1config STM 2 tristate "System Trace Module devices" 3 select CONFIGFS_FS 4 select SRCU 5 help 6 A System Trace Module (STM) is a device exporting data in System 7 Trace Protocol (STP) format as defined by MIPI STP standards. 8 Examples of such devices are Intel(R) Trace Hub and Coresight STM. 9 10 Say Y here to enable System Trace Module device support. 11 12if STM 13 14config STM_DUMMY 15 tristate "Dummy STM driver" 16 help 17 This is a simple dummy device that pretends to be an stm device 18 and discards your data. Use for stm class testing. 19 20 If you don't know what this is, say N. 21 22config STM_SOURCE_CONSOLE 23 tristate "Kernel console over STM devices" 24 help 25 This is a kernel space trace source that sends kernel log 26 messages to trace hosts over STM devices. 27 28 If you want to send kernel console messages over STM devices, 29 say Y. 30 31config STM_SOURCE_HEARTBEAT 32 tristate "Heartbeat over STM devices" 33 help 34 This is a kernel space trace source that sends periodic 35 heartbeat messages to trace hosts over STM devices. It is 36 also useful for testing stm class drivers and the stm class 37 framework itself. 38 39 If you want to send heartbeat messages over STM devices, 40 say Y. 41 42config STM_SOURCE_FTRACE 43 tristate "Copy the output from kernel Ftrace to STM engine" 44 depends on FUNCTION_TRACER 45 help 46 This option can be used to copy the output from kernel Ftrace 47 to STM engine. Enabling this option will introduce a slight 48 timing effect. 49 50 If you want to send kernel Ftrace messages over STM devices, 51 say Y. 52 53endif 54