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Thu, 16 Jul 2020 16:45:24 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20200716164524epsmtrp1d758bdc50442e6a5c771eab7205ca0c2~iSWbXQRd71958019580epsmtrp1a; Thu, 16 Jul 2020 16:45:24 +0000 (GMT) X-AuditID: b6c32a49-a29ff700000024fb-4b-5f1103d84f22 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 12.62.08303.324801F5; Fri, 17 Jul 2020 01:45:23 +0900 (KST) Received: from alimakhtar02 (unknown [107.108.234.165]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20200716164519epsmtip2489569e9c4cb5042564c431e03c45d00~iSWXLwRzG1317113171epsmtip2b; Thu, 16 Jul 2020 16:45:19 +0000 (GMT) From: "Alim Akhtar" To: "'Avi Shchislowski'" , "'Bart Van Assche'" , , "'Avri Altman'" , , , , , , , Cc: , , "'Sang-yoon Oh'" , "'Sung-Jun Park'" , "'yongmyung lee'" , "'Jinyoung CHOI'" , "'Adel Choi'" , "'BoRam Shin'" In-Reply-To: Subject: RE: [PATCH v6 0/5] scsi: ufs: Add Host Performance Booster Support Date: Thu, 16 Jul 2020 22:15:17 +0530 Message-ID: <001301d65b90$8012c3e0$80384ba0$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQNTAwbo7R95v2Jv+B+oDyvdEhuZkAJ3qsxbAEskZzgCs8hfhQGhYIDUpdhZ7/A= Content-Language: en-in X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrMKsWRmVeSWpSXmKPExsWy7bCmuu4NZsF4g2lnLSw23n3FarG37QS7 xdddC5gtXv68ymZx8GEni8Xh2+/YLaZ9+Mls8Wn9MlaLVQ/CLXr7t7JZLLqxjcni8q45bBbd 13ewWSw//o/JYsLLJSwWS7feZLTonL6GxeJDT53FooW7WRyEPS5f8fa43NfL5LF4z0smjwmL DjB6tJzcz+LxfX0Hm8fHp7dYPPq2rGL0+LxJzqP9QDdTAFcUl01Kak5mWWqRvl0CV8bjhuCC B/IVbZ//MzYwNkh1MXJySAiYSPw9Npmli5GLQ0hgN6PEyePvmCGcT4wSs6d+Y4NwPjNKdD++ xgrT8ukMTGIXo0Tb3vtQ/W8YJY4tW8wMUsUmoCuxY3EbWJWIwG0miY9ze9hBHGaBC0wS977f BpvFKRArsWb9JyYQW1jAW+L32xlsIDaLgKrE5pvHwOK8ApYS7x9dZIGwBSVOznwCZjMLaEss W/iaGeImBYmfT5eBzRQR8JO4tvoaI0SNuMTRnz1gH0kI9HNKTN+xAKrBRWL7nE9sELawxKvj W9ghbCmJl/1tQDYHkJ0t0bPLGCJcI7F03jEWCNte4sCVOSwgJcwCmhLrd+lDhGUlpp5axwSx lk+i9/cTJog4r8SOeTC2qkTzu6tQY6QlJnZ3s05gVJqF5LNZSD6bheSDWQjbFjCyrGKUTC0o zk1PLTYtMMxLLdcrTswtLs1L10vOz93ECE6XWp47GO8++KB3iJGJg/EQowQHs5II7/yXAvFC vCmJlVWpRfnxRaU5qcWHGKU5WJTEeZV+nIkTEkhPLEnNTk0tSC2CyTJxcEo1MGWJnSlU0l2+ W3ORfHKfoSf/krfzn0S4SK7l+vv1l7bRCj65ffalFsvb3x885nlpfqCavaBHeM+T/FWZc3Om 7nm9bqHo+a2i8TX5Br9SmExfFf8KEHx67IHYESW5pKD+j1lbFp+vmdfSo8ClHl6SLHu9bQpX o7FKkuFDB4OlIldXlYRmX+SuK57k1mWqqfDDJ+jETA3l1DrfBRbK7Pq9zN9Tex4Ly9RMmNxi wcJQKX4jbOujtPAyoy+fDBetKrT7F3ayL1jffeakcIYEbe/5MlfL/E7GqFs//Ht1r9qy11qv lAvy2JOaJj2yjVuz9F4Qz9cIPV/1U9oP71768/3gyW8fZvzlPfRghvJDdb06JZbijERDLeai 4kQASRTo4wYEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrKIsWRmVeSWpSXmKPExsWy7bCSvK5Ki0C8QZumxca7r1gt9radYLf4 umsBs8XLn1fZLA4+7GSxOHz7HbvFtA8/mS0+rV/GarHqQbhFb/9WNotFN7YxWVzeNYfNovv6 DjaL5cf/MVlMeLmExWLp1puMFp3T17BYfOips1i0cDeLg7DH5SveHpf7epk8Fu95yeQxYdEB Ro+Wk/tZPL6v72Dz+Pj0FotH35ZVjB6fN8l5tB/oZgrgiuKySUnNySxLLdK3S+DKmN9mUbBI vmLB57usDYzrJLsYOTkkBEwkPp35xgZiCwnsYJSY8jECIi4tcX3jBHYIW1hi5b/nQDYXUM0r Rom/+5ezgCTYBHQldixuYwNJiAg8Z5I4sewLE4jDLHCNSeLPx89sEC1XmST+LfzECNLCKRAr sWb9JyYQW1jAW+L32xlgu1kEVCU23zwGFucVsJR4/+giC4QtKHFy5hMwm1lAW6L3YSsjjL1s 4WtmiPsUJH4+XcYKYosI+ElcW30NqkZc4ujPHuYJjMKzkIyahWTULCSjZiFpWcDIsopRMrWg ODc9t9iwwCgvtVyvODG3uDQvXS85P3cTIzjmtbR2MO5Z9UHvECMTB+MhRgkOZiURXh4u3ngh 3pTEyqrUovz4otKc1OJDjNIcLErivF9nLYwTEkhPLEnNTk0tSC2CyTJxcEo1MNXKpPzIFp9q fvukSOfMmGyt7k3XbzpynX7JOevw9Hdb1+/+qc6mJvv03h+V8Elrfl86U5Uxo2nmNv5ZigV9 mkIbu7/eCXzzR+q61JmaR1MLvDS+ZcpMsC17U76Zv3BqC7OftePKxNhziQeefpVlV17x2dj5 NPN2SfdjtzNEJ3awhv5p2vugc3E4z+/ca7dMKq+brBS89T/+wmr/e1vlW7uvTfsTzlilNe+x vBJzl/f/NxrrjMLuXb+s+z085QLfypSeXRFHll6ZM3/3NeO3E77I5u759JK30OWs2Qkbu39T Jk1duimm1Mx5R06iS11G6vvDTjpRjZEOm6Yt1vJMYn5jHJQ4vU9YOPX8947rjlOUWIozEg21 mIuKEwFA8W5maAMAAA== X-CMS-MailID: 20200716164524epcas5p310db2c23bbc82adf365112ae673a5209 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P X-CMS-RootMailID: 20200713103423epcms2p8442ee7cc22395e4a4cedf224f95c45e8 References: <963815509.21594636682161.JavaMail.epsvc@epcpadp2> <4174fcf4-73ec-8e3f-90a5-1e7584e3e2d0@acm.