From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arun Siluvery Subject: Re: [PATCH 2/2] drm/i915/lrc: Prevent preemption when lite-restore is disabled Date: Thu, 10 Sep 2015 18:37:17 +0100 Message-ID: <55F1BFCD.902@linux.intel.com> References: <1441367955-22006-1-git-send-email-michel.thierry@intel.com> <1441367955-22006-2-git-send-email-michel.thierry@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id BA1226E038 for ; Thu, 10 Sep 2015 10:37:19 -0700 (PDT) In-Reply-To: <1441367955-22006-2-git-send-email-michel.thierry@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Michel Thierry , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gMDQvMDkvMjAxNSAxMjo1OSwgTWljaGVsIFRoaWVycnkgd3JvdGU6Cj4gV2hlbiBXYUVuYWJs ZUZvcmNlUmVzdG9yZUluQ3R4dERlc2NGb3JWQ1MgaXMgcmVxdWlyZWQsIGl0IGlzIG9ubHkKPiBz YWZlIHRvIHNlbmQgbmV3IGNvbnRleHRzIGlmIHRoZSBsYXN0IHJlcG9ydGVkIGV2ZW50IGlzICJh Y3RpdmUgdG8KPiBpZGxlIi4gT3RoZXJ3aXNlIHRoZSBzYW1lIGNvbnRleHQgY2FuIGZ1bGx5IHBy ZWVtcHQgaXRzZWxmIGJlY2F1c2UKPiBsaXRlLXJlc3RvcmUgaXMgZGlzYWJsZWQuCj4KPiBUZXN0 Y2FzZTogaWd0L2dlbV9jb25jdXJyZW50X2JsaXQKPiBSZXBvcnRlZC1ieTogRGFuaWVsZSBDZXJh b2xvIFNwdXJpbyA8ZGFuaWVsZS5jZXJhb2xvc3B1cmlvQGludGVsLmNvbT4KPiBTaWduZWQtb2Zm LWJ5OiBNaWNoZWwgVGhpZXJyeSA8bWljaGVsLnRoaWVycnlAaW50ZWwuY29tPgo+IC0tLQo+ICAg ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMgfCAyNCArKysrKysrKysrKysrKysrKyst LS0tLS0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAxOCBpbnNlcnRpb25zKCspLCA2IGRlbGV0aW9ucygt KQo+Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jIGIvZHJp dmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMKPiBpbmRleCBkOGI2MDVmLi5jM2ZjYTRiIDEw MDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4gKysrIGIvZHJp dmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfbHJjLmMKPiBAQCAtMjc3LDEwICsyNzcsMTggQEAgdTMy IGludGVsX2V4ZWNsaXN0c19jdHhfaWQoc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKmN0eF9v YmopCj4gICAJcmV0dXJuIGxyY2EgPj4gMTI7Cj4gICB9Cj4KPiArc3RhdGljIGJvb2wgZGlzYWJs ZV9saXRlX3Jlc3RvcmVfd2Eoc3RydWN0IGludGVsX2VuZ2luZV9jcyAqcmluZykKPiArewo+ICsJ c3RydWN0IGRybV9kZXZpY2UgKmRldiA9IHJpbmctPmRldjsKPiArCj4gKwlyZXR1cm4gKChJU19T S1lMQUtFKGRldikgJiYgSU5URUxfUkVWSUQoZGV2KSA8PSBTS0xfUkVWSURfQjApIHx8Cj4gKwkJ KElTX0JST1hUT04oZGV2KSAmJiBJTlRFTF9SRVZJRChkZXYpID09IEJYVF9SRVZJRF9BMCkpICYm Cj4gKwkgICAgICAgKHJpbmctPmlkID09IFZDUyB8fCByaW5nLT5pZCA9PSBWQ1MyKTsKPiArfQo+ ICsKPiAgIHVpbnQ2NF90IGludGVsX2xyX2NvbnRleHRfZGVzY3JpcHRvcihzdHJ1Y3QgaW50ZWxf Y29udGV4dCAqY3R4LAo+ICAgCQkJCSAgICAgc3RydWN0IGludGVsX2VuZ2luZV9jcyAqcmluZykK PiAgIHsKPiAtCXN0cnVjdCBkcm1fZGV2aWNlICpkZXYgPSByaW5nLT5kZXY7Cj4gICAJc3RydWN0 IGRybV9pOTE1X2dlbV9vYmplY3QgKmN0eF9vYmogPSBjdHgtPmVuZ2luZVtyaW5nLT5pZF0uc3Rh dGU7Cj4gICAJdWludDY0X3QgZGVzYzsKPiAgIAl1aW50NjRfdCBscmNhID0gaTkxNV9nZW1fb2Jq X2dndHRfb2Zmc2V0KGN0eF9vYmopICsKPiBAQCAtMzAyLDkgKzMxMCw3IEBAIHVpbnQ2NF90IGlu dGVsX2xyX2NvbnRleHRfZGVzY3JpcHRvcihzdHJ1Y3QgaW50ZWxfY29udGV4dCAqY3R4LAo+Cj4g ICAJLyogV2FFbmFibGVGb3JjZVJlc3RvcmVJbkN0eHREZXNjRm9yVkNTOnNrbCAqLwo+ICAgCS8q IFdhRW5hYmxlRm9yY2VSZXN0b3JlSW5DdHh0RGVzY0ZvclZDUzpieHQgKi8KPiAtCWlmICgoKElT X1NLWUxBS0UoZGV2KSAmJiBJTlRFTF9SRVZJRChkZXYpIDw9IFNLTF9SRVZJRF9CMCkgfHwKPiAt CSAgICAgKElTX0JST1hUT04oZGV2KSAmJiBJTlRFTF9SRVZJRChkZXYpID09IEJYVF9SRVZJRF9B MCkpICYmCj4gLQkgICAgKHJpbmctPmlkID09IFZDUyB8fCByaW5nLT5pZCA9PSBWQ1MyKSkKPiAr CWlmIChkaXNhYmxlX2xpdGVfcmVzdG9yZV93YShyaW5nKSkKPiAgIAkJZGVzYyB8PSBHRU44X0NU WF9GT1JDRV9SRVNUT1JFOwo+Cj4gICAJcmV0dXJuIGRlc2M7Cj4gQEAgLTQ5NSw3ICs1MDEsNyBA QCB2b2lkIGludGVsX2xyY19pcnFfaGFuZGxlcihzdHJ1Y3QgaW50ZWxfZW5naW5lX2NzICpyaW5n KQo+ICAgCXUzMiBzdGF0dXNfcG9pbnRlcjsKPiAgIAl1OCByZWFkX3BvaW50ZXI7Cj4gICAJdTgg d3JpdGVfcG9pbnRlcjsKPiAtCXUzMiBzdGF0dXM7Cj4gKwl1MzIgc3RhdHVzID0gMDsKPiAgIAl1 MzIgc3RhdHVzX2lkOwo+ICAgCXUzMiBzdWJtaXRfY29udGV4dHMgPSAwOwo+Cj4gQEAgLTUzMyw4 ICs1MzksMTQgQEAgdm9pZCBpbnRlbF9scmNfaXJxX2hhbmRsZXIoc3RydWN0IGludGVsX2VuZ2lu ZV9jcyAqcmluZykKPiAgIAkJfQo+ICAgCX0KPgo+IC0JaWYgKHN1Ym1pdF9jb250ZXh0cyAhPSAw KQo+ICsJaWYgKGRpc2FibGVfbGl0ZV9yZXN0b3JlX3dhKHJpbmcpKSB7Cj4gKwkJLyogUHJldmVu dCBhIGN0eCB0byBwcmVlbXB0IGl0c2VsZiAqLwo+ICsJCWlmICgoc3RhdHVzICYgR0VOOF9DVFhf U1RBVFVTX0FDVElWRV9JRExFKSAmJgo+ICsJCSAgICAoc3VibWl0X2NvbnRleHRzICE9IDApKQo+ ICsJCQlleGVjbGlzdHNfY29udGV4dF91bnF1ZXVlKHJpbmcpOwo+ICsJfSBlbHNlIGlmIChzdWJt aXRfY29udGV4dHMgIT0gMCkgewo+ICAgCQlleGVjbGlzdHNfY29udGV4dF91bnF1ZXVlKHJpbmcp Owo+ICsJfQo+Cj4gICAJc3Bpbl91bmxvY2soJnJpbmctPmV4ZWNsaXN0X2xvY2spOwo+Cj4KCk5l ZWQgY2hhbmdlcyBpZiB3ZSBkZWNpZGUgdG8gZHJvcCBTS0wsIG90aGVyd2lzZSBhbHNvIGl0IGxv b2tzIGdvb2QgdG8gbWUsClJldmlld2VkLWJ5OiBBcnVuIFNpbHV2ZXJ5IDxhcnVuLnNpbHV2ZXJ5 QGxpbnV4LmludGVsLmNvbT4KCnJlZ2FyZHMKQXJ1bgoKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhA bGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1h bi9saXN0aW5mby9pbnRlbC1nZngK