Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ccbfac29 SR |
2 | #ifndef _ASM_POWERPC_FTRACE |
3 | #define _ASM_POWERPC_FTRACE | |
4 | ||
f55d9665 ME |
5 | #include <asm/types.h> |
6 | ||
606576ce | 7 | #ifdef CONFIG_FUNCTION_TRACER |
c93bf928 | 8 | #define MCOUNT_ADDR ((unsigned long)(_mcount)) |
395a59d0 AS |
9 | #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ |
10 | ||
370011a2 NR |
11 | #define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR |
12 | ||
7af82ff9 NR |
13 | /* Ignore unused weak functions which will have larger offsets */ |
14 | #ifdef CONFIG_MPROFILE_KERNEL | |
f6834c8c | 15 | #define FTRACE_MCOUNT_MAX_OFFSET 16 |
7af82ff9 NR |
16 | #elif defined(CONFIG_PPC32) |
17 | #define FTRACE_MCOUNT_MAX_OFFSET 8 | |
18 | #endif | |
19 | ||
d95bf254 | 20 | #ifndef __ASSEMBLY__ |
ccbfac29 | 21 | extern void _mcount(void); |
8fd6e5a8 | 22 | |
8fd6e5a8 SR |
23 | static inline unsigned long ftrace_call_adjust(unsigned long addr) |
24 | { | |
f2cc020d | 25 | /* relocation of mcount call site is the same as the address */ |
8fd6e5a8 SR |
26 | return addr; |
27 | } | |
28 | ||
76222808 CL |
29 | unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip, |
30 | unsigned long sp); | |
31 | ||
8fd6e5a8 | 32 | struct dyn_arch_ftrace { |
f48cb8b4 | 33 | struct module *mod; |
8fd6e5a8 | 34 | }; |
40b035ef CL |
35 | |
36 | #ifdef CONFIG_DYNAMIC_FTRACE_WITH_ARGS | |
37 | struct ftrace_regs { | |
38 | struct pt_regs regs; | |
39 | }; | |
40 | ||
41 | static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *fregs) | |
42 | { | |
fc75f873 CL |
43 | /* We clear regs.msr in ftrace_call */ |
44 | return fregs->regs.msr ? &fregs->regs : NULL; | |
40b035ef CL |
45 | } |
46 | ||
0ef86097 MR |
47 | static __always_inline void |
48 | ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs, | |
49 | unsigned long ip) | |
40b035ef CL |
50 | { |
51 | regs_set_return_ip(&fregs->regs, ip); | |
52 | } | |
83021378 | 53 | |
94d095ff MR |
54 | static __always_inline unsigned long |
55 | ftrace_regs_get_instruction_pointer(struct ftrace_regs *fregs) | |
56 | { | |
57 | return instruction_pointer(&fregs->regs); | |
58 | } | |
59 | ||
60 | #define ftrace_regs_get_argument(fregs, n) \ | |
61 | regs_get_kernel_argument(&(fregs)->regs, n) | |
62 | #define ftrace_regs_get_stack_pointer(fregs) \ | |
63 | kernel_stack_pointer(&(fregs)->regs) | |
64 | #define ftrace_regs_return_value(fregs) \ | |
65 | regs_return_value(&(fregs)->regs) | |
66 | #define ftrace_regs_set_return_value(fregs, ret) \ | |
67 | regs_set_return_value(&(fregs)->regs, ret) | |
68 | #define ftrace_override_function_with_return(fregs) \ | |
69 | override_function_with_return(&(fregs)->regs) | |
70 | #define ftrace_regs_query_register_offset(name) \ | |
71 | regs_query_register_offset(name) | |
72 | ||
83021378 CL |
73 | struct ftrace_ops; |
74 | ||
75 | #define ftrace_graph_func ftrace_graph_func | |
76 | void ftrace_graph_func(unsigned long ip, unsigned long parent_ip, | |
77 | struct ftrace_ops *op, struct ftrace_regs *fregs); | |
40b035ef | 78 | #endif |
8fd6e5a8 | 79 | #endif /* __ASSEMBLY__ */ |
ccbfac29 | 80 | |
15308664 TD |
81 | #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS |
82 | #define ARCH_SUPPORTS_FTRACE_OPS 1 | |
83 | #endif | |
0c0c5230 | 84 | #endif /* CONFIG_FUNCTION_TRACER */ |
395a59d0 | 85 | |
c3e59d77 | 86 | #ifndef __ASSEMBLY__ |
f1079d3a | 87 | #ifdef CONFIG_FTRACE_SYSCALLS |
edf6a2df NR |
88 | /* |
89 | * Some syscall entry functions on powerpc start with "ppc_" (fork and clone, | |
90 | * for instance) or ppc32_/ppc64_. We should also match the sys_ variant with | |
91 | * those. | |
92 | */ | |
02424d89 | 93 | #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME |
edf6a2df NR |
94 | static inline bool arch_syscall_match_sym_name(const char *sym, const char *name) |
95 | { | |
96 | return !strcmp(sym, name) || | |
97 | (!strncmp(sym, "__se_sys", 8) && !strcmp(sym + 5, name)) || | |
98 | (!strncmp(sym, "ppc_", 4) && !strcmp(sym + 4, name + 4)) || | |
99 | (!strncmp(sym, "ppc32_", 6) && !strcmp(sym + 6, name + 4)) || | |
100 | (!strncmp(sym, "ppc64_", 6) && !strcmp(sym + 6, name + 4)); | |
02424d89 | 101 | } |
f1079d3a | 102 | #endif /* CONFIG_FTRACE_SYSCALLS */ |
acd55b10 | 103 | |
84ade0a6 | 104 | #if defined(CONFIG_PPC64) && defined(CONFIG_FUNCTION_TRACER) |
acd55b10 NR |
105 | #include <asm/paca.h> |
106 | ||
107 | static inline void this_cpu_disable_ftrace(void) | |
108 | { | |
109 | get_paca()->ftrace_enabled = 0; | |
110 | } | |
111 | ||
112 | static inline void this_cpu_enable_ftrace(void) | |
113 | { | |
114 | get_paca()->ftrace_enabled = 1; | |
115 | } | |
f2d7f62e NP |
116 | |
117 | /* Disable ftrace on this CPU if possible (may not be implemented) */ | |
118 | static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) | |
119 | { | |
120 | get_paca()->ftrace_enabled = ftrace_enabled; | |
121 | } | |
122 | ||
123 | static inline u8 this_cpu_get_ftrace_enabled(void) | |
124 | { | |
125 | return get_paca()->ftrace_enabled; | |
126 | } | |
acd55b10 NR |
127 | #else /* CONFIG_PPC64 */ |
128 | static inline void this_cpu_disable_ftrace(void) { } | |
129 | static inline void this_cpu_enable_ftrace(void) { } | |
f2d7f62e NP |
130 | static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) { } |
131 | static inline u8 this_cpu_get_ftrace_enabled(void) { return 1; } | |
acd55b10 | 132 | #endif /* CONFIG_PPC64 */ |
f3993a03 NR |
133 | |
134 | #ifdef CONFIG_FUNCTION_TRACER | |
135 | extern unsigned int ftrace_tramp_text[], ftrace_tramp_init[]; | |
136 | void ftrace_free_init_tramp(void); | |
137 | #else | |
138 | static inline void ftrace_free_init_tramp(void) { } | |
139 | #endif | |
c3e59d77 | 140 | #endif /* !__ASSEMBLY__ */ |
02424d89 | 141 | |
395a59d0 | 142 | #endif /* _ASM_POWERPC_FTRACE */ |