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Tue, 1 Feb 2022 09:49:15 -0600 From: Alex Sierra To: , , , , , CC: , , , , , , Subject: [PATCH v6 06/10] lib: test_hmm add ioctl to get zone device type Date: Tue, 1 Feb 2022 09:48:57 -0600 Message-ID: <20220201154901.7921-7-alex.sierra@amd.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220201154901.7921-1-alex.sierra@amd.com> References: <20220201154901.7921-1-alex.sierra@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 95ac99f3-db3b-4d7a-195d-08d9e59a679b X-MS-TrafficTypeDiagnostic: MN2PR12MB3824:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4303; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230001)(4636009)(46966006)(36840700001)(40470700004)(426003)(336012)(8936002)(316002)(44832011)(4326008)(8676002)(81166007)(26005)(16526019)(1076003)(186003)(86362001)(36756003)(508600001)(40460700003)(83380400001)(2616005)(2906002)(82310400004)(54906003)(110136005)(7696005)(6666004)(356005)(5660300002)(70586007)(7416002)(70206006)(47076005)(36860700001)(36900700001)(20210929001);DIR:OUT;SFP:1101; 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This will be used once the test_hmm adds zone device coherent type. Signed-off-by: Alex Sierra Acked-by: Felix Kuehling Reviewed-by: Alistair Poppple --- lib/test_hmm.c | 23 +++++++++++++++++++++-- lib/test_hmm_uapi.h | 8 ++++++++ 2 files changed, 29 insertions(+), 2 deletions(-) diff --git a/lib/test_hmm.c b/lib/test_hmm.c index 767538089a62..556bd80ce22e 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -84,6 +84,7 @@ struct dmirror_chunk { struct dmirror_device { struct cdev cdevice; struct hmm_devmem *devmem; + unsigned int zone_device_type; =20 unsigned int devmem_capacity; unsigned int devmem_count; @@ -1024,6 +1025,15 @@ static int dmirror_snapshot(struct dmirror *dmirro= r, return ret; } =20 +static int dmirror_get_device_type(struct dmirror *dmirror, + struct hmm_dmirror_cmd *cmd) +{ + mutex_lock(&dmirror->mutex); + cmd->zone_device_type =3D dmirror->mdevice->zone_device_type; + mutex_unlock(&dmirror->mutex); + + return 0; +} static long dmirror_fops_unlocked_ioctl(struct file *filp, unsigned int command, unsigned long arg) @@ -1074,6 +1084,9 @@ static long dmirror_fops_unlocked_ioctl(struct file= *filp, ret =3D dmirror_snapshot(dmirror, &cmd); break; =20 + case HMM_DMIRROR_GET_MEM_DEV_TYPE: + ret =3D dmirror_get_device_type(dmirror, &cmd); + break; default: return -EINVAL; } @@ -1258,14 +1271,20 @@ static void dmirror_device_remove(struct dmirror_= device *mdevice) static int __init hmm_dmirror_init(void) { int ret; - int id; + int id =3D 0; + int ndevices =3D 0; =20 ret =3D alloc_chrdev_region(&dmirror_dev, 0, DMIRROR_NDEVICES, "HMM_DMIRROR"); if (ret) goto err_unreg; =20 - for (id =3D 0; id < DMIRROR_NDEVICES; id++) { + memset(dmirror_devices, 0, DMIRROR_NDEVICES * sizeof(dmirror_devices[0]= )); + dmirror_devices[ndevices++].zone_device_type =3D + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE; + dmirror_devices[ndevices++].zone_device_type =3D + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE; + for (id =3D 0; id < ndevices; id++) { ret =3D dmirror_device_init(dmirror_devices + id, id); if (ret) goto err_chrdev; diff --git a/lib/test_hmm_uapi.h b/lib/test_hmm_uapi.h index f14dea5dcd06..17f842f1aa02 100644 --- a/lib/test_hmm_uapi.h +++ b/lib/test_hmm_uapi.h @@ -19,6 +19,7 @@ * @npages: (in) number of pages to read/write * @cpages: (out) number of pages copied * @faults: (out) number of device page faults seen + * @zone_device_type: (out) zone device memory type */ struct hmm_dmirror_cmd { __u64 addr; @@ -26,6 +27,7 @@ struct hmm_dmirror_cmd { __u64 npages; __u64 cpages; __u64 faults; + __u64 zone_device_type; }; =20 /* Expose the address space of the calling process through hmm device fi= le */ @@ -35,6 +37,7 @@ struct hmm_dmirror_cmd { #define HMM_DMIRROR_SNAPSHOT _IOWR('H', 0x03, struct hmm_dmirror_cmd) #define HMM_DMIRROR_EXCLUSIVE _IOWR('H', 0x04, struct hmm_dmirror_cmd) #define HMM_DMIRROR_CHECK_EXCLUSIVE _IOWR('H', 0x05, struct hmm_dmirror_= cmd) +#define HMM_DMIRROR_GET_MEM_DEV_TYPE _IOWR('H', 0x06, struct hmm_dmirror= _cmd) =20 /* * Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT. @@ -62,4 +65,9 @@ enum { HMM_DMIRROR_PROT_DEV_PRIVATE_REMOTE =3D 0x30, }; =20 +enum { + /* 0 is reserved to catch uninitialized type fields */ + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE =3D 1, +}; + #endif /* _LIB_TEST_HMM_UAPI_H */ --=20 2.32.0