Merge branch 'tracing/ftrace' into tracing/urgent

40 files changed, 113 insertions, 68 deletions

diff --git a/Makefile b/Makefile
index 16e3fbb968a8..b7eb70b13cad 100644
--- a/Makefile
+++ b/Makefile
@@ -536,7 +536,7 @@ KBUILD_CFLAGS	+= -g
 KBUILD_AFLAGS   += -gdwarf-2
 endif
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 KBUILD_CFLAGS   += -pg
 endif
 
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index df39d20f7425..600733426ae0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -16,8 +16,8 @@ config ARM
         select HAVE_ARCH_KGDB
         select HAVE_KPROBES if (!XIP_KERNEL)
         select HAVE_KRETPROBES if (HAVE_KPROBES)
-        select HAVE_FTRACE if (!XIP_KERNEL)
-        select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
+        select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
+        select HAVE_DYNAMIC_FTRACE if (HAVE_FUNCTION_TRACER)
         select HAVE_GENERIC_DMA_COHERENT
         help
           The ARM series is a line of low-power-consumption RISC chip designs
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 7a03f2007882..c47f2a3f8f8f 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -70,7 +70,7 @@ SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
 targets       := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
                  head.o misc.o $(OBJS)
 
-ifeq ($(CONFIG_FTRACE),y)
+ifeq ($(CONFIG_FUNCTION_TRACER),y)
 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
 endif
diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
index 584ef9a8e5a5..39c8bc1a006a 100644
--- a/arch/arm/include/asm/ftrace.h
+++ b/arch/arm/include/asm/ftrace.h
@@ -1,7 +1,7 @@
 #ifndef _ASM_ARM_FTRACE
 #define _ASM_ARM_FTRACE
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #define MCOUNT_ADDR             ((long)(mcount))
 #define MCOUNT_INSN_SIZE        4 /* sizeof mcount call */
 
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 2357b1cf1cf9..c74f766ffc12 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -183,6 +183,6 @@ EXPORT_SYMBOL(_find_next_bit_be);
 
 EXPORT_SYMBOL(copy_page);
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 EXPORT_SYMBOL(mcount);
 #endif
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 3aa14dcc5bab..06269ea375c5 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -101,7 +101,7 @@ ENDPROC(ret_from_fork)
 #undef CALL
 #define CALL(x) .long x
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 ENTRY(mcount)
         stmdb sp!, {r0-r3, lr}
@@ -149,7 +149,7 @@ trace:
 ftrace_stub:
         mov pc, lr
 
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 /*=============================================================================
  * SWI handler
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9391199d9e77..441ce06174ff 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -112,7 +112,7 @@ config PPC
         bool
         default y
         select HAVE_DYNAMIC_FTRACE
-        select HAVE_FTRACE
+        select HAVE_FUNCTION_TRACER
         select ARCH_WANT_OPTIONAL_GPIOLIB
         select HAVE_IDE
         select HAVE_IOREMAP_PROT
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 24dd1a37f8fb..1f0667069940 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -122,7 +122,7 @@ KBUILD_CFLAGS		+= -mcpu=powerpc
 endif
 
 # Work around a gcc code-gen bug with -fno-omit-frame-pointer.
-ifeq ($(CONFIG_FTRACE),y)
+ifeq ($(CONFIG_FUNCTION_TRACER),y)
 KBUILD_CFLAGS           += -mno-sched-epilog
 endif
 
diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index de921326cca8..b298f7a631e6 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -1,7 +1,7 @@
 #ifndef _ASM_POWERPC_FTRACE
 #define _ASM_POWERPC_FTRACE
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #define MCOUNT_ADDR             ((long)(_mcount))
 #define MCOUNT_INSN_SIZE        4 /* sizeof mcount call */
 
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fdb58253fa5b..92673b43858d 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -12,7 +12,7 @@ CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o          += -fPIC
 endif
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 # Do not trace early boot code
 CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog
 CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 1cbbf7033641..7ecc0d1855c3 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -1158,7 +1158,7 @@ machine_check_in_rtas:
 
