From mboxrd@z Thu Jan 1 00:00:00 1970 From: jeff.mcgee@intel.com Subject: [RFC 5/8] drm/i915: Consider preemption when finding the active request Date: Fri, 16 Mar 2018 11:31:02 -0700 Message-ID: <20180316183105.16027-6-jeff.mcgee@intel.com> References: <20180316183105.16027-1-jeff.mcgee@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id A59A86E0DB for ; Fri, 16 Mar 2018 18:45:41 +0000 (UTC) In-Reply-To: <20180316183105.16027-1-jeff.mcgee@intel.com> 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: ben@bwidawsk.net, kalyan.kondapally@intel.com List-Id: intel-gfx@lists.freedesktop.org RnJvbTogSmVmZiBNY0dlZSA8amVmZi5tY2dlZUBpbnRlbC5jb20+CgpUaGUgYWN0aXZlIHJlcXVl c3QgaXMgZm91bmQgYnkgc2Nhbm5pbmcgdGhlIGVuZ2luZSB0aW1lbGluZSBmb3IgdGhlCnJlcXVl c3QgdGhhdCBmb2xsb3dzIHRoZSBsYXN0IGNvbXBsZXRlZCByZXF1ZXN0LiBUaGF0IG1ldGhvZCBp cyBhY2N1cmF0ZQppZiB0aGVyZSBpcyBubyBwcmVlbXB0aW9uIGluIHByb2dyZXNzLCBiZWNhdXNl IHRoZSBlbmdpbmUgd2lsbCBjZXJ0YWlubHkKaGF2ZSBzdGFydGVkIHRoYXQgcmVxdWVzdC4gSWYg dGhlcmUgaXMgYSBwcmVlbXB0aW9uIGluIHByb2dyZXNzLCBpdCBjb3VsZApoYXZlIGNvbXBsZXRl ZCBsZWF2aW5nIHRoZSBlbmdpbmUgaWRsZS4gSW4gdGhpcyBjYXNlIHRoZSByZXF1ZXN0IHdlCmlk ZW50aWZpZWQgd2l0aCB0aGUgYWJvdmUgbWV0aG9kIGlzIG5vdCBhY3RpdmUgYW5kIG1heSBub3Qg ZXZlbiBoYXZlIGJlZW4Kc3RhcnRlZC4gV2UgbXVzdCBjaGVjayBmb3IgdGhpcyBjb25kaXRpb24g dG8gYXZvaWQgZmluZ2VyaW5nIGFuIGlubm9jZW50CnJlcXVlc3QgZHVyaW5nIHJlc2V0LgoKVGhp cyBwYXRjaCBpcyByZXF1aXJlZCB0byBzdXBwb3J0IHRoZSBmb3JjZSBwcmVlbXB0aW9uIGZlYXR1 cmUuCgpUZXN0OiBSdW4gSUdUIGdlbV9leGVjX2ZwcmVlbXB0IHJlcGVhdGVkbHkuCkNoYW5nZS1J ZDogSTYzYTlmNjQ0NDZlMjRkNGVlMzZiNGFmMzI4NTQ2OTliZGEwMDZkZGQKU2lnbmVkLW9mZi1i eTogSmVmZiBNY0dlZSA8amVmZi5tY2dlZUBpbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJt L2k5MTUvaTkxNV9nZW0uYyB8IDQ5ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KystLS0tCiAxIGZpbGUgY2hhbmdlZCwgNDUgaW5zZXJ0aW9ucygrKSwgNCBkZWxldGlvbnMoLSkK CmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jIGIvZHJpdmVycy9n cHUvZHJtL2k5MTUvaTkxNV9nZW0uYwppbmRleCBlMjk2MWUzOTEzYjguLjk3ODBkOTAyNmNlNiAx MDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYworKysgYi9kcml2ZXJz L2dwdS9kcm0vaTkxNS9pOTE1X2dlbS5jCkBAIC0yNzM5LDkgKzI3MzksOSBAQCBzdGF0aWMgdm9p ZCBpOTE1X2dlbV9jb250ZXh0X21hcmtfaW5ub2NlbnQoc3RydWN0IGk5MTVfZ2VtX2NvbnRleHQg KmN0eCkKIH0KIAogc3RydWN0IGRybV9pOTE1X2dlbV9yZXF1ZXN0ICoKLWk5MTVfZ2VtX2ZpbmRf YWN0aXZlX3JlcXVlc3Qoc3RydWN0IGludGVsX2VuZ2luZV9jcyAqZW5naW5lKQoraTkxNV9nZW1f ZmluZF9wZW5kaW5nX3JlcXVlc3Qoc3RydWN0IGludGVsX2VuZ2luZV9jcyAqZW5naW5lKQogewot CXN0cnVjdCBkcm1faTkxNV9nZW1fcmVxdWVzdCAqcmVxdWVzdCwgKmFjdGl2ZSA9IE5VTEw7CisJ c3RydWN0IGRybV9pOTE1X2dlbV9yZXF1ZXN0ICpyZXF1ZXN0LCAqcGVuZGluZyA9IE5VTEw7CiAJ dW5zaWduZWQgbG9uZyBmbGFnczsKIAogCS8qIFdlIGFyZSBjYWxsZWQgYnkgdGhlIGVycm9yIGNh cHR1cmUgYW5kIHJlc2V0IGF0IGEgcmFuZG9tCkBAIC0yNzYyLDEyICsyNzYyLDUzIEBAIGk5MTVf Z2VtX2ZpbmRfYWN0aXZlX3JlcXVlc3Qoc3RydWN0IGludGVsX2VuZ2luZV9jcyAqZW5naW5lKQog CQlHRU1fQlVHX09OKHRlc3RfYml0KERNQV9GRU5DRV9GTEFHX1NJR05BTEVEX0JJVCwKIAkJCQkg ICAgJnJlcXVlc3QtPmZlbmNlLmZsYWdzKSk7CiAKLQkJYWN0aXZlID0gcmVxdWVzdDsKKwkJcGVu ZGluZyA9IHJlcXVlc3Q7CiAJCWJyZWFrOwogCX0KIAlzcGluX3VubG9ja19pcnFyZXN0b3JlKCZl bmdpbmUtPnRpbWVsaW5lLT5sb2NrLCBmbGFncyk7CiAKLQlyZXR1cm4gYWN0aXZlOworCXJldHVy biBwZW5kaW5nOworfQorCitzdHJ1Y3QgZHJtX2k5MTVfZ2VtX3JlcXVlc3QgKgoraTkxNV9nZW1f ZmluZF9hY3RpdmVfcmVxdWVzdChzdHJ1Y3QgaW50ZWxfZW5naW5lX2NzICplbmdpbmUpCit7CisJ c3RydWN0IGludGVsX2VuZ2luZV9leGVjbGlzdHMgKiBjb25zdCBleGVjbGlzdHMgPSAmZW5naW5l LT5leGVjbGlzdHM7CisJc3RydWN0IGRybV9pOTE1X2dlbV9yZXF1ZXN0ICpyZXF1ZXN0OworCisJ LyogVGhlIHBlbmRpbmcgcmVxdWVzdCBpcyBhY3RpdmUgaWYgbm8gcHJlZW1wdGlvbiBpcyBpbiBw cm9ncmVzcyAqLworCWlmICghZXhlY2xpc3RzX2lzX2FjdGl2ZShleGVjbGlzdHMsIEVYRUNMSVNU U19BQ1RJVkVfUFJFRU1QVCkpCisJCXJldHVybiBpOTE1X2dlbV9maW5kX3BlbmRpbmdfcmVxdWVz