Merge branch 'linus' into irq/threaded

Conflicts:
	include/linux/irq.h
	kernel/irq/handle.c

1 files changed, 112 insertions, 20 deletions

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 34e707e5ab8..2246141bda4 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -9,6 +9,9 @@ config USER_STACKTRACE_SUPPORT
 config NOP_TRACER
         bool
 
+config HAVE_FTRACE_NMI_ENTER
+        bool
+
 config HAVE_FUNCTION_TRACER
         bool
 
@@ -31,12 +34,20 @@ config HAVE_FTRACE_MCOUNT_RECORD
 config HAVE_HW_BRANCH_TRACER
         bool
 
+config HAVE_FTRACE_SYSCALLS
+        bool
+
 config TRACER_MAX_TRACE
         bool
 
 config RING_BUFFER
         bool
 
+config FTRACE_NMI_ENTER
+       bool
+       depends on HAVE_FTRACE_NMI_ENTER
+       default y
+
 config TRACING
         bool
         select DEBUG_FS
@@ -44,13 +55,29 @@ config TRACING
         select STACKTRACE if STACKTRACE_SUPPORT
         select TRACEPOINTS
         select NOP_TRACER
+        select BINARY_PRINTF
+
+#
+# Minimum requirements an architecture has to meet for us to
+# be able to offer generic tracing facilities:
+#
+config TRACING_SUPPORT
+        bool
+        # PPC32 has no irqflags tracing support, but it can use most of the
+        # tracers anyway, they were tested to build and work. Note that new
+        # exceptions to this list aren't welcomed, better implement the
+        # irqflags tracing for your architecture.
+        depends on TRACE_IRQFLAGS_SUPPORT || PPC32
+        depends on STACKTRACE_SUPPORT
+        default y
+
+if TRACING_SUPPORT
 
 menu "Tracers"
 
 config FUNCTION_TRACER
         bool "Kernel Function Tracer"
         depends on HAVE_FUNCTION_TRACER
-        depends on DEBUG_KERNEL
         select FRAME_POINTER
         select KALLSYMS
         select TRACING
@@ -72,18 +99,16 @@ config FUNCTION_GRAPH_TRACER
         help
           Enable the kernel to trace a function at both its return
           and its entry.
-          It's first purpose is to trace the duration of functions and
-          draw a call graph for each thread with some informations like
-          the return value.
-          This is done by setting the current return address on the current
-          task structure into a stack of calls.
+          Its first purpose is to trace the duration of functions and
+          draw a call graph for each thread with some information like
+          the return value. This is done by setting the current return 
+          address on the current task structure into a stack of calls.
 
 config IRQSOFF_TRACER
         bool "Interrupts-off Latency Tracer"
         default n
         depends on TRACE_IRQFLAGS_SUPPORT
         depends on GENERIC_TIME
-        depends on DEBUG_KERNEL
         select TRACE_IRQFLAGS
         select TRACING
         select TRACER_MAX_TRACE
@@ -106,7 +131,6 @@ config PREEMPT_TRACER
         default n
         depends on GENERIC_TIME
         depends on PREEMPT
-        depends on DEBUG_KERNEL
         select TRACING
         select TRACER_MAX_TRACE
         help
@@ -127,13 +151,13 @@ config SYSPROF_TRACER
         bool "Sysprof Tracer"
         depends on X86
         select TRACING
+        select CONTEXT_SWITCH_TRACER
         help
           This tracer provides the trace needed by the 'Sysprof' userspace
           tool.
 
 config SCHED_TRACER
         bool "Scheduling Latency Tracer"
-        depends on DEBUG_KERNEL
         select TRACING
         select CONTEXT_SWITCH_TRACER
         select TRACER_MAX_TRACE
@@ -143,16 +167,30 @@ config SCHED_TRACER
 
 config CONTEXT_SWITCH_TRACER
         bool "Trace process context switches"
-        depends on DEBUG_KERNEL
         select TRACING
         select MARKERS
         help
           This tracer gets called from the context switch and records
           all switching of tasks.
 
+config EVENT_TRACER
+        bool "Trace various events in the 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 FTRACE_SYSCALLS
+        bool "Trace syscalls"
+        depends on HAVE_FTRACE_SYSCALLS
+        select TRACING
+        select KALLSYMS
+        help
+          Basic tracer to catch the syscall entry and exit events.
+
 config BOOT_TRACER
         bool "Trace boot initcalls"
-        depends on DEBUG_KERNEL
         select TRACING
         select CONTEXT_SWITCH_TRACER
         help
@@ -165,13 +203,11 @@ config BOOT_TRACER
           representation of the delays during initcalls - but the raw
           /debug/tracing/trace text output is readable too.
 
-          ( Note that tracing self tests can't be enabled if this tracer is
-            selected, because the self-tests are an initcall as well and that
-            would invalidate the boot trace. )
+          You must pass in ftrace=initcall to the kernel command line
+          to enable this on bootup.
 
 config TRACE_BRANCH_PROFILING
         bool "Trace likely/unlikely profiler"
-        depends on DEBUG_KERNEL
         select TRACING
         help
           This tracer profiles all the the likely and unlikely macros
@@ -224,7 +260,6 @@ config BRANCH_TRACER
 
 config POWER_TRACER
         bool "Trace power consumption behavior"
-        depends on DEBUG_KERNEL
         depends on X86
         select TRACING
         help
@@ -236,7 +271,6 @@ config POWER_TRACER
 config STACK_TRACER
         bool "Trace max stack"
         depends on HAVE_FUNCTION_TRACER
-        depends on DEBUG_KERNEL
         select FUNCTION_TRACER