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| author | Chen Gang <xili_gchen_5257@hotmail.com> | 2016-01-14 15:18:33 -0800 |
|---|---|---|
| committer | Mark Salyzyn <salyzyn@google.com> | 2017-03-30 09:09:03 -0700 |
| commit | 510b819279cb6d4b803059ef66ec1bc05e187a04 (patch) | |
| tree | 2aed9acd2dbd1eac765e977676e94acb18da8090 /tools/perf/scripts/python | |
| parent | e1feee06592832d3b9f51e0649b18d34f0a5e16e (diff) | |
UPSTREAM: mm: add PHYS_PFN, use it in __phys_to_pfn()
(cherry pick from commit 8f235d1a3eb7198affe7cadf676a10afb8a46a1a)
__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
[akpm@linux-foundation.org: use macro arg name `x']
[arnd@arndb.de: include linux/pfn.h for PHYS_PFN definition]
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bug: 20045882
Bug: 19198045
Change-Id: If968d2246b381b9e5d6446e9d6d9fa45bb718e91
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions