diff options
Diffstat (limited to 'arch/powerpc/kernel/ftrace.c')
-rw-r--r-- | arch/powerpc/kernel/ftrace.c | 27 |
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 | ||
31 | static unsigned int notrace ftrace_calc_offset(long ip, long addr) | 31 | static 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 | ||
36 | notrace unsigned char *ftrace_nop_replace(void) | 36 | unsigned char *ftrace_nop_replace(void) |
37 | { | 37 | { |
38 | return (char *)&ftrace_nop; | 38 | return (char *)&ftrace_nop; |
39 | } | 39 | } |
40 | 40 | ||
41 | notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr) | 41 | unsigned 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 | ||
71 | notrace int | 71 | int |
72 | ftrace_modify_code(unsigned long ip, unsigned char *old_code, | 72 | ftrace_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 | ||
116 | notrace int ftrace_update_ftrace_func(ftrace_func_t func) | 116 | int 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 | ||
129 | notrace 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 | |||
146 | int __init ftrace_dyn_arch_init(void *data) | 129 | int __init ftrace_dyn_arch_init(void *data) |
147 | { | 130 | { |
148 | /* This is running in kstop_machine */ | 131 | /* This is running in kstop_machine */ |