arch/x86/xen/suspend.c

   1 #include <linux/types.h>
   2 #include <linux/tick.h>
   3
   4 #include <xen/xen.h>
   5 #include <xen/interface/xen.h>
   6 #include <xen/grant_table.h>
   7 #include <xen/events.h>
   8
   9 #include <asm/xen/hypercall.h>
  10 #include <asm/xen/page.h>
  11 #include <asm/fixmap.h>
  12
  13 #include "xen-ops.h"
  14 #include "mmu.h"
  15 #include "pmu.h"
  16
  17 void xen_arch_pre_suspend(void)
  18 {
  19         if (xen_pv_domain())
  20                 xen_pv_pre_suspend();
  21 }
  22
  23 void xen_arch_post_suspend(int cancelled)
  24 {
  25         if (xen_pv_domain())
  26                 xen_pv_post_suspend(cancelled);
  27         else
  28                 xen_hvm_post_suspend(cancelled);
  29 }
  30
  31 static void xen_vcpu_notify_restore(void *data)
  32 {
  33         /* Boot processor notified via generic timekeeping_resume() */
  34         if (smp_processor_id() == 0)
  35                 return;
  36
  37         tick_resume_local();
  38 }
  39
  40 static void xen_vcpu_notify_suspend(void *data)
  41 {
  42         tick_suspend_local();
  43 }
  44
  45 void xen_arch_resume(void)
  46 {
  47         int cpu;
  48
  49         on_each_cpu(xen_vcpu_notify_restore, NULL, 1);
  50
  51         for_each_online_cpu(cpu)
  52                 xen_pmu_init(cpu);
  53 }
  54
  55 void xen_arch_suspend(void)
  56 {
  57         int cpu;
  58
  59         for_each_online_cpu(cpu)
  60                 xen_pmu_finish(cpu);
  61
  62         on_each_cpu(xen_vcpu_notify_suspend, NULL, 1);
  63 }