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-rw-r--r--arch/powerpc/kernel/entry_32.S11
-rw-r--r--arch/powerpc/kernel/ftrace.c8
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c5
-rw-r--r--arch/powerpc/kernel/setup_32.c5
-rw-r--r--arch/powerpc/kernel/setup_64.c5
5 files changed, 14 insertions, 20 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 0e6221889ca..3b1dd29d9f9 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -1129,18 +1129,11 @@ _GLOBAL(_mcount)
stw r5, 8(r1)
LOAD_REG_ADDR(r5, ftrace_trace_function)
-#if 0
- mtctr r3
- mr r1, r5
- bctrl
-#endif
lwz r5,0(r5)
-#if 1
+
mtctr r5
bctrl
-#else
- bl ftrace_stub
-#endif
+
nop
lwz r6, 8(r1)
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 5a4993fefa4..69ed4122346 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -51,10 +51,16 @@ notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
{
static unsigned int op;
+ /*
+ * It would be nice to just use create_function_call, but that will
+ * update the code itself. Here we need to just return the
+ * instruction that is going to be modified, without modifying the
+ * code.
+ */
addr = GET_ADDR(addr);
/* Set to "bl addr" */
- op = 0x48000001 | (ftrace_calc_offset(ip, addr) & 0x03fffffe);
+ op = 0x48000001 | (ftrace_calc_offset(ip, addr) & 0x03fffffc);
/*
* No locking needed, this must be called via kstop_machine
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index cf6b5a7d8b3..4300db52662 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -43,6 +43,7 @@
#include <asm/div64.h>
#include <asm/signal.h>
#include <asm/dcr.h>
+#include <asm/ftrace.h>
#ifdef CONFIG_PPC32
extern void transfer_to_handler(void);
@@ -68,6 +69,10 @@ EXPORT_SYMBOL(single_step_exception);
EXPORT_SYMBOL(sys_sigreturn);
#endif
+#ifdef CONFIG_FTRACE
+EXPORT_SYMBOL(_mcount);
+#endif
+
EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strcat);
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 22f8e2bacd3..19e8fcb9cea 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -47,11 +47,6 @@
#include <asm/kgdb.h>
#endif
-#ifdef CONFIG_FTRACE
-extern void _mcount(void);
-EXPORT_SYMBOL(_mcount);
-#endif
-
extern void bootx_init(unsigned long r4, unsigned long phys);
int boot_cpuid;
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 277bf18cbbc..098fd96a394 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -85,11 +85,6 @@ struct ppc64_caches ppc64_caches = {
};
EXPORT_SYMBOL_GPL(ppc64_caches);
-#ifdef CONFIG_FTRACE
-extern void _mcount(void);
-EXPORT_SYMBOL(_mcount);
-#endif
-
/*
* These are used in binfmt_elf.c to put aux entries on the stack
* for each elf executable being started.