1# SPDX-License-Identifier: GPL-2.0-only
 2config STM
 3	tristate "System Trace Module devices"
 4	select CONFIGFS_FS
 5	select SRCU
 6	help
 7	  A System Trace Module (STM) is a device exporting data in System
 8	  Trace Protocol (STP) format as defined by MIPI STP standards.
 9	  Examples of such devices are Intel(R) Trace Hub and Coresight STM.
10
11	  Say Y here to enable System Trace Module device support.
12
13if STM
14
15config STM_PROTO_BASIC
16	tristate "Basic STM framing protocol driver"
17	default CONFIG_STM
18	help
19	  This is a simple framing protocol for sending data over STM
20	  devices. This was the protocol that the STM framework used
21	  exclusively until the MIPI SyS-T support was added. Use this
22	  driver for compatibility with your existing STM setup.
23
24	  The receiving side only needs to be able to decode the MIPI
25	  STP protocol in order to extract the data.
26
27	  If you want to be able to use the basic protocol or want the
28	  backwards compatibility for your existing setup, say Y.
29
30config STM_PROTO_SYS_T
31	tristate "MIPI SyS-T STM framing protocol driver"
32	default CONFIG_STM
33	help
34	  This is an implementation of MIPI SyS-T protocol to be used
35	  over the STP transport. In addition to the data payload, it
36	  also carries additional metadata for time correlation, better
37	  means of trace source identification, etc.
38
39	  The receiving side must be able to decode this protocol in
40	  addition to the MIPI STP, in order to extract the data.
41
42	  If you don't know what this is, say N.
43
44config STM_DUMMY
45	tristate "Dummy STM driver"
46	help
47	  This is a simple dummy device that pretends to be an stm device
48	  and discards your data. Use for stm class testing.
49
50	  If you don't know what this is, say N.
51
52config STM_SOURCE_CONSOLE
53	tristate "Kernel console over STM devices"
54	help
55	  This is a kernel space trace source that sends kernel log
56	  messages to trace hosts over STM devices.
57
58	  If you want to send kernel console messages over STM devices,
59	  say Y.
60
61config STM_SOURCE_HEARTBEAT
62	tristate "Heartbeat over STM devices"
63	help
64	  This is a kernel space trace source that sends periodic
65	  heartbeat messages to trace hosts over STM devices. It is
66	  also useful for testing stm class drivers and the stm class
67	  framework itself.
68
69	  If you want to send heartbeat messages over STM devices,
70	  say Y.
71
72config STM_SOURCE_FTRACE
73	tristate "Copy the output from kernel Ftrace to STM engine"
74	depends on FUNCTION_TRACER
75	help
76	  This option can be used to copy the output from kernel Ftrace
77	  to STM engine. Enabling this option will introduce a slight
78	  timing effect.
79
80	  If you want to send kernel Ftrace messages over STM devices,
81	  say Y.
82
83endif

 
 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
42endif