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-rw-r--r--kernel/trace/trace_export.c64
1 files changed, 44 insertions, 20 deletions
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index bbeec31e0ae3..7b46c9bd22ae 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -18,6 +18,16 @@
18#undef TRACE_SYSTEM 18#undef TRACE_SYSTEM
19#define TRACE_SYSTEM ftrace 19#define TRACE_SYSTEM ftrace
20 20
21/*
22 * The FTRACE_ENTRY_REG macro allows ftrace entry to define register
23 * function and thus become accesible via perf.
24 */
25#undef FTRACE_ENTRY_REG
26#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, \
27 filter, regfn) \
28 FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
29 filter)
30
21/* not needed for this file */ 31/* not needed for this file */
22#undef __field_struct 32#undef __field_struct
23#define __field_struct(type, item) 33#define __field_struct(type, item)
@@ -44,21 +54,22 @@
44#define F_printk(fmt, args...) fmt, args 54#define F_printk(fmt, args...) fmt, args
45 55
46#undef FTRACE_ENTRY 56#undef FTRACE_ENTRY
47#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \ 57#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
48struct ____ftrace_##name { \ 58struct ____ftrace_##name { \
49 tstruct \ 59 tstruct \
50}; \ 60}; \
51static void __always_unused ____ftrace_check_##name(void) \ 61static void __always_unused ____ftrace_check_##name(void) \
52{ \ 62{ \
53 struct ____ftrace_##name *__entry = NULL; \ 63 struct ____ftrace_##name *__entry = NULL; \
54 \ 64 \
55 /* force compile-time check on F_printk() */ \ 65 /* force compile-time check on F_printk() */ \
56 printk(print); \ 66 printk(print); \
57} 67}
58 68
59#undef FTRACE_ENTRY_DUP 69#undef FTRACE_ENTRY_DUP
60#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print) \ 70#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print, filter) \
61 FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print)) 71 FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
72 filter)
62 73
63#include "trace_entries.h" 74#include "trace_entries.h"
64 75
@@ -67,7 +78,7 @@ static void __always_unused ____ftrace_check_##name(void) \
67 ret = trace_define_field(event_call, #type, #item, \ 78 ret = trace_define_field(event_call, #type, #item, \
68 offsetof(typeof(field), item), \ 79 offsetof(typeof(field), item), \
69 sizeof(field.item), \ 80 sizeof(field.item), \
70 is_signed_type(type), FILTER_OTHER); \ 81 is_signed_type(type), filter_type); \
71 if (ret) \ 82 if (ret) \
72 return ret; 83 return ret;
73 84
@@ -77,7 +88,7 @@ static void __always_unused ____ftrace_check_##name(void) \
77 offsetof(typeof(field), \ 88 offsetof(typeof(field), \
78 container.item), \ 89 container.item), \
79 sizeof(field.container.item), \ 90 sizeof(field.container.item), \
80 is_signed_type(type), FILTER_OTHER); \ 91 is_signed_type(type), filter_type); \
81 if (ret) \ 92 if (ret) \
82 return ret; 93 return ret;
83 94
@@ -91,7 +102,7 @@ static void __always_unused ____ftrace_check_##name(void) \
91 ret = trace_define_field(event_call, event_storage, #item, \ 102 ret = trace_define_field(event_call, event_storage, #item, \
92 offsetof(typeof(field), item), \ 103 offsetof(typeof(field), item), \
93 sizeof(field.item), \ 104 sizeof(field.item), \
94 is_signed_type(type), FILTER_OTHER); \ 105 is_signed_type(type), filter_type); \
95 mutex_unlock(&event_storage_mutex); \ 106 mutex_unlock(&event_storage_mutex); \
96 if (ret) \ 107 if (ret) \
97 return ret; \ 108 return ret; \
@@ -104,7 +115,7 @@ static void __always_unused ____ftrace_check_##name(void) \
104 offsetof(typeof(field), \ 115 offsetof(typeof(field), \
105 container.item), \ 116 container.item), \
106 sizeof(field.container.item), \ 117 sizeof(field.container.item), \
107 is_signed_type(type), FILTER_OTHER); \ 118 is_signed_type(type), filter_type); \
108 if (ret) \ 119 if (ret) \
109 return ret; 120 return ret;
110 121
@@ -112,17 +123,18 @@ static void __always_unused ____ftrace_check_##name(void) \
112#define __dynamic_array(type, item) \ 123#define __dynamic_array(type, item) \
113 ret = trace_define_field(event_call, #type, #item, \ 124 ret = trace_define_field(event_call, #type, #item, \
114 offsetof(typeof(field), item), \ 125 offsetof(typeof(field), item), \
115 0, is_signed_type(type), FILTER_OTHER);\ 126 0, is_signed_type(type), filter_type);\
116 if (ret) \ 127 if (ret) \
117 return ret; 128 return ret;
118 129
119#undef FTRACE_ENTRY 130#undef FTRACE_ENTRY
120#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \ 131#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
121int \ 132int \
122ftrace_define_fields_##name(struct ftrace_event_call *event_call) \ 133ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
123{ \ 134{ \
124 struct struct_name field; \ 135 struct struct_name field; \
125 int ret; \ 136 int ret; \
137 int filter_type = filter; \
126 \ 138 \
127 tstruct; \ 139 tstruct; \
128 \ 140 \
@@ -152,13 +164,15 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
152#undef F_printk 164#undef F_printk
153#define F_printk(fmt, args...) #fmt ", " __stringify(args) 165#define F_printk(fmt, args...) #fmt ", " __stringify(args)
154 166
155#undef FTRACE_ENTRY 167#undef FTRACE_ENTRY_REG
156#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \ 168#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
169 regfn) \
157 \ 170 \
158struct ftrace_event_class event_class_ftrace_##call = { \ 171struct ftrace_event_class event_class_ftrace_##call = { \
159 .system = __stringify(TRACE_SYSTEM), \ 172 .system = __stringify(TRACE_SYSTEM), \
160 .define_fields = ftrace_define_fields_##call, \ 173 .define_fields = ftrace_define_fields_##call, \
161 .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\ 174 .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
175 .reg = regfn, \
162}; \ 176}; \
163 \ 177 \
164struct ftrace_event_call __used event_##call = { \ 178struct ftrace_event_call __used event_##call = { \
@@ -170,4 +184,14 @@ struct ftrace_event_call __used event_##call = { \
170struct ftrace_event_call __used \ 184struct ftrace_event_call __used \
171__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call; 185__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
172 186
187#undef FTRACE_ENTRY
188#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print, filter) \
189 FTRACE_ENTRY_REG(call, struct_name, etype, \
190 PARAMS(tstruct), PARAMS(print), filter, NULL)
191
192int ftrace_event_is_function(struct ftrace_event_call *call)
193{
194 return call == &event_function;
195}
196
173#include "trace_entries.h" 197#include "trace_entries.h"
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-11 22:35:06 -0400