static int xen_suspend(void *data) { int *cancelled = data; int err; BUG_ON(!irqs_disabled()); load_cr3(swapper_pg_dir); err = device_power_down(PMSG_SUSPEND); if (err) { printk(KERN_ERR "xen_suspend: device_power_down failed: %d\n", err); return err; } xen_mm_pin_all(); gnttab_suspend(); xen_pre_suspend(); /* * This hypercall returns 1 if suspend was cancelled * or the domain was merely checkpointed, and 0 if it * is resuming in a new domain. */ *cancelled = HYPERVISOR_suspend(virt_to_mfn(xen_start_info)); xen_post_suspend(*cancelled); gnttab_resume(); xen_mm_unpin_all(); device_power_up(PMSG_RESUME); if (!*cancelled) { xen_irq_resume(); xen_console_resume(); xen_timer_resume(); } return 0; }
static int xen_suspend(void *data) { struct suspend_info *si = data; int err; BUG_ON(!irqs_disabled()); err = syscore_suspend(); if (err) { pr_err("%s: system core suspend failed: %d\n", __func__, err); return err; } gnttab_suspend(); xen_arch_pre_suspend(); /* * This hypercall returns 1 if suspend was cancelled * or the domain was merely checkpointed, and 0 if it * is resuming in a new domain. */ si->cancelled = HYPERVISOR_suspend(xen_pv_domain() ? virt_to_mfn(xen_start_info) : 0); xen_arch_post_suspend(si->cancelled); gnttab_resume(); if (!si->cancelled) { xen_irq_resume(); xen_console_resume(); xen_timer_resume(); } syscore_resume(); return 0; }
static int xen_suspend(void *data) { struct suspend_info *si = data; int err; BUG_ON(!irqs_disabled()); err = sysdev_suspend(PMSG_FREEZE); if (err) { printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n", err); return err; } if (si->pre) si->pre(); /* * This hypercall returns 1 if suspend was cancelled * or the domain was merely checkpointed, and 0 if it * is resuming in a new domain. */ si->cancelled = HYPERVISOR_suspend(si->arg); if (si->post) si->post(si->cancelled); if (!si->cancelled) { xen_irq_resume(); xen_console_resume(); xen_timer_resume(); } sysdev_resume(); return 0; }
static void do_suspend(void) { int err; struct suspend_info si; shutting_down = SHUTDOWN_SUSPEND; #ifdef CONFIG_PREEMPT /* If the kernel is preemptible, we need to freeze all the processes to prevent them from being in the middle of a pagetable update during suspend. */ err = freeze_processes(); if (err) { pr_err("%s: freeze failed %d\n", __func__, err); goto out; } #endif err = dpm_suspend_start(PMSG_FREEZE); if (err) { pr_err("%s: dpm_suspend_start %d\n", __func__, err); goto out_thaw; } printk(KERN_DEBUG "suspending xenstore...\n"); xs_suspend(); err = dpm_suspend_end(PMSG_FREEZE); if (err) { pr_err("dpm_suspend_end failed: %d\n", err); si.cancelled = 0; goto out_resume; } si.cancelled = 1; err = stop_machine(xen_suspend, &si, cpumask_of(0)); /* Resume console as early as possible. */ if (!si.cancelled) xen_console_resume(); raw_notifier_call_chain(&xen_resume_notifier, 0, NULL); dpm_resume_start(si.cancelled ? PMSG_THAW : PMSG_RESTORE); if (err) { pr_err("failed to start xen_suspend: %d\n", err); si.cancelled = 1; } out_resume: if (!si.cancelled) { xen_arch_resume(); xs_resume(); } else xs_suspend_cancel(); dpm_resume_end(si.cancelled ? PMSG_THAW : PMSG_RESTORE); out_thaw: #ifdef CONFIG_PREEMPT thaw_processes(); out: #endif shutting_down = SHUTDOWN_INVALID; }
static void do_suspend(void) { int err; struct suspend_info si; shutting_down = SHUTDOWN_SUSPEND; err = freeze_processes(); if (err) { pr_err("%s: freeze processes failed %d\n", __func__, err); goto out; } err = freeze_kernel_threads(); if (err) { pr_err("%s: freeze kernel threads failed %d\n", __func__, err); goto out_thaw; } err = dpm_suspend_start(PMSG_FREEZE); if (err) { pr_err("%s: dpm_suspend_start %d\n", __func__, err); goto out_thaw; } printk(KERN_DEBUG "suspending xenstore...\n"); xs_suspend(); err = dpm_suspend_end(PMSG_FREEZE); if (err) { pr_err("dpm_suspend_end failed: %d\n", err); si.cancelled = 0; goto out_resume; } xen_arch_suspend(); si.cancelled = 1; err = stop_machine(xen_suspend, &si, cpumask_of(0)); /* Resume console as early as possible. */ if (!si.cancelled) xen_console_resume(); raw_notifier_call_chain(&xen_resume_notifier, 0, NULL); dpm_resume_start(si.cancelled ? PMSG_THAW : PMSG_RESTORE); if (err) { pr_err("failed to start xen_suspend: %d\n", err); si.cancelled = 1; } xen_arch_resume(); out_resume: if (!si.cancelled) xs_resume(); else xs_suspend_cancel(); dpm_resume_end(si.cancelled ? PMSG_THAW : PMSG_RESTORE); out_thaw: thaw_processes(); out: shutting_down = SHUTDOWN_INVALID; }
static void do_suspend(void) { int err; struct suspend_info si; shutting_down = SHUTDOWN_SUSPEND; err = freeze_processes(); if (err) { pr_err("%s: freeze failed %d\n", __func__, err); goto out; } err = dpm_suspend_start(PMSG_FREEZE); if (err) { pr_err("%s: dpm_suspend_start %d\n", __func__, err); goto out_thaw; } printk(KERN_DEBUG "suspending xenstore...\n"); xs_suspend(); err = dpm_suspend_end(PMSG_FREEZE); if (err) { pr_err("dpm_suspend_end failed: %d\n", err); si.cancelled = 0; goto out_resume; } si.cancelled = 1; if (xen_hvm_domain()) { si.arg = 0UL; si.pre = NULL; si.post = &xen_hvm_post_suspend; } else { si.arg = virt_to_mfn(xen_start_info); si.pre = &xen_pre_suspend; si.post = &xen_post_suspend; } err = stop_machine(xen_suspend, &si, cpumask_of(0)); /* Resume console as early as possible. */ if (!si.cancelled) xen_console_resume(); dpm_resume_start(si.cancelled ? PMSG_THAW : PMSG_RESTORE); if (err) { pr_err("failed to start xen_suspend: %d\n", err); si.cancelled = 1; } out_resume: if (!si.cancelled) { xen_arch_resume(); xs_resume(); } else xs_suspend_cancel(); dpm_resume_end(si.cancelled ? PMSG_THAW : PMSG_RESTORE); out_thaw: thaw_processes(); out: shutting_down = SHUTDOWN_INVALID; }