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Diffstat (limited to 'arch/powerpc/kernel/ftrace.c')
-rw-r--r--arch/powerpc/kernel/ftrace.c27
1 files changed, 5 insertions, 22 deletions
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;
28#endif 28#endif
29 29
30 30
31static unsigned int notrace ftrace_calc_offset(long ip, long addr) 31static unsigned int ftrace_calc_offset(long ip, long addr)
32{ 32{
33 return (int)(addr - ip); 33 return (int)(addr - ip);
34} 34}
35 35
36notrace unsigned char *ftrace_nop_replace(void) 36unsigned char *ftrace_nop_replace(void)
37{ 37{
38 return (char *)&ftrace_nop; 38 return (char *)&ftrace_nop;
39} 39}
40 40
41notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr) 41unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
42{ 42{
43 static unsigned int op; 43 static unsigned int op;
44 44
@@ -68,7 +68,7 @@ notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
68# define _ASM_PTR " .long " 68# define _ASM_PTR " .long "
69#endif 69#endif
70 70
71notrace int 71int
72ftrace_modify_code(unsigned long ip, unsigned char *old_code, 72ftrace_modify_code(unsigned long ip, unsigned char *old_code,
73 unsigned char *new_code) 73 unsigned char *new_code)
74{ 74{
@@ -113,7 +113,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
113 return faulted; 113 return faulted;
114} 114}
115 115
116notrace int ftrace_update_ftrace_func(ftrace_func_t func) 116int ftrace_update_ftrace_func(ftrace_func_t func)
117{ 117{
118 unsigned long ip = (unsigned long)(&ftrace_call); 118 unsigned long ip = (unsigned long)(&ftrace_call);
119 unsigned char old[MCOUNT_INSN_SIZE], *new; 119 unsigned char old[MCOUNT_INSN_SIZE], *new;
@@ -126,23 +126,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
126 return ret; 126 return ret;
127} 127}
128 128
129notrace int ftrace_mcount_set(unsigned long *data)
130{
131 unsigned long ip = (long)(&mcount_call);
132 unsigned long *addr = data;
133 unsigned char old[MCOUNT_INSN_SIZE], *new;
134
135 /*
136 * Replace the mcount stub with a pointer to the
137 * ip recorder function.
138 */
139 memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
140 new = ftrace_call_replace(ip, *addr);
141 *addr = ftrace_modify_code(ip, old, new);
142
143 return 0;
144}
145
146int __init ftrace_dyn_arch_init(void *data) 129int __init ftrace_dyn_arch_init(void *data)
147{ 130{
148 /* This is running in kstop_machine */ 131 /* This is running in kstop_machine */