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| author |   Alexander Gordeev <agordeev@linux.ibm.com> | 2020-02-25 12:44:06 +0100 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-03-06 11:37:41 +0100 |
| commit | 014b020475d4b9670d3cff11b751a7c20208f78b (patch) | |
| tree | 59c4f2e438b804606a422299cd0f677e07edabc3 /arch/s390 | |
| parent | MAINTAINERS: Update s390/pci maintainer (diff) | |
| download | linux-dev-014b020475d4b9670d3cff11b751a7c20208f78b.tar.xz linux-dev-014b020475d4b9670d3cff11b751a7c20208f78b.zip | |
s390/mm: cleanup phys_to_pfn() and friends
Make page, frame, virtual and physical address conversion macros
more expressive by avoiding redundant definitions and defining
new macros using existing ones.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/page.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 85e944f04c70..2e53b27f4f1a 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -161,20 +161,20 @@ static inline int devmem_is_allowed(unsigned long pfn) #define __pa(x) ((unsigned long)(x)) #define __va(x) ((void *)(unsigned long)(x)) -#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) +#define phys_to_pfn(phys) ((phys) >> PAGE_SHIFT) +#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) + +#define phys_to_page(phys) pfn_to_page(phys_to_pfn(phys)) +#define page_to_phys(page) pfn_to_phys(page_to_pfn(page)) + +#define pfn_to_virt(pfn) __va(pfn_to_phys(pfn)) +#define virt_to_pfn(kaddr) (phys_to_pfn(__pa(kaddr))) #define pfn_to_kaddr(pfn) pfn_to_virt(pfn) #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define page_to_virt(page) pfn_to_virt(page_to_pfn(page)) -#define phys_to_pfn(kaddr) ((kaddr) >> PAGE_SHIFT) -#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) - -#define phys_to_page(kaddr) pfn_to_page(phys_to_pfn(kaddr)) -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) - -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) +#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |