diff options
Diffstat (limited to 'arch/sparc64/kernel/ftrace.c')
-rw-r--r-- | arch/sparc64/kernel/ftrace.c | 26 |
1 files changed, 4 insertions, 22 deletions
diff --git a/arch/sparc64/kernel/ftrace.c b/arch/sparc64/kernel/ftrace.c index 4298d0aee713..d0218e73f982 100644 --- a/arch/sparc64/kernel/ftrace.c +++ b/arch/sparc64/kernel/ftrace.c | |||
@@ -9,12 +9,12 @@ | |||
9 | 9 | ||
10 | static const u32 ftrace_nop = 0x01000000; | 10 | static const u32 ftrace_nop = 0x01000000; |
11 | 11 | ||
12 | notrace unsigned char *ftrace_nop_replace(void) | 12 | unsigned char *ftrace_nop_replace(void) |
13 | { | 13 | { |
14 | return (char *)&ftrace_nop; | 14 | return (char *)&ftrace_nop; |
15 | } | 15 | } |
16 | 16 | ||
17 | notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr) | 17 | unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr) |
18 | { | 18 | { |
19 | static u32 call; | 19 | static u32 call; |
20 | s32 off; | 20 | s32 off; |
@@ -25,7 +25,7 @@ notrace unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr) | |||
25 | return (unsigned char *) &call; | 25 | return (unsigned char *) &call; |
26 | } | 26 | } |
27 | 27 | ||
28 | notrace int | 28 | int |
29 | ftrace_modify_code(unsigned long ip, unsigned char *old_code, | 29 | ftrace_modify_code(unsigned long ip, unsigned char *old_code, |
30 | unsigned char *new_code) | 30 | unsigned char *new_code) |
31 | { | 31 | { |
@@ -59,7 +59,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code, | |||
59 | return faulted; | 59 | return faulted; |
60 | } | 60 | } |
61 | 61 | ||
62 | notrace int ftrace_update_ftrace_func(ftrace_func_t func) | 62 | int ftrace_update_ftrace_func(ftrace_func_t func) |
63 | { | 63 | { |
64 | unsigned long ip = (unsigned long)(&ftrace_call); | 64 | unsigned long ip = (unsigned long)(&ftrace_call); |
65 | unsigned char old[MCOUNT_INSN_SIZE], *new; | 65 | unsigned char old[MCOUNT_INSN_SIZE], *new; |
@@ -69,24 +69,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func) | |||
69 | return ftrace_modify_code(ip, old, new); | 69 | return ftrace_modify_code(ip, old, new); |
70 | } | 70 | } |
71 | 71 | ||
72 | notrace int ftrace_mcount_set(unsigned long *data) | ||
73 | { | ||
74 | unsigned long ip = (long)(&mcount_call); | ||
75 | unsigned long *addr = data; | ||
76 | unsigned char old[MCOUNT_INSN_SIZE], *new; | ||
77 | |||
78 | /* | ||
79 | * Replace the mcount stub with a pointer to the | ||
80 | * ip recorder function. | ||
81 | */ | ||
82 | memcpy(old, &mcount_call, MCOUNT_INSN_SIZE); | ||
83 | new = ftrace_call_replace(ip, *addr); | ||
84 | *addr = ftrace_modify_code(ip, old, new); | ||
85 | |||
86 | return 0; | ||
87 | } | ||
88 | |||
89 | |||
90 | int __init ftrace_dyn_arch_init(void *data) | 72 | int __init ftrace_dyn_arch_init(void *data) |
91 | { | 73 | { |
92 | ftrace_mcount_set(data); | 74 | ftrace_mcount_set(data); |