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Tue, 15 Dec 2020 18:13:39 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0BFI12Qw107153; Tue, 15 Dec 2020 18:13:38 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3020.oracle.com with ESMTP id 35e6eqtd4c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 15 Dec 2020 18:13:38 +0000 Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0BFIDNYR023406; Tue, 15 Dec 2020 18:13:24 GMT Received: from localhost.localdomain (/10.159.246.52) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 15 Dec 2020 10:13:23 -0800 Subject: Re: [PATCH -tip 23/32] sched: Add a per-thread core scheduling interface To: Joel Fernandes , chris hyser Cc: Nishanth Aravamudan , Julien Desfossez , Peter Zijlstra , Tim Chen , Vineeth Pillai , Aaron Lu , Aubrey Li , tglx@linutronix.de, linux-kernel@vger.kernel.org, mingo@kernel.org, fweisbec@gmail.com, keescook@chromium.org, kerrnel@google.com, Phil Auld , Valentin Schneider , Mel Gorman , Pawan Gupta , Paolo Bonzini , vineeth@bitbyteword.org, Chen Yu , Christian Brauner , Agata Gruza , Antonio Gomez Iglesias , graf@amazon.com, konrad.wilk@oracle.com, dfaggioli@suse.com, pjt@google.com, rostedt@goodmis.org, derkling@google.com, benbjiang@tencent.com, Alexandre Chartre , James.Bottomley@hansenpartnership.com, OWeisse@umich.edu, Junaid Shahid , jsbarnes@google.com, Ben Segall , Josh Don , Hao Luo , Tom Lendacky , Aubrey Li , Tim Chen References: <20201117232003.3580179-1-joel@joelfernandes.org> <20201117232003.3580179-24-joel@joelfernandes.org> <20201202214717.GA27531@chyser-vm-1.appad1iad.osdevelopmeniad.oraclevcn.com> <20201206173418.GC201514@google.com> <20201209185203.GC6876@chyser-vm-1.appad1iad.osdevelopmeniad.oraclevcn.com> <16a390e4-b44d-b0eb-1df6-6e56d78d009f@oracle.com> <20201214232541.GF201514@google.com> From: Dhaval Giani Message-ID: <796ec1e5-15ef-34da-5716-0ec19432deba@oracle.com> Date: Tue, 15 Dec 2020 10:13:20 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20201214232541.GF201514@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9836 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 mlxscore=0 phishscore=0 bulkscore=0 suspectscore=0 malwarescore=0 mlxlogscore=999 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012150120 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9836 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 mlxlogscore=999 impostorscore=0 lowpriorityscore=0 clxscore=1011 spamscore=0 malwarescore=0 priorityscore=1501 phishscore=0 mlxscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012150120 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/14/20 3:25 PM, Joel Fernandes wrote: >> No problem. That was there primarily for debugging. > Ok. I squashed Josh's changes into this patch and several of my fixups. So > there'll be 3 patches: > 1. CGroup + prctl (single patch as it is hell to split it) Please don't do that. I am not sure we have thought the cgroup interface through (looking at all the discussions). IMHO, it would be better for us to get a simpler interface (prctl) right and then once we learn the lessons using it, apply it for the cgroup interface. I think we all agree we don't want to maintain a messy interface forever. Dhaval