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Wed, 17 Jul 2019 14:42:38 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x6HEbtWW106473; Wed, 17 Jul 2019 14:42:38 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 2tsmccf337-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 Jul 2019 14:42:38 +0000 Received: from abhmp0003.oracle.com (abhmp0003.oracle.com [141.146.116.9]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x6HEgVhQ014169; Wed, 17 Jul 2019 14:42:31 GMT Received: from [192.168.0.21] (/209.6.165.165) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 17 Jul 2019 14:42:30 +0000 Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Subject: Re: [PATCH v3 3/5] locking/qspinlock: Introduce CNA into the slow path of qspinlock From: Alex Kogan In-Reply-To: <20190717074435.GU3419@hirez.programming.kicks-ass.net> Date: Wed, 17 Jul 2019 10:42:26 -0400 Message-Id: <779FC7D4-67CE-4D22-8154-FC108479935F@oracle.com> References: <20190715192536.104548-1-alex.kogan@oracle.com> <20190715192536.104548-4-alex.kogan@oracle.com> <9fa54e98-0b9b-0931-db32-c6bd6ccfe75b@redhat.com> <20190717074435.GU3419@hirez.programming.kicks-ass.net> To: Peter Zijlstra X-Mailer: Apple Mail (2.3259) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9320 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=789 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907170172 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9320 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=838 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907170172 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190717_074311_642519_5F544575 X-CRM114-Status: GOOD ( 10.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, guohanjun@huawei.com, arnd@arndb.de, dave.dice@oracle.com, jglauber@marvell.com, x86@kernel.org, will.deacon@arm.com, linux@armlinux.org.uk, steven.sistare@oracle.com, linux-kernel@vger.kernel.org, rahul.x.yadav@oracle.com, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, Waiman Long , tglx@linutronix.de, daniel.m.jordan@oracle.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Cj4+ICAqICAgIG1jc19ub2RlCj4+ICAqICAgKy0tLS0tLS0tKyAgICAgICstLS0tKyAgICAgICAg ICstLS0tKwo+PiAgKiAgIHwgbmV4dCAgIHwgLS0tPiB8bmV4dHwgLT4gLi4uICB8bmV4dHwgLT4g TlVMTCAgW01haW4gcXVldWVdCj4+ICAqICAgfCBsb2NrZWQgfCAtKyAgICstLS0tKyAgICAgICAg ICstLS0tKwo+PiAgKiAgICstLS0tLS0tLSsgIHwKPj4gICogICAgICAgICAgICAgICB8ICAgKy0t LS0tLS0tLSsgICAgICAgICArLS0tLSsKPj4gICogICAgICAgICAgICAgICArLT4gfG1jczo6bmV4 dHwgLT4gLi4uICB8bmV4dHwgLT4gTlVMTCAgICAgW1NlY29uZGFyeSBxdWV1ZV0KPj4gKiAgICAg ICAgICAgICAgICAgICB8Y25hOjp0YWlsfCAtKyAgICAgICstLS0tKwo+PiAgKiAgICAgICAgICAg ICAgICAgICArLS0tLS0tLS0tKyAgfCAgICAgICAgXgo+PiAqICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICArLS0tLS0tLS0rCj4+ICAqCj4+ICAqIE4uQi4gbG9ja2VkID0gMSBpZiBzZWNv bmRhcnkgcXVldWUgaXMgYWJzZW50Lgo+PiAgKi8KCgpJIHdvdWxkIGNoYW5nZSBtY3Nfbm9kZSB0 byBjbmFfbm9kZSwgbmV4dCB0byBtY3M6Om5leHQgYW5kIGxvY2tlZCB0byBtY3M6OmxvY2tlZApp biB0aGUgdmVyeSBmaXJzdCBub2RlLiBPdGhlciB0aGFuIHRoYXQsIHRoaXMgaXMgZ3JlYXQuIFRo YW5rcywgUGV0ZXIgYW5kIExvbmdtYW4hCgpJIHNob3VsZCBwcm9iYWJseSBzdGljayB0aGlzIGdy YXBoaWMgaW4gdGhlIGNvbW1lbnQgYXQgdGhlIHRvcCBvZiB0aGUgZmlsZSwgCmluc3RlYWQgb2Yg YSBjb21tZW50IHRvIGZpbmRfc3VjY2Vzc29yKCkgKG9yIHdoYXRldmVyIHRoaXMgZnVuY3Rpb24g ZW5kcyB1cCAKYmVpbmcgY2FsbGVkKS4KCuKAlCBBbGV4CgoKCl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0 CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFk ZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK