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| author | Vlastimil Babka <[email protected]> | 2016-02-05 23:36:41 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-02-06 02:10:40 +0000 |
| commit | 080fe2068e1c7f19f565b30b78baf78edf16a980 (patch) | |
| tree | d2af16ed6fe7040c1de9a658552753e1dfbdad64 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | mm/hugetlb: fix gigantic page initialization/allocation (diff) | |
| download | kernel-080fe2068e1c7f19f565b30b78baf78edf16a980.tar.gz kernel-080fe2068e1c7f19f565b30b78baf78edf16a980.zip | |
mm, hugetlb: don't require CMA for runtime gigantic pages
Commit 944d9fec8d7a ("hugetlb: add support for gigantic page allocation
at runtime") has added the runtime gigantic page allocation via
alloc_contig_range(), making this support available only when CONFIG_CMA
is enabled. Because it doesn't depend on MIGRATE_CMA pageblocks and the
associated infrastructure, it is possible with few simple adjustments to
require only CONFIG_MEMORY_ISOLATION instead of full CONFIG_CMA.
After this patch, alloc_contig_range() and related functions are
available and used for gigantic pages with just CONFIG_MEMORY_ISOLATION
enabled. Note CONFIG_CMA selects CONFIG_MEMORY_ISOLATION. This allows
supporting runtime gigantic pages without the CMA-specific checks in
page allocator fastpaths.
Signed-off-by: Vlastimil Babka <[email protected]>
Cc: Luiz Capitulino <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Zhang Yanfei <[email protected]>
Cc: Yasuaki Ishimatsu <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Mike Kravetz <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions