From: Alex Sierra <alex.sierra@amd.com>
To: akpm@linux-foundation.org, Felix.Kuehling@amd.com,
linux-mm@kvack.org, rcampbell@nvidia.com,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org
Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
hch@lst.de, jgg@nvidia.com, jglisse@redhat.com
Subject: [PATCH v2 08/12] lib: test_hmm add ioctl to get zone device type
Date: Mon, 13 Sep 2021 11:16:00 -0500 [thread overview]
Message-ID: <20210913161604.31981-9-alex.sierra@amd.com> (raw)
In-Reply-To: <20210913161604.31981-1-alex.sierra@amd.com>
new ioctl cmd added to query zone device type. This will be
used once the test_hmm adds zone device public type.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
---
lib/test_hmm.c | 15 ++++++++++++++-
lib/test_hmm_uapi.h | 7 +++++++
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 6998f10350ea..3cd91ca31dd7 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -82,6 +82,7 @@ struct dmirror_chunk {
struct dmirror_device {
struct cdev cdevice;
struct hmm_devmem *devmem;
+ unsigned int zone_device_type;
unsigned int devmem_capacity;
unsigned int devmem_count;
@@ -468,6 +469,7 @@ static bool dmirror_allocate_chunk(struct dmirror_device *mdevice,
if (IS_ERR(res))
goto err_devmem;
+ mdevice->zone_device_type = HMM_DMIRROR_MEMORY_DEVICE_PRIVATE;
devmem->pagemap.type = MEMORY_DEVICE_PRIVATE;
devmem->pagemap.range.start = res->start;
devmem->pagemap.range.end = res->end;
@@ -912,6 +914,15 @@ static int dmirror_snapshot(struct dmirror *dmirror,
return ret;
}
+static int dmirror_get_device_type(struct dmirror *dmirror,
+ struct hmm_dmirror_cmd *cmd)
+{
+ mutex_lock(&dmirror->mutex);
+ cmd->zone_device_type = 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)
@@ -952,7 +963,9 @@ static long dmirror_fops_unlocked_ioctl(struct file *filp,
case HMM_DMIRROR_SNAPSHOT:
ret = dmirror_snapshot(dmirror, &cmd);
break;
-
+ case HMM_DMIRROR_GET_MEM_DEV_TYPE:
+ ret = dmirror_get_device_type(dmirror, &cmd);
+ break;
default:
return -EINVAL;
}
diff --git a/lib/test_hmm_uapi.h b/lib/test_hmm_uapi.h
index 670b4ef2a5b6..ee88701793d5 100644
--- a/lib/test_hmm_uapi.h
+++ b/lib/test_hmm_uapi.h
@@ -26,6 +26,7 @@ struct hmm_dmirror_cmd {
__u64 npages;
__u64 cpages;
__u64 faults;
+ __u64 zone_device_type;
};
/* Expose the address space of the calling process through hmm device file */
@@ -33,6 +34,7 @@ struct hmm_dmirror_cmd {
#define HMM_DMIRROR_WRITE _IOWR('H', 0x01, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_MIGRATE _IOWR('H', 0x02, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_SNAPSHOT _IOWR('H', 0x03, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_GET_MEM_DEV_TYPE _IOWR('H', 0x04, struct hmm_dmirror_cmd)
/*
* Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT.
@@ -60,4 +62,9 @@ enum {
HMM_DMIRROR_PROT_DEV_PRIVATE_REMOTE = 0x30,
};
+enum {
+ /* 0 is reserved to catch uninitialized type fields */
+ HMM_DMIRROR_MEMORY_DEVICE_PRIVATE = 1,
+};
+
#endif /* _LIB_TEST_HMM_UAPI_H */
--
2.32.0
next prev parent reply other threads:[~2021-09-13 16:16 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 16:15 [PATCH v2 00/12] MEMORY_DEVICE_PUBLIC for CPU-accessible coherent device memory Alex Sierra
2021-09-13 16:15 ` [PATCH v2 01/12] ext4/xfs: add page refcount helper Alex Sierra
2021-09-13 16:15 ` [PATCH v2 02/12] mm: remove extra ZONE_DEVICE struct page refcount Alex Sierra
2021-09-15 5:32 ` Ralph Campbell
2021-09-15 5:32 ` Ralph Campbell
2021-09-13 16:15 ` [PATCH v2 03/12] mm: add zone device public type memory support Alex Sierra
2021-09-13 16:15 ` [PATCH v2 04/12] mm: add device public vma selection for memory migration Alex Sierra
2021-09-13 16:15 ` [PATCH v2 05/12] drm/amdkfd: ref count init for device pages Alex Sierra
2021-09-13 16:15 ` [PATCH v2 06/12] drm/amdkfd: add SPM support for SVM Alex Sierra
2021-09-13 16:15 ` [PATCH v2 07/12] drm/amdkfd: public type as sys mem on migration to ram Alex Sierra
2021-09-13 16:16 ` Alex Sierra [this message]
2021-09-13 16:16 ` [PATCH v2 09/12] lib: test_hmm add module param for zone device type Alex Sierra
2021-09-20 8:53 ` Alistair Popple
2021-09-20 20:05 ` Sierra Guiza, Alejandro (Alex)
2021-09-21 5:14 ` Alistair Popple
2021-09-23 15:52 ` Sierra Guiza, Alejandro (Alex)
2021-10-01 0:28 ` Alistair Popple
2021-09-13 16:16 ` [PATCH v2 10/12] lib: add support for device public type in test_hmm Alex Sierra
2021-10-01 1:32 ` Alistair Popple
2021-09-13 16:16 ` [PATCH v2 11/12] tools: update hmm-test to support device public type Alex Sierra
2021-09-13 16:16 ` [PATCH v2 12/12] tools: update test_hmm script to support SP config Alex Sierra
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