 #endif /* CONFIG_PPC_RTAS */
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 _GLOBAL(mcount)
 _GLOBAL(_mcount)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index fd8b4bae9b04..e6d52845854f 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -884,7 +884,7 @@ _GLOBAL(enter_prom)
         mtlr    r0
         blr
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 _GLOBAL(mcount)
 _GLOBAL(_mcount)
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 8edc2359c419..260089dccfb0 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -68,7 +68,7 @@ EXPORT_SYMBOL(single_step_exception);
 EXPORT_SYMBOL(sys_sigreturn);
 #endif
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 EXPORT_SYMBOL(_mcount);
 #endif
 
diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index be60d64be7ad..50f169392551 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -1,6 +1,6 @@
 CFLAGS_bootx_init.o             += -fPIC
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 # Do not trace early boot code
 CFLAGS_REMOVE_bootx_init.o = -pg -mno-sched-epilog
 endif
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 035b15af90d8..824f6122e1a5 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -12,7 +12,7 @@ config SPARC64
         bool
         default y
         select HAVE_DYNAMIC_FTRACE
-        select HAVE_FTRACE
+        select HAVE_FUNCTION_TRACER
         select HAVE_IDE
         select HAVE_LMB
         select HAVE_ARCH_KGDB
diff --git a/arch/sparc64/Kconfig.debug b/arch/sparc64/Kconfig.debug
index d6d32d178fc8..c40515c06690 100644
--- a/arch/sparc64/Kconfig.debug
+++ b/arch/sparc64/Kconfig.debug
@@ -33,7 +33,7 @@ config DEBUG_PAGEALLOC
 
 config MCOUNT
         bool
-        depends on STACK_DEBUG || FTRACE
+        depends on STACK_DEBUG || FUNCTION_TRACER
         default y
 
 config FRAME_POINTER
diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S
index fad90ddb3a28..7ce9c65f3592 100644
--- a/arch/sparc64/lib/mcount.S
+++ b/arch/sparc64/lib/mcount.S
@@ -93,7 +93,7 @@ mcount:
          nop
 1:
 #endif
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
         mov             %o7, %o0
         .globl          mcount_call
@@ -119,7 +119,7 @@ mcount_call:
         .size           _mcount,.-_mcount
         .size           mcount,.-mcount
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
         .globl          ftrace_stub
         .type           ftrace_stub,#function
 ftrace_stub:
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5b9b12321ad1..100325c8605e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -28,7 +28,7 @@ config X86
         select HAVE_KRETPROBES
         select HAVE_FTRACE_MCOUNT_RECORD
         select HAVE_DYNAMIC_FTRACE
-        select HAVE_FTRACE
+        select HAVE_FUNCTION_TRACER
         select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
         select HAVE_ARCH_KGDB if !X86_VOYAGER
         select HAVE_ARCH_TRACEHOOK
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index d7e5a58ee22f..f1283fe60723 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y                := head_$(BITS).o head$(BITS).o head.o init_task.o vmlinu
 
 CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 # Do not profile debug and lowlevel utilities
 CFLAGS_REMOVE_tsc.o = -pg
 CFLAGS_REMOVE_rtc.o = -pg
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index c356423a6026..008cc17521c3 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1149,7 +1149,7 @@ ENDPROC(xen_failsafe_callback)
 
 #endif  /* CONFIG_XEN */
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 
 ENTRY(mcount)
@@ -1204,7 +1204,7 @@ trace:
         jmp ftrace_stub
 END(mcount)
 #endif /* CONFIG_DYNAMIC_FTRACE */
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 .section .rodata,"a"
 #include "syscall_table_32.S"
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 09e7145484c5..b86f332c96a6 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -61,7 +61,7 @@
 
         .code64
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #ifdef CONFIG_DYNAMIC_FTRACE
 ENTRY(mcount)
         retq
@@ -138,7 +138,7 @@ trace:
         jmp ftrace_stub
 END(mcount)
 #endif /* CONFIG_DYNAMIC_FTRACE */
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 #ifndef CONFIG_PREEMPT
 #define retint_kernel retint_restore_args
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index d073d981a730..8821ceabf51d 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -62,6 +62,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
                    unsigned char *new_code)
 {
         unsigned char replaced[MCOUNT_INSN_SIZE];
+        int ret;
 
         /*
          * Note: Due to modules and __init, code can
@@ -77,8 +78,9 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
         if (memcmp(replaced, old_code, MCOUNT_INSN_SIZE) != 0)
                 return 2;
 
-        WARN_ON_ONCE(__copy_to_user_inatomic((char __user *)ip, new_code,
-                                    MCOUNT_INSN_SIZE));
+        ret = __copy_to_user_inatomic((char __user *)ip, new_code,
+                                        MCOUNT_INSN_SIZE);
+        WARN_ON_ONCE(ret);
 
         sync_core();
 
