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authorSteven Rostedt <srostedt@redhat.com>2009-02-24 10:21:36 -0500
committerSteven Rostedt <srostedt@redhat.com>2009-02-24 21:54:05 -0500
commitb77e38aa240c3bd9c55c98b9f7c81541e042eae5 (patch)
treebbb40993e76edc52d2cae1040b941ba4e4d2f965 /kernel/trace/Kconfig
parent7c37730cd31ddb2d3a1da142af9b18c29b8c433b (diff)
tracing: add event trace infrastructure
This patch creates the event tracing infrastructure of ftrace. It will create the files: /debug/tracing/available_events /debug/tracing/set_event The available_events will list the trace points that have been registered with the event tracer. set_events will allow the user to enable or disable an event hook. example: # echo sched_wakeup > /debug/tracing/set_event Will enable the sched_wakeup event (if it is registered). # echo "!sched_wakeup" >> /debug/tracing/set_event Will disable the sched_wakeup event (and only that event). # echo > /debug/tracing/set_event Will disable all events (notice the '>') # cat /debug/tracing/available_events > /debug/tracing/set_event Will enable all registered event hooks. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 07877f4b523..999c6a2485d 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -159,6 +159,15 @@ config CONTEXT_SWITCH_TRACER
This tracer gets called from the context switch and records
all switching of tasks.
+config EVENT_TRACER
+ bool "Trace various events in the kernel"
+ depends on DEBUG_KERNEL
+ select TRACING
+ help
+ This tracer hooks to various trace points in the kernel
+ allowing the user to pick and choose which trace point they
+ want to trace.
+
config BOOT_TRACER
bool "Trace boot initcalls"
depends on DEBUG_KERNEL