From: Alex Sierra <alex.sierra@amd.com>
To: <jgg@nvidia.com>
Cc: rcampbell@nvidia.com, willy@infradead.org, david@redhat.com,
Felix.Kuehling@amd.com, apopple@nvidia.com,
amd-gfx@lists.freedesktop.org, linux-xfs@vger.kernel.org,
linux-mm@kvack.org, jglisse@redhat.com,
dri-devel@lists.freedesktop.org, akpm@linux-foundation.org,
linux-ext4@vger.kernel.org, hch@lst.de
Subject: [PATCH v9 08/14] lib: test_hmm add ioctl to get zone device type
Date: Fri, 15 Jul 2022 10:05:15 -0500 [thread overview]
Message-ID: <20220715150521.18165-9-alex.sierra@amd.com> (raw)
In-Reply-To: <20220715150521.18165-1-alex.sierra@amd.com>
new ioctl cmd added to query zone device type. This will be
used once the test_hmm adds zone device coherent type.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alistair Poppple <apopple@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
lib/test_hmm.c | 11 +++++++++--
lib/test_hmm_uapi.h | 14 ++++++++++----
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index cfe632047839..915ef6b5b0d4 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;
@@ -1260,14 +1261,20 @@ 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;
diff --git a/lib/test_hmm_uapi.h b/lib/test_hmm_uapi.h
index f14dea5dcd06..0511af7464ee 100644
--- a/lib/test_hmm_uapi.h
+++ b/lib/test_hmm_uapi.h
@@ -31,10 +31,11 @@ struct hmm_dmirror_cmd {
/* Expose the address space of the calling process through hmm device file */
#define HMM_DMIRROR_READ _IOWR('H', 0x00, 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_EXCLUSIVE _IOWR('H', 0x04, struct hmm_dmirror_cmd)
-#define HMM_DMIRROR_CHECK_EXCLUSIVE _IOWR('H', 0x05, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_MIGRATE_TO_DEV _IOWR('H', 0x02, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_MIGRATE_TO_SYS _IOWR('H', 0x03, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_SNAPSHOT _IOWR('H', 0x04, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_EXCLUSIVE _IOWR('H', 0x05, struct hmm_dmirror_cmd)
+#define HMM_DMIRROR_CHECK_EXCLUSIVE _IOWR('H', 0x06, struct hmm_dmirror_cmd)
/*
* Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT.
@@ -62,4 +63,9 @@ 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:[~2022-07-16 14:38 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 15:05 [PATCH v9 00/14] Add MEMORY_DEVICE_COHERENT for coherent device memory mapping Alex Sierra
2022-07-15 15:05 ` [PATCH v9 01/14] mm: rename is_pinnable_pages to is_longterm_pinnable_pages Alex Sierra
2022-07-15 15:05 ` [PATCH v9 02/14] mm: move page zone helpers from mm.h to mmzone.h Alex Sierra
2022-07-18 10:50 ` David Hildenbrand
2022-07-18 17:52 ` Felix Kuehling
2022-07-18 18:46 ` David Hildenbrand
2023-06-15 19:33 ` Peter Xu
2023-06-15 20:15 ` Matthew Wilcox
2023-06-15 20:48 ` Peter Xu
2022-07-15 15:05 ` [PATCH v9 03/14] mm: add zone device coherent type memory support Alex Sierra
2022-07-15 15:05 ` [PATCH v9 04/14] mm: handling Non-LRU pages returned by vm_normal_pages Alex Sierra
2022-07-18 10:51 ` David Hildenbrand
2022-07-15 15:05 ` [PATCH v9 05/14] mm: add device coherent vma selection for memory migration Alex Sierra
2022-07-15 15:05 ` [PATCH v9 06/14] mm/gup: migrate device coherent pages when pinning instead of failing Alex Sierra
2022-07-18 10:56 ` David Hildenbrand
2022-07-18 20:32 ` Andrew Morton
2022-07-19 8:40 ` David Hildenbrand
2022-07-26 2:22 ` Sierra Guiza, Alejandro (Alex)
2022-07-26 19:05 ` Andrew Morton
2022-07-15 15:05 ` [PATCH v9 07/14] drm/amdkfd: add SPM support for SVM Alex Sierra
2022-07-15 15:05 ` Alex Sierra [this message]
2022-07-15 15:05 ` [PATCH v9 09/14] lib: test_hmm add module param for zone device type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 10/14] lib: add support for device coherent type in test_hmm Alex Sierra
2022-07-15 15:05 ` [PATCH v9 11/14] tools: update hmm-test to support device coherent type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 12/14] tools: update test_hmm script to support SP config Alex Sierra
2022-07-15 15:05 ` [PATCH v9 13/14] tools: add hmm gup tests for device coherent type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 14/14] tools: add selftests to hmm for COW in device memory Alex Sierra
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