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Bottomley" , Keoseong Park , "Martin K. Petersen" , Mauro Carvalho Chehab , Sohaib Mohamed , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Subject: Re: [PATCH v8] ufs: core: print UFSHCD capabilities in controller's sysfs node From: "Martin K. Petersen" Organization: Oracle Corporation Message-ID: References: <20220829081845.v8.1.Ibf9efc9be50783eeee55befa2270b7d38552354c@changeid> Date: Tue, 06 Sep 2022 22:19:11 -0400 In-Reply-To: <20220829081845.v8.1.Ibf9efc9be50783eeee55befa2270b7d38552354c@changeid> (Daniil Lunev's message of "Mon, 29 Aug 2022 08:18:58 +1000") MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-06_11,2022-09-06_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 mlxscore=0 adultscore=0 malwarescore=0 mlxlogscore=934 bulkscore=0 suspectscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209070008 X-Proofpoint-ORIG-GUID: tEkZaeEK-d1SCqXFkqVz26S2tsypn8pO X-Proofpoint-GUID: tEkZaeEK-d1SCqXFkqVz26S2tsypn8pO X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Daniil, > Userspace may want to manually control when the data should go into > WriteBooster buffer. The control happens via "wb_on" node, but > presently, there is no simple way to check if WriteBooster is > supported and enabled. This change exposes the Write Booster and Clock > Scaling capabilities to be able to determin if the Write Booster is > available and if its manual control is blocked by Clock Scaling > mechanism. Applied to 6.1/scsi-staging, thanks! -- Martin K. Petersen Oracle Linux Engineering