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Avi, > -----Original Message----- > From: Avi Shchislowski > Sent: 16 July 2020 15:31 > To: Bart Van Assche ; daejun7.park=40samsung.com; A= vri > Altman ; jejb=40linux.ibm.com; > martin.petersen=40oracle.com; asutoshd=40codeaurora.org; > beanhuo=40micron.com; stanley.chu=40mediatek.com; cang=40codeaurora.org; > tomas.winkler=40intel.com; ALIM AKHTAR > Cc: linux-scsi=40vger.kernel.org; linux-kernel=40vger.kernel.org; Sang-yo= on Oh > ; Sung-Jun Park > ; yongmyung lee > ; Jinyoung CHOI ; > Adel Choi ; BoRam Shin > > Subject: RE: =5BPATCH v6 0/5=5D scsi: ufs: Add Host Performance Booster S= upport >=20 >=20 >=20 > > -----Original Message----- > > From: Bart Van Assche > > Sent: Thursday, July 16, 2020 4:42 AM > > To: Avi Shchislowski ; > > daejun7.park=40samsung.com; Avri Altman ; > > jejb=40linux.ibm.com; martin.petersen=40oracle.com; > > asutoshd=40codeaurora.org; beanhuo=40micron.com; > stanley.chu=40mediatek.com; > > cang=40codeaurora.org; tomas.winkler=40intel.com; ALIM AKHTAR > > > > Cc: linux-scsi=40vger.kernel.org; linux-kernel=40vger.kernel.org; > > Sang-yoon Oh ; Sung-Jun Park > > ; yongmyung lee > > ; Jinyoung CHOI young.choi=40samsung.com>; > > Adel Choi ; BoRam Shin > > > Subject: Re: =5BPATCH v6 0/5=5D scsi: ufs: Add Host Performance Booster > > Support > > > > CAUTION: This email originated from outside of Western Digital. Do not > > click on links or open attachments unless you recognize the sender and > > know that the content is safe. > > > > > > On 2020-07-15 11:34, Avi Shchislowski wrote: > > > My name is Avi Shchislowski, I am managing the WDC's Linux Host R&D > > > team > > in which Avri is a member of. > > > As the review process of HPB is progressing very constructively, we > > > are getting > > more and more requests from OEMs, Inquiring about HPB in general, and > > host control mode in particular. > > > > > > Their main concern is that HPB will make it to 5.9 merge window, but > > > the host > > control mode patches will not. > > > Thus, because of recent Google's GKI, the next Android LTS might not > > > include > > HPB with host control mode. > > > > > > Aside of those requests, initial host control mode testing are > > > showing > > promising prospective with respect of performance gain. > > > > > > What would be, in your opinion, the best policy that host control > > > mode is > > included in next Android LTS? > > > > Hi Avi, > > > > Are you perhaps referring to the HPB patch series that has already been > posted? > > Although I'm not sure of this, I think that the SCSI maintainer > > expects more > > Reviewed-by: and Tested-by: tags. Has anyone from WDC already taken > > the time to review and/or test this patch series? > > > > Thanks, > > > > Bart. >=20 > Yes, I am referring to the current proposal which I am replying to: > =5BPATCH v6 0/5=5D scsi: ufs: Add Host Performance Booster Support This p= roposal > does not contains host mode, hence our customers concern. > What would be, in your opinion, the best policy that host control mode is > included in next Android LTS assuming it will be based on kernel v5.9 ? >=20 This series has nothing to do with Host mode control, this series is target= ed for device mode control. General consensus here is to land this series a= s it is (unless someone has more review comments) and lets add/enhance what= ever need to be done for adding Host mode controls as well as other HPB2.0 = related changes. > Thanks, > Avi