projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 49c3df6a VG |
1 | /* |
| 2 | * Suspend support specific for power. | |
| 3 | * | |
| 4 | * Distribute under GPLv2 | |
| 5 | * | |
| a2531293 | 6 | * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz> |
| 49c3df6a VG |
7 | * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org> |
| 8 | */ | |
| 9 | ||
| 27ac792c | 10 | #include <linux/mm.h> |
| 49c3df6a VG |
11 | #include <asm/page.h> |
| 12 | ||
| 13 | /* References to section boundaries */ | |
| 14 | extern const void __nosave_begin, __nosave_end; | |
| 15 | ||
| 16 | /* | |
| 17 | * pfn_is_nosave - check if given pfn is in the 'nosave' section | |
| 18 | */ | |
| 19 | ||
| 20 | int pfn_is_nosave(unsigned long pfn) | |
| 21 | { | |
| 22 | unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT; | |
| 23 | unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT; | |
| 24 | return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); | |
| 25 | } |