static void acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) { struct acpi_processor *pr; struct acpi_device *device = NULL; int result; switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor driver received %s event\n", (event == ACPI_NOTIFY_BUS_CHECK) ? "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK")); if (!is_processor_present(handle)) break; if (acpi_bus_get_device(handle, &device)) { result = acpi_processor_device_add(handle, &device); if (result) printk(KERN_ERR PREFIX "Unable to add the device\n"); break; } break; case ACPI_NOTIFY_EJECT_REQUEST: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "received ACPI_NOTIFY_EJECT_REQUEST\n")); if (acpi_bus_get_device(handle, &device)) { printk(KERN_ERR PREFIX "Device don't exist, dropping EJECT\n"); break; } pr = acpi_driver_data(device); if (!pr) { printk(KERN_ERR PREFIX "Driver data is NULL, dropping EJECT\n"); return; } break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } return; }
static void acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) { struct acpi_processor *pr; struct acpi_device *device = NULL; u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */ int result; switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor driver received %s event\n", (event == ACPI_NOTIFY_BUS_CHECK) ? "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK")); if (!is_processor_present(handle)) break; if (!acpi_bus_get_device(handle, &device)) break; result = acpi_processor_device_add(handle, &device); if (result) { pr_err(PREFIX "Unable to add the device\n"); break; } ost_code = ACPI_OST_SC_SUCCESS; break; case ACPI_NOTIFY_EJECT_REQUEST: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "received ACPI_NOTIFY_EJECT_REQUEST\n")); if (acpi_bus_get_device(handle, &device)) { pr_err(PREFIX "Device don't exist, dropping EJECT\n"); break; } pr = acpi_driver_data(device); if (!pr) { pr_err(PREFIX "Driver data is NULL, dropping EJECT\n"); break; } /* * TBD: implement acpi_processor_device_remove if Xen support * CPU hotremove in the future. */ acpi_processor_device_remove(device); break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); /* non-hotplug event; possibly handled by other handler */ return; } (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL); return; }
static void acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) { struct acpi_processor *pr; struct acpi_device *device = NULL; int result; ACPI_FUNCTION_TRACE("acpi_processor_hotplug_notify"); switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: printk("Processor driver received %s event\n", (event == ACPI_NOTIFY_BUS_CHECK) ? "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"); if (!is_processor_present(handle)) break; if (acpi_bus_get_device(handle, &device)) { result = acpi_processor_device_add(handle, &device); if (result) ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to add the device\n")); break; } pr = acpi_driver_data(device); if (!pr) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Driver data is NULL\n")); break; } if (pr->id >= 0 && (pr->id < NR_CPUS)) { kobject_hotplug(&device->kobj, KOBJ_OFFLINE); break; } result = acpi_processor_start(device); if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) { kobject_hotplug(&device->kobj, KOBJ_ONLINE); } else { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Device [%s] failed to start\n", acpi_device_bid(device))); } break; case ACPI_NOTIFY_EJECT_REQUEST: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "received ACPI_NOTIFY_EJECT_REQUEST\n")); if (acpi_bus_get_device(handle, &device)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Device don't exist, dropping EJECT\n")); break; } pr = acpi_driver_data(device); if (!pr) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Driver data is NULL, dropping EJECT\n")); return_VOID; } if ((pr->id < NR_CPUS) && (cpu_present(pr->id))) kobject_hotplug(&device->kobj, KOBJ_OFFLINE); break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); break; } return_VOID; }
static void acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) { struct acpi_processor *pr; struct acpi_device *device = NULL; u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */ int result; switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor driver received %s event\n", (event == ACPI_NOTIFY_BUS_CHECK) ? "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK")); if (!is_processor_present(handle)) break; if (!acpi_bus_get_device(handle, &device)) break; result = acpi_processor_device_add(handle, &device); if (result) { printk(KERN_ERR PREFIX "Unable to add the device\n"); break; } ost_code = ACPI_OST_SC_SUCCESS; break; case ACPI_NOTIFY_EJECT_REQUEST: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "received ACPI_NOTIFY_EJECT_REQUEST\n")); if (acpi_bus_get_device(handle, &device)) { printk(KERN_ERR PREFIX "Device don't exist, dropping EJECT\n"); break; } pr = acpi_driver_data(device); if (!pr) { printk(KERN_ERR PREFIX "Driver data is NULL, dropping EJECT\n"); break; } /* REVISIT: update when eject is supported */ ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; break; default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported event [0x%x]\n", event)); /* non-hotplug event; possibly handled by other handler */ return; } /* Inform firmware that the hotplug operation has completed */ (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL); return; }