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_PROTO_BASIC 15 tristate "Basic STM framing protocol driver" 16 default CONFIG_STM 17 help 18 This is a simple framing protocol for sending data over STM 19 devices. This was the protocol that the STM framework used 20 exclusively until the MIPI SyS-T support was added. Use this 21 driver for compatibility with your existing STM setup. 22 23 The receiving side only needs to be able to decode the MIPI 24 STP protocol in order to extract the data. 25 26 If you want to be able to use the basic protocol or want the 27 backwards compatibility for your existing setup, say Y. 28 29config STM_DUMMY 30 tristate "Dummy STM driver" 31 help 32 This is a simple dummy device that pretends to be an stm device 33 and discards your data. Use for stm class testing. 34 35 If you don't know what this is, say N. 36 37config STM_SOURCE_CONSOLE 38 tristate "Kernel console over STM devices" 39 help 40 This is a kernel space trace source that sends kernel log 41 messages to trace hosts over STM devices. 42 43 If you want to send kernel console messages over STM devices, 44 say Y. 45 46config STM_SOURCE_HEARTBEAT 47 tristate "Heartbeat over STM devices" 48 help 49 This is a kernel space trace source that sends periodic 50 heartbeat messages to trace hosts over STM devices. It is 51 also useful for testing stm class drivers and the stm class 52 framework itself. 53 54 If you want to send heartbeat messages over STM devices, 55 say Y. 56 57config STM_SOURCE_FTRACE 58 tristate "Copy the output from kernel Ftrace to STM engine" 59 depends on FUNCTION_TRACER 60 help 61 This option can be used to copy the output from kernel Ftrace 62 to STM engine. Enabling this option will introduce a slight 63 timing effect. 64 65 If you want to send kernel Ftrace messages over STM devices, 66 say Y. 67 68endif 69