diff options
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r-- | kernel/trace/Kconfig | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 1cb3e1f616af..e0cea282e0c5 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig | |||
@@ -1,11 +1,12 @@ | |||
1 | # | 1 | # |
2 | # Architectures that offer an FTRACE implementation should select HAVE_FTRACE: | 2 | # Architectures that offer an FUNCTION_TRACER implementation should |
3 | # select HAVE_FUNCTION_TRACER: | ||
3 | # | 4 | # |
4 | 5 | ||
5 | config NOP_TRACER | 6 | config NOP_TRACER |
6 | bool | 7 | bool |
7 | 8 | ||
8 | config HAVE_FTRACE | 9 | config HAVE_FUNCTION_TRACER |
9 | bool | 10 | bool |
10 | select NOP_TRACER | 11 | select NOP_TRACER |
11 | 12 | ||
@@ -28,9 +29,11 @@ config TRACING | |||
28 | select STACKTRACE | 29 | select STACKTRACE |
29 | select TRACEPOINTS | 30 | select TRACEPOINTS |
30 | 31 | ||
31 | config FTRACE | 32 | menu "Tracers" |
33 | |||
34 | config FUNCTION_TRACER | ||
32 | bool "Kernel Function Tracer" | 35 | bool "Kernel Function Tracer" |
33 | depends on HAVE_FTRACE | 36 | depends on HAVE_FUNCTION_TRACER |
34 | depends on DEBUG_KERNEL | 37 | depends on DEBUG_KERNEL |
35 | select FRAME_POINTER | 38 | select FRAME_POINTER |
36 | select TRACING | 39 | select TRACING |
@@ -49,7 +52,6 @@ config IRQSOFF_TRACER | |||
49 | default n | 52 | default n |
50 | depends on TRACE_IRQFLAGS_SUPPORT | 53 | depends on TRACE_IRQFLAGS_SUPPORT |
51 | depends on GENERIC_TIME | 54 | depends on GENERIC_TIME |
52 | depends on HAVE_FTRACE | ||
53 | depends on DEBUG_KERNEL | 55 | depends on DEBUG_KERNEL |
54 | select TRACE_IRQFLAGS | 56 | select TRACE_IRQFLAGS |
55 | select TRACING | 57 | select TRACING |
@@ -73,7 +75,6 @@ config PREEMPT_TRACER | |||
73 | default n | 75 | default n |
74 | depends on GENERIC_TIME | 76 | depends on GENERIC_TIME |
75 | depends on PREEMPT | 77 | depends on PREEMPT |
76 | depends on HAVE_FTRACE | ||
77 | depends on DEBUG_KERNEL | 78 | depends on DEBUG_KERNEL |
78 | select TRACING | 79 | select TRACING |
79 | select TRACER_MAX_TRACE | 80 | select TRACER_MAX_TRACE |
@@ -101,7 +102,6 @@ config SYSPROF_TRACER | |||
101 | 102 | ||
102 | config SCHED_TRACER | 103 | config SCHED_TRACER |
103 | bool "Scheduling Latency Tracer" | 104 | bool "Scheduling Latency Tracer" |
104 | depends on HAVE_FTRACE | ||
105 | depends on DEBUG_KERNEL | 105 | depends on DEBUG_KERNEL |
106 | select TRACING | 106 | select TRACING |
107 | select CONTEXT_SWITCH_TRACER | 107 | select CONTEXT_SWITCH_TRACER |
@@ -112,7 +112,6 @@ config SCHED_TRACER | |||
112 | 112 | ||
113 | config CONTEXT_SWITCH_TRACER | 113 | config CONTEXT_SWITCH_TRACER |
114 | bool "Trace process context switches" | 114 | bool "Trace process context switches" |
115 | depends on HAVE_FTRACE | ||
116 | depends on DEBUG_KERNEL | 115 | depends on DEBUG_KERNEL |
117 | select TRACING | 116 | select TRACING |
118 | select MARKERS | 117 | select MARKERS |
@@ -122,9 +121,9 @@ config CONTEXT_SWITCH_TRACER | |||
122 | 121 | ||
123 | config BOOT_TRACER | 122 | config BOOT_TRACER |
124 | bool "Trace boot initcalls" | 123 | bool "Trace boot initcalls" |
125 | depends on HAVE_FTRACE | ||
126 | depends on DEBUG_KERNEL | 124 | depends on DEBUG_KERNEL |
127 | select TRACING | 125 | select TRACING |
126 | select CONTEXT_SWITCH_TRACER | ||
128 | help | 127 | help |
129 | This tracer helps developers to optimize boot times: it records | 128 | This tracer helps developers to optimize boot times: it records |
130 | the timings of the initcalls and traces key events and the identity | 129 | the timings of the initcalls and traces key events and the identity |
@@ -141,9 +140,9 @@ config BOOT_TRACER | |||
141 | 140 | ||
142 | config STACK_TRACER | 141 | config STACK_TRACER |
143 | bool "Trace max stack" | 142 | bool "Trace max stack" |
144 | depends on HAVE_FTRACE | 143 | depends on HAVE_FUNCTION_TRACER |
145 | depends on DEBUG_KERNEL | 144 | depends on DEBUG_KERNEL |
146 | select FTRACE | 145 | select FUNCTION_TRACER |
147 | select STACKTRACE | 146 | select STACKTRACE |
148 | help | 147 | help |
149 | This special tracer records the maximum stack footprint of the | 148 | This special tracer records the maximum stack footprint of the |
@@ -160,7 +159,7 @@ config STACK_TRACER | |||
160 | 159 | ||
161 | config DYNAMIC_FTRACE | 160 | config DYNAMIC_FTRACE |
162 | bool "enable/disable ftrace tracepoints dynamically" | 161 | bool "enable/disable ftrace tracepoints dynamically" |
163 | depends on FTRACE | 162 | depends on FUNCTION_TRACER |
164 | depends on HAVE_DYNAMIC_FTRACE | 163 | depends on HAVE_DYNAMIC_FTRACE |
165 | depends on DEBUG_KERNEL | 164 | depends on DEBUG_KERNEL |
166 | default y | 165 | default y |
@@ -170,7 +169,7 @@ config DYNAMIC_FTRACE | |||
170 | with a No-Op instruction) as they are called. A table is | 169 | with a No-Op instruction) as they are called. A table is |
171 | created to dynamically enable them again. | 170 | created to dynamically enable them again. |
172 | 171 | ||
173 | This way a CONFIG_FTRACE kernel is slightly larger, but otherwise | 172 | This way a CONFIG_FUNCTION_TRACER kernel is slightly larger, but otherwise |
174 | has native performance as long as no tracing is active. | 173 | has native performance as long as no tracing is active. |
175 | 174 | ||
176 | The changes to the code are done by a kernel thread that | 175 | The changes to the code are done by a kernel thread that |
@@ -195,3 +194,5 @@ config FTRACE_STARTUP_TEST | |||
195 | a series of tests are made to verify that the tracer is | 194 | a series of tests are made to verify that the tracer is |
196 | functioning properly. It will do tests on all the configured | 195 | functioning properly. It will do tests on all the configured |
197 | tracers of ftrace. | 196 | tracers of ftrace. |
197 | |||
198 | endmenu | ||