diff options
-rw-r--r-- | drivers/staging/greybus/greybus_trace.h | 53 | ||||
-rw-r--r-- | drivers/staging/greybus/module.c | 9 |
2 files changed, 62 insertions, 0 deletions
diff --git a/drivers/staging/greybus/greybus_trace.h b/drivers/staging/greybus/greybus_trace.h index cbbc959..ecf2253 100644 --- a/drivers/staging/greybus/greybus_trace.h +++ b/drivers/staging/greybus/greybus_trace.h @@ -156,6 +156,59 @@ DEFINE_OPERATION_EVENT(gb_operation_put_active); #undef DEFINE_OPERATION_EVENT +DECLARE_EVENT_CLASS(gb_module, + + TP_PROTO(struct gb_module *module), + + TP_ARGS(module), + + TP_STRUCT__entry( + __field(int, hd_bus_id) + __field(u8, module_id) + __field(u8, num_interfaces) + __field(bool, disconnected) + ), + + TP_fast_assign( + __entry->hd_bus_id = module->hd->bus_id; + __entry->module_id = module->module_id; + __entry->disconnected = module->disconnected; + ), + + TP_printk("greybus: hd_bus_id=%d module_id=%hhu disconnected=%u", + __entry->hd_bus_id, __entry->module_id, __entry->disconnected) +); + +#define DEFINE_MODULE_EVENT(name) \ + DEFINE_EVENT(gb_module, name, \ + TP_PROTO(struct gb_module *module), \ + TP_ARGS(module)) + +/* + * Occurs after a new module is successfully created, before + * creating any of its interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_create); + +/* + * Occurs after the last reference to a module has been dropped. + */ +DEFINE_MODULE_EVENT(gb_module_release); + +/* + * Occurs after a module is successfully created, before registering + * any of its interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_add); + +/* + * Occurs when a module is deleted, before deregistering its + * interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_del); + +#undef DEFINE_MODULE_EVENT + DECLARE_EVENT_CLASS(gb_host_device, TP_PROTO(struct gb_host_device *hd), diff --git a/drivers/staging/greybus/module.c b/drivers/staging/greybus/module.c index ea58954..c56b988 100644 --- a/drivers/staging/greybus/module.c +++ b/drivers/staging/greybus/module.c @@ -9,6 +9,7 @@ #include "greybus.h" +#include "greybus_trace.h" static ssize_t eject_store(struct device *dev, struct device_attribute *attr, @@ -77,6 +78,8 @@ static void gb_module_release(struct device *dev) { struct gb_module *module = to_gb_module(dev); + trace_gb_module_release(module); + kfree(module); } @@ -109,6 +112,8 @@ struct gb_module *gb_module_create(struct gb_host_device *hd, u8 module_id, device_initialize(&module->dev); dev_set_name(&module->dev, "%d-%u", hd->bus_id, module_id); + trace_gb_module_create(module); + for (i = 0; i < num_interfaces; ++i) { intf = gb_interface_create(module, module_id + i); if (!intf) { @@ -215,6 +220,8 @@ int gb_module_add(struct gb_module *module) return ret; } + trace_gb_module_add(module); + for (i = 0; i < module->num_interfaces; ++i) gb_module_register_interface(module->interfaces[i]); @@ -229,6 +236,8 @@ void gb_module_del(struct gb_module *module) for (i = 0; i < module->num_interfaces; ++i) gb_module_deregister_interface(module->interfaces[i]); + trace_gb_module_del(module); + device_del(&module->dev); } |