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| author |   Jérôme Glisse <jglisse@redhat.com> | 2017-09-08 16:11:23 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-08 18:26:45 -0700 |
| commit | 133ff0eac95b7dc6edf89dc51bd139a0630bbae7 (patch) | |
| tree | 89e803ee7511b95e2633a57d49218f75d7fc8fb0 /include/linux/mm_types.h | |
| parent | hmm: heterogeneous memory management documentation (diff) | |
| download | linux-dev-133ff0eac95b7dc6edf89dc51bd139a0630bbae7.tar.xz linux-dev-133ff0eac95b7dc6edf89dc51bd139a0630bbae7.zip | |
mm/hmm: heterogeneous memory management (HMM for short)
HMM provides 3 separate types of functionality:
- Mirroring: synchronize CPU page table and device page table
- Device memory: allocating struct page for device memory
- Migration: migrating regular memory to device memory
This patch introduces some common helpers and definitions to all of
those 3 functionality.
Link: http://lkml.kernel.org/r/20170817000548.32038-3-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Evgeny Baskakov <ebaskakov@nvidia.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Mark Hairgrove <mhairgrove@nvidia.com>
Signed-off-by: Sherry Cheung <SCheung@nvidia.com>
Signed-off-by: Subhash Gutti <sgutti@nvidia.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Nellans <dnellans@nvidia.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Bob Liu <liubo95@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index f45ad815b7d7..46f4ecf5479a 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -23,6 +23,7 @@ struct address_space; struct mem_cgroup; +struct hmm; /* * Each physical page in the system has a struct page associated with @@ -503,6 +504,11 @@ struct mm_struct { atomic_long_t hugetlb_usage; #endif struct work_struct async_put_work; + +#if IS_ENABLED(CONFIG_HMM) + /* HMM needs to track a few things per mm */ + struct hmm *hmm; +#endif } __randomize_layout; extern struct mm_struct init_mm; |