1 files changed, 36 insertions, 7 deletions

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 019f380fd764..b416512ad17f 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -11,12 +11,18 @@ config NOP_TRACER
 
 config HAVE_FTRACE_NMI_ENTER
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_FUNCTION_TRACER
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_FUNCTION_GRAPH_TRACER
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_FUNCTION_GRAPH_FP_TEST
         bool
@@ -28,21 +34,25 @@ config HAVE_FUNCTION_GRAPH_FP_TEST
 config HAVE_FUNCTION_TRACE_MCOUNT_TEST
         bool
         help
-         This gets selected when the arch tests the function_trace_stop
-         variable at the mcount call site. Otherwise, this variable
-         is tested by the called function.
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_DYNAMIC_FTRACE
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_FTRACE_MCOUNT_RECORD
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config HAVE_HW_BRANCH_TRACER
         bool
 
-config HAVE_FTRACE_SYSCALLS
+config HAVE_SYSCALL_TRACEPOINTS
         bool
+        help
+          See Documentation/trace/ftrace-implementation.txt
 
 config TRACER_MAX_TRACE
         bool
@@ -60,15 +70,20 @@ config EVENT_TRACING
         bool
 
 config CONTEXT_SWITCH_TRACER
-        select MARKERS
         bool
 
+config RING_BUFFER_ALLOW_SWAP
+        bool
+        help
+         Allow the use of ring_buffer_swap_cpu.
+         Adds a very slight overhead to tracing when enabled.
+
 # All tracer options should select GENERIC_TRACER. For those options that are
 # enabled by all tracers (context switch and event tracer) they select TRACING.
 # This allows those options to appear when no other tracer is selected. But the
 # options do not appear when something else selects it. We need the two options
 # GENERIC_TRACER and TRACING to avoid circular dependencies to accomplish the
-# hidding of the automatic options options.
+# hidding of the automatic options.
 
 config TRACING
         bool
@@ -147,6 +162,7 @@ config IRQSOFF_TRACER
         select TRACE_IRQFLAGS
         select GENERIC_TRACER
         select TRACER_MAX_TRACE
+        select RING_BUFFER_ALLOW_SWAP
         help
           This option measures the time spent in irqs-off critical
           sections, with microsecond accuracy.
@@ -168,6 +184,7 @@ config PREEMPT_TRACER
         depends on PREEMPT
         select GENERIC_TRACER
         select TRACER_MAX_TRACE
+        select RING_BUFFER_ALLOW_SWAP
         help
           This option measures the time spent in preemption off critical
           sections, with microsecond accuracy.
@@ -211,7 +228,7 @@ config ENABLE_DEFAULT_TRACERS
 
 config FTRACE_SYSCALLS
         bool "Trace syscalls"
-        depends on HAVE_FTRACE_SYSCALLS
+        depends on HAVE_SYSCALL_TRACEPOINTS
         select GENERIC_TRACER
         select KALLSYMS
         help
@@ -462,6 +479,18 @@ config FTRACE_STARTUP_TEST
           functioning properly. It will do tests on all the configured
           tracers of ftrace.
 
+config EVENT_TRACE_TEST_SYSCALLS
+        bool "Run selftest on syscall events"
+        depends on FTRACE_STARTUP_TEST
+        help
+         This option will also enable testing every syscall event.
+         It only enables the event and disables it and runs various loads
+         with the event enabled. This adds a bit more time for kernel boot
+         up since it runs this on every system call defined.
+
+         TBD - enable a way to actually call the syscalls as we test their
+               events
+
 config MMIOTRACE
         bool "Memory mapped IO tracing"
         depends on HAVE_MMIOTRACE_SUPPORT && PCI