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index dd7ebee446af..43cec6bdda63 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -5,7 +5,7 @@
 #include <asm/desc.h>
 #include <asm/ftrace.h>
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 /* mcount is defined in assembly */
 EXPORT_SYMBOL(mcount);
 #endif
diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
index b545f371b5f5..695e426aa354 100644
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -12,7 +12,7 @@
 #include <asm/desc.h>
 #include <asm/ftrace.h>
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 /* mcount is defined in assembly */
 EXPORT_SYMBOL(mcount);
 #endif
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 313947940a1a..6dcefba7836f 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -1,4 +1,4 @@
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 # Do not profile debug and lowlevel utilities
 CFLAGS_REMOVE_spinlock.o = -pg
 CFLAGS_REMOVE_time.o = -pg
diff --git a/include/asm-x86/ftrace.h b/include/asm-x86/ftrace.h
index 1bb6f9bbe1ab..233bb9b869c0 100644
--- a/include/asm-x86/ftrace.h
+++ b/include/asm-x86/ftrace.h
@@ -1,7 +1,7 @@
 #ifndef ASM_X86__FTRACE_H
 #define ASM_X86__FTRACE_H
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 #define MCOUNT_ADDR             ((long)(mcount))
 #define MCOUNT_INSN_SIZE        5 /* sizeof mcount call */
 
@@ -19,6 +19,6 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr)
 }
 #endif
 
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 #endif /* ASM_X86__FTRACE_H */
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index a3d46151be19..0e9529589151 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -8,7 +8,7 @@
 #include <linux/types.h>
 #include <linux/kallsyms.h>
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 
 extern int ftrace_enabled;
 extern int
@@ -36,12 +36,12 @@ void clear_ftrace_function(void);
 
 extern void ftrace_stub(unsigned long a0, unsigned long a1);
 
-#else /* !CONFIG_FTRACE */
+#else /* !CONFIG_FUNCTION_TRACER */
 # define register_ftrace_function(ops) do { } while (0)
 # define unregister_ftrace_function(ops) do { } while (0)
 # define clear_ftrace_function(ops) do { } while (0)
 static inline void ftrace_kill_atomic(void) { }
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 # define FTRACE_HASHBITS        10
@@ -101,7 +101,7 @@ void ftrace_kill_atomic(void);
 
 static inline void tracer_disable(void)
 {
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
         ftrace_enabled = 0;
 #endif
 }
@@ -113,7 +113,7 @@ static inline void tracer_disable(void)
  */
 static inline int __ftrace_enabled_save(void)
 {
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
         int saved_ftrace_enabled = ftrace_enabled;
         ftrace_enabled = 0;
         return saved_ftrace_enabled;
@@ -124,7 +124,7 @@ static inline int __ftrace_enabled_save(void)
 
 static inline void __ftrace_enabled_restore(int enabled)
 {
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
         ftrace_enabled = enabled;
 #endif
 }
diff --git a/kernel/Makefile b/kernel/Makefile
index 305f11dbef21..9a3ec66a9d84 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -13,7 +13,7 @@ obj-y     = sched.o fork.o exec_domain.o panic.o printk.o \
 
 CFLAGS_REMOVE_sched.o = -mno-spe
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 # Do not trace debug files and internal ftrace files
 CFLAGS_REMOVE_lockdep.o = -pg
 CFLAGS_REMOVE_lockdep_proc.o = -pg
@@ -88,7 +88,7 @@ obj-$(CONFIG_MARKERS) += marker.o
 obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
 obj-$(CONFIG_LATENCYTOP) += latencytop.o
 obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
-obj-$(CONFIG_FTRACE) += trace/
+obj-$(CONFIG_FUNCTION_TRACER) += trace/
 obj-$(CONFIG_TRACING) += trace/
 obj-$(CONFIG_SMP) += sched_cpupri.o
 
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b3cc73931d1f..edb1075f80d2 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -464,7 +464,7 @@ static struct ctl_table kern_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "ftrace_enabled",
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 1cb3e1f616af..3533c583df47 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -1,11 +1,12 @@
 #
-# Architectures that offer an FTRACE implementation should select HAVE_FTRACE:
+# Architectures that offer an FUNCTION_TRACER implementation should
+#  select HAVE_FUNCTION_TRACER:
 #
 
 config NOP_TRACER
         bool
 
-config HAVE_FTRACE
+config HAVE_FUNCTION_TRACER
         bool
         select NOP_TRACER
 
@@ -28,9 +29,9 @@ config TRACING
         select STACKTRACE
         select TRACEPOINTS
 
