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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Mathieu Malaterre
1ec0cd8286
The declaration for pfn_is_nosave is only available in kernel/power/power.h. Since this function can be override in arch, expose it globally. Having a prototype will make sure to avoid warning (sometime treated as error with W=1) such as: arch/powerpc/kernel/suspend.c:18:5: error: no previous prototype for 'pfn_is_nosave' [-Werror=missing-prototypes] This moves the declaration into a globally visible header file and add missing include to avoid a warning on powerpc. Also remove the duplicated prototypes since not required anymore. Signed-off-by: Mathieu Malaterre <[email protected]> Acked-by: Michael Ellerman <[email protected]> (powerpc) Signed-off-by: Rafael J. Wysocki <[email protected]>
24 lines
619 B
C
24 lines
619 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Suspend support specific for power.
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*
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* Copyright (c) 2002 Pavel Machek <[email protected]>
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* Copyright (c) 2001 Patrick Mochel <[email protected]>
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*/
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#include <linux/mm.h>
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#include <linux/suspend.h>
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#include <asm/page.h>
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#include <asm/sections.h>
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/*
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* pfn_is_nosave - check if given pfn is in the 'nosave' section
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*/
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int pfn_is_nosave(unsigned long pfn)
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{
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unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
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unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
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return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
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}
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