10 files changed, 39 insertions, 31 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 5b1527883fcb..525c13a4de93 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -108,8 +108,7 @@ config ARCH_NO_VIRT_TO_BUS
 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/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 3855ceb937b0..f4b006ed0ab1 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -28,17 +28,17 @@ static unsigned int ftrace_nop = 0x60000000;
 #endif
 
 
-static unsigned int notrace ftrace_calc_offset(long ip, long addr)
+static unsigned int ftrace_calc_offset(long ip, long addr)
 {
         return (int)(addr - ip);
 }
 
-notrace unsigned char *ftrace_nop_replace(void)
+unsigned char *ftrace_nop_replace(void)
 {
         return (char *)&ftrace_nop;
 }
 
-notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
+unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
 {
         static unsigned int op;
 
@@ -68,7 +68,7 @@ notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
 # define _ASM_PTR       " .long "
 #endif
 
-notrace int
+int
 ftrace_modify_code(unsigned long ip, unsigned char *old_code,
                    unsigned char *new_code)
 {
@@ -113,7 +113,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
         return faulted;
 }
 
-notrace int ftrace_update_ftrace_func(ftrace_func_t func)
+int ftrace_update_ftrace_func(ftrace_func_t func)
 {
         unsigned long ip = (unsigned long)(&ftrace_call);
         unsigned char old[MCOUNT_INSN_SIZE], *new;
@@ -126,23 +126,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
         return ret;
 }
 
-notrace int ftrace_mcount_set(unsigned long *data)
-{
-        unsigned long ip = (long)(&mcount_call);
-        unsigned long *addr = data;
-        unsigned char old[MCOUNT_INSN_SIZE], *new;
-
-        /*
-         * Replace the mcount stub with a pointer to the
-         * ip recorder function.
-         */
-        memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
-        new = ftrace_call_replace(ip, *addr);
-        *addr = ftrace_modify_code(ip, old, new);
-
-        return 0;
-}
-
 int __init ftrace_dyn_arch_init(void *data)
 {
         /* This is running in kstop_machine */
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/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 01b884b25696..26ecb96f9731 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -223,6 +223,8 @@ static int gfar_mdio_of_init_one(struct device_node *np)
         if (ret)
                 return ret;
 
+        /* The gianfar device will try to use the same ID created below to find
+         * this bus, to coordinate register access (since they share).  */
         mdio_dev = platform_device_register_simple("fsl-gianfar_mdio",
                         res.start&0xfffff, &res, 1);
         if (IS_ERR(mdio_dev))
@@ -394,6 +396,30 @@ static int __init gfar_of_init(void)
                         of_node_put(mdio);
                 }
 
+                /* Get MDIO bus controlled by this eTSEC, if any.  Normally only
+                 * eTSEC 1 will control an MDIO bus, not necessarily the same
+                 * bus that its PHY is on ('mdio' above), so we can't just use
+                 * that.  What we do is look for a gianfar mdio device that has
+                 * overlapping registers with this device.  That's really the
+                 * whole point, to find the device sharing our registers to
+                 * coordinate access with it.
+                 */
+                for_each_compatible_node(mdio, NULL, "fsl,gianfar-mdio") {
+                        if (of_address_to_resource(mdio, 0, &res))
+                                continue;
+
+                        if (res.start >= r[0].start && res.end <= r[0].end) {
+                                /* Get the ID the mdio bus platform device was
+                                 * registered with.  gfar_data.bus_id is
+                                 * different because it's for finding a PHY,
+                                 * while this is for finding a MII bus.
+                                 */
+                                gfar_data.mdio_bus = res.start&0xfffff;
+                                of_node_put(mdio);
+                                break;
+                        }
+                }
+
                 ret =
                     platform_device_add_data(gfar_dev, &gfar_data,
                                              sizeof(struct