-config FTRACE
+config FUNCTION_TRACER
         bool "Kernel Function Tracer"
-        depends on HAVE_FTRACE
+        depends on HAVE_FUNCTION_TRACER
         depends on DEBUG_KERNEL
         select FRAME_POINTER
         select TRACING
@@ -49,7 +50,6 @@ config IRQSOFF_TRACER
         default n
         depends on TRACE_IRQFLAGS_SUPPORT
         depends on GENERIC_TIME
-        depends on HAVE_FTRACE
         depends on DEBUG_KERNEL
         select TRACE_IRQFLAGS
         select TRACING
@@ -73,7 +73,6 @@ config PREEMPT_TRACER
         default n
         depends on GENERIC_TIME
         depends on PREEMPT
-        depends on HAVE_FTRACE
         depends on DEBUG_KERNEL
         select TRACING
         select TRACER_MAX_TRACE
@@ -101,7 +100,6 @@ config SYSPROF_TRACER
 
 config SCHED_TRACER
         bool "Scheduling Latency Tracer"
-        depends on HAVE_FTRACE
         depends on DEBUG_KERNEL
         select TRACING
         select CONTEXT_SWITCH_TRACER
@@ -112,7 +110,6 @@ config SCHED_TRACER
 
 config CONTEXT_SWITCH_TRACER
         bool "Trace process context switches"
-        depends on HAVE_FTRACE
         depends on DEBUG_KERNEL
         select TRACING
         select MARKERS
@@ -122,7 +119,6 @@ config CONTEXT_SWITCH_TRACER
 
 config BOOT_TRACER
         bool "Trace boot initcalls"
-        depends on HAVE_FTRACE
         depends on DEBUG_KERNEL
         select TRACING
         help
@@ -141,9 +137,9 @@ config BOOT_TRACER
 
 config STACK_TRACER
         bool "Trace max stack"
-        depends on HAVE_FTRACE
+        depends on HAVE_FUNCTION_TRACER
         depends on DEBUG_KERNEL
-        select FTRACE
+        select FUNCTION_TRACER
         select STACKTRACE
         help
           This special tracer records the maximum stack footprint of the
@@ -160,7 +156,7 @@ config STACK_TRACER
 
 config DYNAMIC_FTRACE
         bool "enable/disable ftrace tracepoints dynamically"
-        depends on FTRACE
+        depends on FUNCTION_TRACER
         depends on HAVE_DYNAMIC_FTRACE
         depends on DEBUG_KERNEL
         default y
@@ -170,7 +166,7 @@ config DYNAMIC_FTRACE
          with a No-Op instruction) as they are called. A table is
          created to dynamically enable them again.
 
-         This way a CONFIG_FTRACE kernel is slightly larger, but otherwise
+         This way a CONFIG_FUNCTION_TRACER kernel is slightly larger, but otherwise
          has native performance as long as no tracing is active.
 
          The changes to the code are done by a kernel thread that
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index a85dfba88ba0..c8228b1a49e9 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -1,7 +1,7 @@
 
 # Do not instrument the tracer itself:
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
 
@@ -10,13 +10,13 @@ CFLAGS_trace_selftest_dynamic.o = -pg
 obj-y += trace_selftest_dynamic.o
 endif
 
-obj-$(CONFIG_FTRACE) += libftrace.o
+obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o
 obj-$(CONFIG_RING_BUFFER) += ring_buffer.o
 
 obj-$(CONFIG_TRACING) += trace.o
 obj-$(CONFIG_CONTEXT_SWITCH_TRACER) += trace_sched_switch.o
 obj-$(CONFIG_SYSPROF_TRACER) += trace_sysprof.o
-obj-$(CONFIG_FTRACE) += trace_functions.o
+obj-$(CONFIG_FUNCTION_TRACER) += trace_functions.o
 obj-$(CONFIG_IRQSOFF_TRACER) += trace_irqsoff.o
 obj-$(CONFIG_PREEMPT_TRACER) += trace_irqsoff.o
 obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 4dda4f60a2a9..1f54a94189fe 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -164,10 +164,14 @@ static DEFINE_SPINLOCK(ftrace_hash_lock);
 #define ftrace_hash_lock(flags)   spin_lock_irqsave(&ftrace_hash_lock, flags)
 #define ftrace_hash_unlock(flags) \
                         spin_unlock_irqrestore(&ftrace_hash_lock, flags)
+static void ftrace_release_hash(unsigned long start, unsigned long end);
 #else
 /* This is protected via the ftrace_lock with MCOUNT_RECORD. */
 #define ftrace_hash_lock(flags)   do { (void)(flags); } while (0)
 #define ftrace_hash_unlock(flags) do { } while(0)
+static inline void ftrace_release_hash(unsigned long start, unsigned long end)
+{
+}
 #endif
 
 /*
@@ -347,6 +351,7 @@ void ftrace_release(void *start, unsigned long size)
         }
         spin_unlock(&ftrace_lock);
 
