| 1 | |
| 2 | |
| 3 | * Suspend support specific for power.
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| 4 | *
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| 5 | * Copyright (c) 2002 Pavel Machek <[email protected]>
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| 6 | * Copyright (c) 2001 Patrick Mochel <[email protected]>
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| 7 |
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| 8 |
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| 9 | #include <linux/mm.h>
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| 10 | #include <linux/suspend.h>
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| 11 | #include <asm/page.h>
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| 12 | #include <asm/sections.h>
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| 13 |
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| 14 | |
| 15 | * pfn_is_nosave - check if given pfn is in the 'nosave' section
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| 16 |
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| 17 |
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| 18 | int pfn_is_nosave(unsigned long pfn)
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| 19 | {
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| 20 | unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
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| 21 | unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
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| 22 | return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
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| 23 | }
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