Steven Rostedt wrote:
Index: linux-mcount.git/lib/tracing/Kconfig
===================================================================
--- linux-mcount.git.orig/lib/tracing/Kconfig 2008-01-30 15:18:18.000000000
-0500
+++ linux-mcount.git/lib/tracing/Kconfig 2008-01-30 15:32:33.000000000
-0500
@@ -23,3 +23,12 @@ config FUNCTION_TRACER
insert a call to an architecture specific __mcount routine,
that the debugging mechanism using this facility will hook by
providing a set of inline routines.
+
+config CONTEXT_SWITCH_TRACER
+ bool "Trace process context switches"
+ depends on DEBUG_KERNEL
+ select TRACING
+ help
+ This tracer hooks into the context switch and records
+ all switching of tasks.
+
This needs a "select MARKERS" or it doesn't compile.
My config has:
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_TRACE_IRQFLAGS=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_FUNCTION_TRACER=y
# CONFIG_EVENT_TRACER is not set
# CONFIG_WAKEUP_TRACER is not set
CONFIG_CONTEXT_SWITCH_TRACER=y
-- Tim
=============================
Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Corporation of America
=============================
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