ia64/xen: preliminary support for save/restore. (91834e68) · Commits · 戴 / test

arch/ia64/xen/Makefile

+1 −1

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		@@ -3,7 +3,7 @@
		#

		obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
		hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o
		hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o

		obj-$(CONFIG_IA64_GENERIC) += machvec.o

0 → 100644

+64 −0

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		/******************************************************************************
		* arch/ia64/xen/suspend.c
		*
		* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
		* VA Linux Systems Japan K.K.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		* suspend/resume
		*/

		#include <xen/xen-ops.h>
		#include <asm/xen/hypervisor.h>
		#include "time.h"

		void
		xen_mm_pin_all(void)
		{
		/* nothing */
		}

		void
		xen_mm_unpin_all(void)
		{
		/* nothing */
		}

		void xen_pre_device_suspend(void)
		{
		/* nothing */
		}

		void
		xen_pre_suspend()
		{
		/* nothing */
		}

		void
		xen_post_suspend(int suspend_cancelled)
		{
		if (suspend_cancelled)
		return;

		xen_ia64_enable_opt_feature();
		/* add more if necessary */
		}

		void xen_arch_resume(void)
		{
		xen_timer_resume_on_aps();
		}

+33 −0

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		@@ -26,6 +26,8 @@
		#include <linux/irq.h>
		#include <linux/clocksource.h>

		#include <asm/timex.h>

		#include <asm/xen/hypervisor.h>

		#include <xen/interface/vcpu.h>
		@@ -178,3 +180,34 @@ struct pv_time_ops xen_time_ops __initdata = {
		.do_steal_accounting = xen_do_steal_accounting,
		.clocksource_resume = xen_itc_jitter_data_reset,
		};

		/* Called after suspend, to resume time. */
		static void xen_local_tick_resume(void)
		{
		/* Just trigger a tick. */
		ia64_cpu_local_tick();
		touch_softlockup_watchdog();
		}

		void
		xen_timer_resume(void)
		{
		unsigned int cpu;

		xen_local_tick_resume();

		for_each_online_cpu(cpu)
		xen_init_missing_ticks_accounting(cpu);
		}

		static void ia64_cpu_local_tick_fn(void *unused)
		{
		xen_local_tick_resume();
		xen_init_missing_ticks_accounting(smp_processor_id());
		}

		void
		xen_timer_resume_on_aps(void)
		{
		smp_call_function(&ia64_cpu_local_tick_fn, NULL, 1);
		}

+1 −0

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		@@ -21,3 +21,4 @@
		*/

		extern struct pv_time_ops xen_time_ops __initdata;
		void xen_timer_resume_on_aps(void);