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Thu, 17 Feb 2022 16:34:21 +0000 (GMT) From: Kajol Jain To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, peterz@infradead.org, dan.j.williams@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com Subject: [PATCH v6 1/4] drivers/nvdimm: Add nvdimm pmu structure Date: Thu, 17 Feb 2022 22:03:54 +0530 Message-Id: <20220217163357.276036-2-kjain@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220217163357.276036-1-kjain@linux.ibm.com> References: <20220217163357.276036-1-kjain@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: K932WkG9nHt-X6dotSvurjcZNjISkOvy X-Proofpoint-GUID: K932WkG9nHt-X6dotSvurjcZNjISkOvy Content-Transfer-Encoding: 8bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-17_06,2022-02-17_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 mlxscore=0 phishscore=0 mlxlogscore=906 suspectscore=0 priorityscore=1501 spamscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202170075 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: santosh@fossix.org, maddy@linux.ibm.com, rnsastry@linux.ibm.com, aneesh.kumar@linux.ibm.com, atrajeev@linux.vnet.ibm.com, kjain@linux.ibm.com, vaibhav@linux.ibm.com, tglx@linutronix.de Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" A structure is added called nvdimm_pmu, for performance stats reporting support of nvdimm devices. It can be used to add device pmu data such as pmu data structure for performance stats, nvdimm device pointer along with cpumask attributes. Signed-off-by: Kajol Jain --- Changelog: Resend v5 -> v6 - No logic change, just a rebase to latest upstream and tested the patch. - Link to the patchset Resend v5: https://lkml.org/lkml/2021/11/15/3979 include/linux/nd.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/nd.h b/include/linux/nd.h index 8a8c63edb1b2..ad186e828263 100644 --- a/include/linux/nd.h +++ b/include/linux/nd.h @@ -8,6 +8,7 @@ #include #include #include +#include enum nvdimm_event { NVDIMM_REVALIDATE_POISON, @@ -23,6 +24,25 @@ enum nvdimm_claim_class { NVDIMM_CCLASS_UNKNOWN, }; +/** + * struct nvdimm_pmu - data structure for nvdimm perf driver + * @pmu: pmu data structure for nvdimm performance stats. + * @dev: nvdimm device pointer. + * @cpu: designated cpu for counter access. + * @node: node for cpu hotplug notifier link. + * @cpuhp_state: state for cpu hotplug notification. + * @arch_cpumask: cpumask to get designated cpu for counter access. + */ +struct nvdimm_pmu { + struct pmu pmu; + struct device *dev; + int cpu; + struct hlist_node node; + enum cpuhp_state cpuhp_state; + /* cpumask provided by arch/platform specific code */ + struct cpumask arch_cpumask; +}; + struct nd_device_driver { struct device_driver drv; unsigned long type; -- 2.31.1