ftrace: trace faster

[linux-2.6] / kernel / trace / Kconfig

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index cad9db1dee02386c0a7c989a03b84b3d341648e5..f3005717bcd0ca3d7b4638ea92aedc8194dce636 100644 (file)
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -10,10 +10,11 @@ config TRACER_MAX_TRACE
 config TRACING
        bool
        select DEBUG_FS
+       select STACKTRACE
 
 config FTRACE
        bool "Kernel Function Tracer"
-       depends on DEBUG_KERNEL && HAVE_FTRACE
+       depends on HAVE_FTRACE
        select FRAME_POINTER
        select TRACING
        select CONTEXT_SWITCH_TRACER
@@ -31,6 +32,7 @@ config IRQSOFF_TRACER
        default n
        depends on TRACE_IRQFLAGS_SUPPORT
        depends on GENERIC_TIME
+       depends on HAVE_FTRACE
        select TRACE_IRQFLAGS
        select TRACING
        select TRACER_MAX_TRACE
@@ -53,6 +55,7 @@ config PREEMPT_TRACER
        default n
        depends on GENERIC_TIME
        depends on PREEMPT
+       depends on HAVE_FTRACE
        select TRACING
        select TRACER_MAX_TRACE
        help
@@ -71,7 +74,7 @@ config PREEMPT_TRACER
 
 config SCHED_TRACER
        bool "Scheduling Latency Tracer"
-       depends on DEBUG_KERNEL
+       depends on HAVE_FTRACE
        select TRACING
        select CONTEXT_SWITCH_TRACER
        select TRACER_MAX_TRACE
@@ -81,7 +84,7 @@ config SCHED_TRACER
 
 config CONTEXT_SWITCH_TRACER
        bool "Trace process context switches"
-       depends on DEBUG_KERNEL
+       depends on HAVE_FTRACE
        select TRACING
        select MARKERS
        help
@@ -105,3 +108,16 @@ config DYNAMIC_FTRACE
         wakes up once a second and checks to see if any ftrace calls
         were made. If so, it runs stop_machine (stops all CPUS)
         and modifies the code to jump over the call to ftrace.
+
+config FTRACE_SELFTEST
+       bool
+
+config FTRACE_STARTUP_TEST
+       bool "Perform a startup test on ftrace"
+       depends on TRACING
+       select FTRACE_SELFTEST
+       help
+         This option performs a series of startup tests on ftrace. On bootup
+         a series of tests are made to verify that the tracer is
+         functioning properly. It will do tests on all the configured
+         tracers of ftrace.