diff options
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index c857dc3975be..9b15f7daf505 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1306,6 +1306,13 @@ static irqreturn_t vmbus_percpu_isr(int irq, void *dev_id) return IRQ_HANDLED; } +static void vmbus_percpu_work(struct work_struct *work) +{ + unsigned int cpu = smp_processor_id(); + + hv_synic_init(cpu); +} + /* * vmbus_bus_init -Main vmbus driver initialization routine. * @@ -1316,7 +1323,8 @@ static irqreturn_t vmbus_percpu_isr(int irq, void *dev_id) */ static int vmbus_bus_init(void) { - int ret; + int ret, cpu; + struct work_struct __percpu *works; ret = hv_init(); if (ret != 0) { @@ -1355,12 +1363,32 @@ static int vmbus_bus_init(void) if (ret) goto err_alloc; + works = alloc_percpu(struct work_struct); + if (!works) { + ret = -ENOMEM; + goto err_alloc; + } + /* * Initialize the per-cpu interrupt state and stimer state. * Then connect to the host. */ - ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hyperv/vmbus:online", - hv_synic_init, hv_synic_cleanup); + cpus_read_lock(); + for_each_online_cpu(cpu) { + struct work_struct *work = per_cpu_ptr(works, cpu); + + INIT_WORK(work, vmbus_percpu_work); + schedule_work_on(cpu, work); + } + + for_each_online_cpu(cpu) + flush_work(per_cpu_ptr(works, cpu)); + + /* Register the callbacks for possible CPU online/offline'ing */ + ret = cpuhp_setup_state_nocalls_cpuslocked(CPUHP_AP_ONLINE_DYN, "hyperv/vmbus:online", + hv_synic_init, hv_synic_cleanup); + cpus_read_unlock(); + free_percpu(works); if (ret < 0) goto err_alloc; hyperv_cpuhp_online = ret; @@ -1803,12 +1831,12 @@ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, return attr->mode; } -static struct attribute_group vmbus_chan_group = { +static const struct attribute_group vmbus_chan_group = { .attrs = vmbus_chan_attrs, .is_visible = vmbus_chan_attr_is_visible }; -static struct kobj_type vmbus_chan_ktype = { +static const struct kobj_type vmbus_chan_ktype = { .sysfs_ops = &vmbus_chan_sysfs_ops, .release = vmbus_chan_release, }; @@ -1952,6 +1980,7 @@ void vmbus_device_unregister(struct hv_device *device_obj) */ device_unregister(&device_obj->device); } +EXPORT_SYMBOL_GPL(vmbus_device_unregister); #ifdef CONFIG_ACPI /* |