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Mon, 17 May 2021 06:43:09 +0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 14H6h7n627853142 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 17 May 2021 06:43:07 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 80BC9BE051; Mon, 17 May 2021 06:43:07 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AC879BE054; Mon, 17 May 2021 06:43:02 +0000 (GMT) Received: from localhost.localdomain (unknown [9.199.47.29]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 17 May 2021 06:43:02 +0000 (GMT) Subject: Re: [RFC 1/4] drivers/nvdimm: Add perf interface to expose nvdimm performance stats To: Peter Zijlstra References: <20210512163824.255370-1-kjain@linux.ibm.com> <20210512163824.255370-2-kjain@linux.ibm.com> <37015d53-050a-acef-2958-b1ff5d02800b@linux.ibm.com> From: kajoljain Message-ID: Date: Mon, 17 May 2021 12:13:00 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: xDZBL9g-YAuBZJRqZNYjG2Yjrq2uXwea X-Proofpoint-GUID: xDZBL9g-YAuBZJRqZNYjG2Yjrq2uXwea X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-05-17_01:2021-05-12,2021-05-17 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxscore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 mlxlogscore=794 priorityscore=1501 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105170046 Message-ID-Hash: Y4J7BUJWPM6O76P7QEZ7N4PIEKTACVWI X-Message-ID-Hash: Y4J7BUJWPM6O76P7QEZ7N4PIEKTACVWI X-MailFrom: kjain@linux.ibm.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, maddy@linux.vnet.ibm.com, aneesh.kumar@linux.ibm.com, vaibhav@linux.ibm.com, atrajeev@linux.vnet.ibm.com, tglx@linutronix.de X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On 5/14/21 5:17 PM, Peter Zijlstra wrote: > On Thu, May 13, 2021 at 05:56:14PM +0530, kajoljain wrote: > >> But yes the current read/add/del functions are not adding value. We >> could add an arch/platform specific function which could handle the >> capturing of the counter data and do the rest of the operation here, >> is this approach better? > > Right; have your register_nvdimm_pmu() set pmu->{add,del,read} to > nd_pmu->{add,del,read} directly, don't bother with these intermediates. > Also you can WARN_ON_ONCE() if any of them are NULL and fail > registration at that point. > Hi Peter, I will make all required changes and send next version of this patchset soon. Thanks, Kajol Jain _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org