LXR linux/arch/sh/kernel/swsusp.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * swsusp.c - SuperH hibernation support
   4 *
   5 * Copyright (C) 2009 Magnus Damm
   6 */
   7
   8#include <linux/mm.h>
   9#include <linux/sched.h>
  10#include <linux/suspend.h>
  11#include <asm/suspend.h>
  12#include <asm/sections.h>
  13#include <asm/tlbflush.h>
  14#include <asm/page.h>
  15#include <asm/fpu.h>
  16
  17struct swsusp_arch_regs swsusp_arch_regs_cpu0;
  18
  19int pfn_is_nosave(unsigned long pfn)
  20{
  21        unsigned long begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
  22        unsigned long end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
  23
  24        return (pfn >= begin_pfn) && (pfn < end_pfn);
  25}
  26
  27void save_processor_state(void)
  28{
  29        init_fpu(current);
  30}
  31
  32void restore_processor_state(void)
  33{
  34        local_flush_tlb_all();
  35}
  36