+        ftrace_release_hash(s, e);
 }
 
 static struct dyn_ftrace *ftrace_alloc_dyn_node(unsigned long ip)
@@ -1659,6 +1664,44 @@ void __init ftrace_init(void)
         ftrace_disabled = 1;
 }
 #else /* CONFIG_FTRACE_MCOUNT_RECORD */
+
+static void ftrace_release_hash(unsigned long start, unsigned long end)
+{
+        struct dyn_ftrace *rec;
+        struct hlist_node *t, *n;
+        struct hlist_head *head, temp_list;
+        unsigned long flags;
+        int i, cpu;
+
+        preempt_disable_notrace();
+
+        /* disable incase we call something that calls mcount */
+        cpu = raw_smp_processor_id();
+        per_cpu(ftrace_shutdown_disable_cpu, cpu)++;
+
+        ftrace_hash_lock(flags);
+
+        for (i = 0; i < FTRACE_HASHSIZE; i++) {
+                INIT_HLIST_HEAD(&temp_list);
+                head = &ftrace_hash[i];
+
+                /* all CPUS are stopped, we are safe to modify code */
+                hlist_for_each_entry_safe(rec, t, n, head, node) {
+                        if (rec->flags & FTRACE_FL_FREE)
+                                continue;
+
+                        if ((rec->ip >= start) && (rec->ip < end))
+                                ftrace_free_rec(rec);
+                }
+        }
+
+        ftrace_hash_unlock(flags);
+
+        per_cpu(ftrace_shutdown_disable_cpu, cpu)--;
+        preempt_enable_notrace();
+
+}
+
 static int ftraced(void *ignore)
 {
         unsigned long usecs;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d345d649d073..aeb2f2505bc5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -851,7 +851,7 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
         preempt_enable_notrace();
 }
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 static void
 function_trace_call(unsigned long ip, unsigned long parent_ip)
 {
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index f1f99572cde7..6889ca48f1f1 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -335,7 +335,7 @@ void update_max_tr_single(struct trace_array *tr,
 
 extern cycle_t ftrace_now(int cpu);
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 void tracing_start_function_trace(void);
 void tracing_stop_function_trace(void);
 #else
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index e90eb0c2c56c..0f85a64003d3 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -64,7 +64,7 @@ static void function_trace_ctrl_update(struct trace_array *tr)
 
 static struct tracer function_trace __read_mostly =
 {
-        .name        = "ftrace",
+        .name        = "function",
         .init        = function_trace_init,
         .reset       = function_trace_reset,
         .ctrl_update = function_trace_ctrl_update,
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index a7db7f040ae0..9c74071c10e0 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -63,7 +63,7 @@ irq_trace(void)
  */
 static __cacheline_aligned_in_smp       unsigned long max_sequence;
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 /*
  * irqsoff uses its own tracer function to keep the overhead down:
  */
@@ -104,7 +104,7 @@ static struct ftrace_ops trace_ops __read_mostly =
 {
         .func = irqsoff_tracer_call,
 };
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 /*
  * Should this new latency be reported/recorded?
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index fe4a252c2363..3ae93f16b565 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -31,7 +31,7 @@ static raw_spinlock_t wakeup_lock =
 
 static void __wakeup_reset(struct trace_array *tr);
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 /*
  * irqsoff uses its own tracer function to keep the overhead down:
  */
@@ -96,7 +96,7 @@ static struct ftrace_ops trace_ops __read_mostly =
 {
         .func = wakeup_tracer_call,
 };
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 /*
  * Should this new latency be reported/recorded?
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 09cf230d7eca..95815d26a041 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -70,7 +70,7 @@ static int trace_test_buffer(struct trace_array *tr, unsigned long *count)
         return ret;
 }
 
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 
@@ -226,7 +226,7 @@ trace_selftest_startup_function(struct tracer *trace, struct trace_array *tr)
 
         return ret;
 }
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
 
 #ifdef CONFIG_IRQSOFF_TRACER
 int
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index 74c5d9a3afae..be682b62fe58 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -44,6 +44,10 @@ static inline void check_stack(void)
         if (this_size <= max_stack_size)
                 return;
 
+        /* we do not handle interrupt stacks yet */
+        if (!object_is_on_stack(&this_size))
+                return;
+
         raw_local_irq_save(flags);
         __raw_spin_lock(&max_stack_lock);
 
diff --git a/lib/Makefile b/lib/Makefile
index 16feaab057b2..7cb65d85aeb0 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -2,7 +2,7 @@
 # Makefile for some libs needed in the kernel.
 #
 
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
 endif