaTkxNV9yZXF1ZXN0X2FsbG9j KGVuZ2luZSwgbG8uY3R4KTsKKwkJCWlmIChJU19FUlIocnEpKQorCQkJCWdvdG8gZXJyX3dlZGdl ZDsKKwkJCWk5MTVfcmVxdWVzdF9hZGQocnEpOworCQkJaWYgKGk5MTVfcmVxdWVzdF93YWl0KHJx LCBJOTE1X1dBSVRfTE9DS0VELCBIWiAvIDUpIDwgMCkgeworCQkJCXN0cnVjdCBkcm1fcHJpbnRl ciBwID0KKwkJCQkJZHJtX2luZm9fcHJpbnRlcihpOTE1LT5kcm0uZGV2KTsKKworCQkJCXByX2Vy cigiRmFpbGVkIHRvIGZsdXNoIGxvdyBwcmlvcml0eSBjaGFpbiBvZiAlZCByZXF1ZXN0c1xuIiwK KwkJCQkgICAgICAgY291bnQpOworCQkJCWludGVsX2VuZ2luZV9kdW1wKGVuZ2luZSwgJnAsCisJ CQkJCQkgICIlc1xuIiwgZW5naW5lLT5uYW1lKTsKKwkJCQlnb3RvIGVycl93ZWRnZWQ7CisJCQl9 CiAJCX0KIAl9CiAKLS0gCjIuMjAuMQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4