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| author |   Christoph Hellwig <hch@lst.de> | 2017-12-29 08:53:50 +0100 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2018-01-08 11:43:03 -0800 |
| commit | 8e37d00a850160bbfadbb3bf4ce49539770c5d2c (patch) | |
| tree | 8eae54cbe4129e69d2c91a954624258ea1748a7d /include/linux/memremap.h | |
| parent | Linux 4.15-rc6 (diff) | |
| download | linux-dev-8e37d00a850160bbfadbb3bf4ce49539770c5d2c.tar.xz linux-dev-8e37d00a850160bbfadbb3bf4ce49539770c5d2c.zip | |
memremap: provide stubs for vmem_altmap_offset and vmem_altmap_free
Currently all calls to those functions are eliminated by the compiler when
CONFIG_ZONE_DEVICE is not set, but this soon won't be the case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/memremap.h')
| -rw-r--r-- | include/linux/memremap.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/linux/memremap.h b/include/linux/memremap.h index 10d23c367048..d5a6736d9737 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -26,9 +26,6 @@ struct vmem_altmap { unsigned long alloc; }; -unsigned long vmem_altmap_offset(struct vmem_altmap *altmap); -void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns); - #ifdef CONFIG_ZONE_DEVICE struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start); #else @@ -138,6 +135,9 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, struct percpu_ref *ref, struct vmem_altmap *altmap); struct dev_pagemap *find_dev_pagemap(resource_size_t phys); +unsigned long vmem_altmap_offset(struct vmem_altmap *altmap); +void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns); + static inline bool is_zone_device_page(const struct page *page); #else static inline void *devm_memremap_pages(struct device *dev, @@ -157,7 +157,17 @@ static inline struct dev_pagemap *find_dev_pagemap(resource_size_t phys) { return NULL; } -#endif + +static inline unsigned long vmem_altmap_offset(struct vmem_altmap *altmap) +{ + return 0; +} + +static inline void vmem_altmap_free(struct vmem_altmap *altmap, + unsigned long nr_pfns) +{ +} +#endif /* CONFIG_ZONE_DEVICE */ #if defined(CONFIG_DEVICE_PRIVATE) || defined(CONFIG_DEVICE_PUBLIC) static inline bool is_device_private_page(const struct page *page) |