diff options
| author | Alex Sierra <alex.sierra@amd.com> | 2022-07-15 17:05:15 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-18 02:14:28 +0200 |
| commit | 188f48268d04f3851cf30151af9025f1f661cc6f (patch) | |
| tree | 07697eaca069dbdc642c3f14b15fb4c059ad66d8 /lib/test_hmm.c | |
| parent | drm/amdkfd: add SPM support for SVM (diff) | |
| download | linux-188f48268d04f3851cf30151af9025f1f661cc6f.tar.xz linux-188f48268d04f3851cf30151af9025f1f661cc6f.zip | |
lib: test_hmm add ioctl to get zone device type
Add new ioctl cmd to query zone device type. This will be used once the
test_hmm adds zone device coherent type.
Link: https://lkml.kernel.org/r/20220715150521.18165-9-alex.sierra@amd.com
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alistair Poppple <apopple@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/test_hmm.c')
| -rw-r--r-- | lib/test_hmm.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/test_hmm.c b/lib/test_hmm.c index f2c3015c5c82..ed737eae5959 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -87,6 +87,7 @@ 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; @@ -1266,14 +1267,20 @@ static void dmirror_device_remove(struct dmirror_device *mdevice) static int __init hmm_dmirror_init(void) { int ret; - int id; + int id = 0; + int ndevices = 0; ret = alloc_chrdev_region(&dmirror_dev, 0, DMIRROR_NDEVICES, "HMM_DMIRROR"); if (ret) goto err_unreg; - for (id = 0; id < DMIRROR_NDEVICES; id++) { + memset(dmirror_devices, 0, DMIRROR_NDEVICES * sizeof(dmirror_devices[0])); + dmirror_devices[ndevices++].zone_device_type = + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE; + dmirror_devices[ndevices++].zone_device_type = + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE; + for (id = 0; id < ndevices; id++) { ret = dmirror_device_init(dmirror_devices + id, id); if (ret) goto err_chrdev; |