preliminary support for save/restore. Although Save/restore isn't fully working yet, this patch is necessary to compile. Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx> --- arch/ia64/xen/Makefile | 2 +- arch/ia64/xen/{time.h => suspend.c} | 40 +++++++++++++++++++++++++++++++++- arch/ia64/xen/time.c | 33 ++++++++++++++++++++++++++++ arch/ia64/xen/time.h | 1 + 4 files changed, 73 insertions(+), 3 deletions(-) copy arch/ia64/xen/{time.h => suspend.c} (66%) diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile index 972d085..0ad0224 100644 --- a/arch/ia64/xen/Makefile +++ b/arch/ia64/xen/Makefile @@ -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 diff --git a/arch/ia64/xen/time.h b/arch/ia64/xen/suspend.c similarity index 66% copy from arch/ia64/xen/time.h copy to arch/ia64/xen/suspend.c index b9c7ec5..b4ce6b6 100644 --- a/arch/ia64/xen/time.h +++ b/arch/ia64/xen/suspend.c @@ -1,5 +1,5 @@ /****************************************************************************** - * arch/ia64/xen/time.h + * arch/ia64/xen/suspend.c * * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp> * VA Linux Systems Japan K.K. @@ -18,6 +18,42 @@ * 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 */ -extern struct pv_time_ops xen_time_ops __initdata; +#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_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(); +} diff --git a/arch/ia64/xen/time.c b/arch/ia64/xen/time.c index 3414f1e..81a61e8 100644 --- a/arch/ia64/xen/time.c +++ b/arch/ia64/xen/time.c @@ -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> @@ -163,3 +165,34 @@ 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, 0, 1); +} diff --git a/arch/ia64/xen/time.h b/arch/ia64/xen/time.h index b9c7ec5..f98d7e1 100644 --- a/arch/ia64/xen/time.h +++ b/arch/ia64/xen/time.h @@ -21,3 +21,4 @@ */ extern struct pv_time_ops xen_time_ops __initdata; +void xen_timer_resume_on_aps(void); -- 1.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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