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authorAlex Sierra <alex.sierra@amd.com>2022-07-15 18:05:15 +0300
committerakpm <akpm@linux-foundation.org>2022-07-18 03:14:28 +0300
commit188f48268d04f3851cf30151af9025f1f661cc6f (patch)
tree07697eaca069dbdc642c3f14b15fb4c059ad66d8 /lib/test_hmm.c
parentc83dee9b639469b6563a281f39deb99311f16bc4 (diff)
downloadlinux-188f48268d04f3851cf30151af9025f1f661cc6f.tar.xz
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.c11
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;