dChlbmdpbmUpOworCisJLyogUHJlZW1wdGlvbiBoYXMgZmluaXNoZWQuIEVuZ2luZSBpZGxlLiAq LworCWlmIChpbnRlbF9lbmdpbmVfcHJlZW1wdF9maW5pc2hlZChlbmdpbmUpKQorCQlyZXR1cm4g TlVMTDsKKworCXJlcXVlc3QgPSBpOTE1X2dlbV9maW5kX3BlbmRpbmdfcmVxdWVzdChlbmdpbmUp OworCisJLyogUHJlZW1wdGlvbiBoYXMgZmx1c2hlZCBhbGwgcmVxdWVzdHMgb2ZmIHRoZSBlbmdp bmUuIEVuZ2luZSBpZGxlLiAqLworCWlmICghcmVxdWVzdCkKKwkJcmV0dXJuIE5VTEw7CisKKwkv KiBUaGUgcGVuZGluZyByZXF1ZXN0IGxpa2VseSBpcyBhY3RpdmUgYW5kIGJsb2NraW5nIHRoZSBp bi1wcm9ncmVzcworCSAqIHByZWVtcHRpb24uIEJ1dCB0aGVyZSBpcyBhIHJhY2UgaW4gb3VyIHBy ZXZpb3VzIGNoZWNrcy4gVGhlIHJlcXVlc3QKKwkgKiB0aGF0IHdhcyBhY3R1YWxseSBibG9ja2lu ZyBwcmVlbXB0aW9uIGNvdWxkIGhhdmUgY29tcGxldGVkIChhIGJhdGNoLQorCSAqIGJvdW5kYXJ5 IHByZWVtcHRpb24pIHN1Y2ggdGhhdCB0aGUgZW5naW5lIGlzIGlkbGUgYW5kIHRoZSBwZW5kaW5n CisJICogcmVxdWVzdCB3ZSBoYXZlIGlkZW50aWZpZWQgd2FzIHRoZSBuZXh0IGluIGxpbmUuIFdl IG11c3Qgd2FpdCBmb3IKKwkgKiBhdCBsZWFzdCBhcyBsb25nIGFzIGl0IHdvdWxkIHRha2UgZm9y IHRoZSBwcmVlbXB0LXRvLWlkbGUgY29udGV4dAorCSAqIHRvIG1hcmsgdGhlIHByZWVtcHRpb24g ZG9uZSB0byB2ZXJpZnkgdGhpcy4gV2UgdXNlIDUwMCB1c2VjcyB0bworCSAqIGFjY291bnQgZm9y IGEgd29yc3QgY2FzZSBkZWxheSBmcm9tIHRoZSBzZXFubyB3cml0ZSBvZiB0aGUKKwkgKiBjb21w bGV0aW5nIHJlcXVlc3QgYW5kIHRoZSBwcmVlbXB0IGZpbmlzaGVkIHdyaXRlLgorCSAqLworCWlm ICghX3dhaXRfZm9yX2V4YWN0KGludGVsX2VuZ2luZV9wcmVlbXB0X2ZpbmlzaGVkKGVuZ2luZSks IDUwMCwgMTAsIDUwKSkKKwkJcmV0dXJuIE5VTEw7CisKKwkvKgorCSAqIFdlIGRpZG4ndCBzZWUg dGhlIHByZWVtcHRpb24gZG9uZSBhZnRlciBhIHN1ZmZpY2llbnQgd2FpdC4gVGh1cyB0aGUKKwkg KiBwZW5kaW5nIHJlcXVlc3Qgd2Ugc2FtcGxlZCBhYm92ZSB3YXMgaW4gZmFjdCBhY3RpdmUgYW5k IGJsb2NraW5nCisJICogdGhlIHByZWVtcHRpb24uCisJICovCisJcmV0dXJuIHJlcXVlc3Q7CiB9 CiAKIHN0YXRpYyBib29sIGVuZ2luZV9zdGFsbGVkKHN0cnVjdCBpbnRlbF9lbmdpbmVfY3MgKmVu Z2luZSkKLS0gCjIuMTYuMgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0 b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50 ZWwtZ2Z4Cg==