From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161097AbeCAS5x (ORCPT ); Thu, 1 Mar 2018 13:57:53 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:58568 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1034092AbeCAS5u (ORCPT ); Thu, 1 Mar 2018 13:57:50 -0500 Subject: Re: [PATCH 2/3] tpm: reduce poll sleep time between send() and recv() in tpm_transmit() To: Jarkko Sakkinen Cc: linux-integrity@vger.kernel.org, zohar@linux.vnet.ibm.com, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, peterhuewe@gmx.de, tpmdd@selhorst.net, jgunthorpe@obsidianresearch.com, patrickc@us.ibm.com References: <20180228191828.20056-1-nayna@linux.vnet.ibm.com> <20180228191828.20056-2-nayna@linux.vnet.ibm.com> <20180301092222.GC29420@linux.intel.com> From: Nayna Jain Date: Fri, 2 Mar 2018 00:26:35 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <20180301092222.GC29420@linux.intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-TM-AS-GCONF: 00 x-cbid: 18030118-0056-0000-0000-00000426C582 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008609; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.00996910; UDB=6.00506857; IPR=6.00776227; MB=3.00019805; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-01 18:57:47 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18030118-0057-0000-0000-00000868C68A Message-Id: <6ef601be-5627-6746-bd4a-4f391aba8b04@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-03-01_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803010233 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/01/2018 02:52 PM, Jarkko Sakkinen wrote: > On Wed, Feb 28, 2018 at 02:18:27PM -0500, Nayna Jain wrote: >> In tpm_transmit, after send(), the code checks for status in a loop > Maybe cutting hairs now but please just use the actual function name > instead of send(). Just makes the commit log more useful asset. Sure, will do. > >> - tpm_msleep(TPM_TIMEOUT); >> + tpm_msleep(TPM_TIMEOUT_POLL); > What about just calling schedule()? I'm not sure what you mean by "schedule()".  Are you suggesting instead of using usleep_range(),  using something with an even finer grain construct? Thanks & Regards,      - Nayna > > /Jarkko >