diff options
| author | Chen Gang <[email protected]> | 2016-01-14 15:18:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-01-14 16:00:49 -0800 |
| commit | 8f235d1a3eb7198affe7cadf676a10afb8a46a1a (patch) | |
| tree | 78f5ec435417423e50a3a3d59a0af8abbf5cd15c /tools/perf/scripts/python | |
| parent | 3aa2385111168187f24a6db04697c6fab0fab9b4 (diff) | |
mm: add PHYS_PFN, use it in __phys_to_pfn()
__phys_to_pfn and __pfn_to_phys are symmetric, PHYS_PFN and PFN_PHYS are
semmetric:
- y = (phys_addr_t)x << PAGE_SHIFT
- y >> PAGE_SHIFT = (phys_add_t)x
- (unsigned long)(y >> PAGE_SHIFT) = x
[[email protected]: use macro arg name `x']
[[email protected]: include linux/pfn.h for PHYS_PFN definition]
Signed-off-by: Chen Gang <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions