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-rw-r--r--include/asm-generic/vmlinux.lds.h7
-rw-r--r--include/linux/module.h2
-rw-r--r--include/linux/syscalls.h10
-rw-r--r--include/trace/ftrace.h24
-rw-r--r--kernel/trace/trace_events.c12
-rw-r--r--kernel/trace/trace_export.c6
6 files changed, 32 insertions, 29 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 6ebb81030d2d..f53708be95eb 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -124,7 +124,8 @@
124#endif 124#endif
125 125
126#ifdef CONFIG_EVENT_TRACING 126#ifdef CONFIG_EVENT_TRACING
127#define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .; \ 127#define FTRACE_EVENTS() . = ALIGN(8); \
128 VMLINUX_SYMBOL(__start_ftrace_events) = .; \
128 *(_ftrace_events) \ 129 *(_ftrace_events) \
129 VMLINUX_SYMBOL(__stop_ftrace_events) = .; 130 VMLINUX_SYMBOL(__stop_ftrace_events) = .;
130#else 131#else
@@ -179,9 +180,6 @@
179 TRACE_PRINTKS() \ 180 TRACE_PRINTKS() \
180 \ 181 \
181 STRUCT_ALIGN(); \ 182 STRUCT_ALIGN(); \
182 FTRACE_EVENTS() \
183 \
184 STRUCT_ALIGN(); \
185 TRACE_SYSCALLS() 183 TRACE_SYSCALLS()
186 184
187/* 185/*
@@ -482,6 +480,7 @@
482 KERNEL_CTORS() \ 480 KERNEL_CTORS() \
483 *(.init.rodata) \ 481 *(.init.rodata) \
484 MCOUNT_REC() \ 482 MCOUNT_REC() \
483 FTRACE_EVENTS() \
485 DEV_DISCARD(init.rodata) \ 484 DEV_DISCARD(init.rodata) \
486 CPU_DISCARD(init.rodata) \ 485 CPU_DISCARD(init.rodata) \
487 MEM_DISCARD(init.rodata) \ 486 MEM_DISCARD(init.rodata) \
diff --git a/include/linux/module.h b/include/linux/module.h
index e7c6385c6683..7695a303bb55 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -389,7 +389,7 @@ struct module
389 unsigned int num_trace_bprintk_fmt; 389 unsigned int num_trace_bprintk_fmt;
390#endif 390#endif
391#ifdef CONFIG_EVENT_TRACING 391#ifdef CONFIG_EVENT_TRACING
392 struct ftrace_event_call *trace_events; 392 struct ftrace_event_call **trace_events;
393 unsigned int num_trace_events; 393 unsigned int num_trace_events;
394#endif 394#endif
395#ifdef CONFIG_FTRACE_MCOUNT_RECORD 395#ifdef CONFIG_FTRACE_MCOUNT_RECORD
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 18cd0684fc4e..45508fec366d 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -128,28 +128,30 @@ extern struct trace_event_functions exit_syscall_print_funcs;
128 static struct syscall_metadata \ 128 static struct syscall_metadata \
129 __attribute__((__aligned__(4))) __syscall_meta_##sname; \ 129 __attribute__((__aligned__(4))) __syscall_meta_##sname; \
130 static struct ftrace_event_call __used \ 130 static struct ftrace_event_call __used \
131 __attribute__((__aligned__(4))) \
132 __attribute__((section("_ftrace_events"))) \
133 event_enter_##sname = { \ 131 event_enter_##sname = { \
134 .name = "sys_enter"#sname, \ 132 .name = "sys_enter"#sname, \
135 .class = &event_class_syscall_enter, \ 133 .class = &event_class_syscall_enter, \
136 .event.funcs = &enter_syscall_print_funcs, \ 134 .event.funcs = &enter_syscall_print_funcs, \
137 .data = (void *)&__syscall_meta_##sname,\ 135 .data = (void *)&__syscall_meta_##sname,\
138 }; \ 136 }; \
137 static struct ftrace_event_call __used \
138 __attribute__((section("_ftrace_events"))) \
139 *__event_enter_##sname = &event_enter_##sname; \
139 __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY) 140 __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY)
140 141
141#define SYSCALL_TRACE_EXIT_EVENT(sname) \ 142#define SYSCALL_TRACE_EXIT_EVENT(sname) \
142 static struct syscall_metadata \ 143 static struct syscall_metadata \
143 __attribute__((__aligned__(4))) __syscall_meta_##sname; \ 144 __attribute__((__aligned__(4))) __syscall_meta_##sname; \
144 static struct ftrace_event_call __used \ 145 static struct ftrace_event_call __used \
145 __attribute__((__aligned__(4))) \
146 __attribute__((section("_ftrace_events"))) \
147 event_exit_##sname = { \ 146 event_exit_##sname = { \
148 .name = "sys_exit"#sname, \ 147 .name = "sys_exit"#sname, \
149 .class = &event_class_syscall_exit, \ 148 .class = &event_class_syscall_exit, \
150 .event.funcs = &exit_syscall_print_funcs, \ 149 .event.funcs = &exit_syscall_print_funcs, \
151 .data = (void *)&__syscall_meta_##sname,\ 150 .data = (void *)&__syscall_meta_##sname,\
152 }; \ 151 }; \
152 static struct ftrace_event_call __used \
153 __attribute__((section("_ftrace_events"))) \
154 *__event_exit_##sname = &event_exit_##sname; \
153 __TRACE_EVENT_FLAGS(exit_##sname, TRACE_EVENT_FL_CAP_ANY) 155 __TRACE_EVENT_FLAGS(exit_##sname, TRACE_EVENT_FL_CAP_ANY)
154 156
155#define SYSCALL_METADATA(sname, nb) \ 157#define SYSCALL_METADATA(sname, nb) \
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index e16610c208c9..3e68366d485a 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -446,14 +446,16 @@ static inline notrace int ftrace_get_offsets_##call( \
446 * .reg = ftrace_event_reg, 446 * .reg = ftrace_event_reg,
447 * }; 447 * };
448 * 448 *
449 * static struct ftrace_event_call __used 449 * static struct ftrace_event_call event_<call> = {
450 * __attribute__((__aligned__(4)))
451 * __attribute__((section("_ftrace_events"))) event_<call> = {
452 * .name = "<call>", 450 * .name = "<call>",
453 * .class = event_class_<template>, 451 * .class = event_class_<template>,
454 * .event = &ftrace_event_type_<call>, 452 * .event = &ftrace_event_type_<call>,
455 * .print_fmt = print_fmt_<call>, 453 * .print_fmt = print_fmt_<call>,
456 * }; 454 * };
455 * // its only safe to use pointers when doing linker tricks to
456 * // create an array.
457 * static struct ftrace_event_call __used
458 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
457 * 459 *
458 */ 460 */
459 461
@@ -579,28 +581,28 @@ static struct ftrace_event_class __used event_class_##call = { \
579#undef DEFINE_EVENT 581#undef DEFINE_EVENT
580#define DEFINE_EVENT(template, call, proto, args) \ 582#define DEFINE_EVENT(template, call, proto, args) \
581 \ 583 \
582static struct ftrace_event_call __used \ 584static struct ftrace_event_call __used event_##call = { \
583__attribute__((__aligned__(4))) \
584__attribute__((section("_ftrace_events"))) event_##call = { \
585 .name = #call, \ 585 .name = #call, \
586 .class = &event_class_##template, \ 586 .class = &event_class_##template, \
587 .event.funcs = &ftrace_event_type_funcs_##template, \ 587 .event.funcs = &ftrace_event_type_funcs_##template, \
588 .print_fmt = print_fmt_##template, \ 588 .print_fmt = print_fmt_##template, \
589}; 589}; \
590static struct ftrace_event_call __used \
591__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
590 592
591#undef DEFINE_EVENT_PRINT 593#undef DEFINE_EVENT_PRINT
592#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ 594#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
593 \ 595 \
594static const char print_fmt_##call[] = print; \ 596static const char print_fmt_##call[] = print; \
595 \ 597 \
596static struct ftrace_event_call __used \ 598static struct ftrace_event_call __used event_##call = { \
597__attribute__((__aligned__(4))) \
598__attribute__((section("_ftrace_events"))) event_##call = { \
599 .name = #call, \ 599 .name = #call, \
600 .class = &event_class_##template, \ 600 .class = &event_class_##template, \
601 .event.funcs = &ftrace_event_type_funcs_##call, \ 601 .event.funcs = &ftrace_event_type_funcs_##call, \
602 .print_fmt = print_fmt_##call, \ 602 .print_fmt = print_fmt_##call, \
603} 603}; \
604static struct ftrace_event_call __used \
605__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
604 606
605#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 607#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
606 608
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 35fde09b81de..5f499e0438a4 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1284,7 +1284,7 @@ trace_create_file_ops(struct module *mod)
1284static void trace_module_add_events(struct module *mod) 1284static void trace_module_add_events(struct module *mod)
1285{ 1285{
1286 struct ftrace_module_file_ops *file_ops = NULL; 1286 struct ftrace_module_file_ops *file_ops = NULL;
1287 struct ftrace_event_call *call, *start, *end; 1287 struct ftrace_event_call **call, **start, **end;
1288 1288
1289 start = mod->trace_events; 1289 start = mod->trace_events;
1290 end = mod->trace_events + mod->num_trace_events; 1290 end = mod->trace_events + mod->num_trace_events;
@@ -1297,7 +1297,7 @@ static void trace_module_add_events(struct module *mod)
1297 return; 1297 return;
1298 1298
1299 for_each_event(call, start, end) { 1299 for_each_event(call, start, end) {
1300 __trace_add_event_call(call, mod, 1300 __trace_add_event_call(*call, mod,
1301 &file_ops->id, &file_ops->enable, 1301 &file_ops->id, &file_ops->enable,
1302 &file_ops->filter, &file_ops->format); 1302 &file_ops->filter, &file_ops->format);
1303 } 1303 }
@@ -1367,8 +1367,8 @@ static struct notifier_block trace_module_nb = {
1367 .priority = 0, 1367 .priority = 0,
1368}; 1368};
1369 1369
1370extern struct ftrace_event_call __start_ftrace_events[]; 1370extern struct ftrace_event_call *__start_ftrace_events[];
1371extern struct ftrace_event_call __stop_ftrace_events[]; 1371extern struct ftrace_event_call *__stop_ftrace_events[];
1372 1372
1373static char bootup_event_buf[COMMAND_LINE_SIZE] __initdata; 1373static char bootup_event_buf[COMMAND_LINE_SIZE] __initdata;
1374 1374
@@ -1384,7 +1384,7 @@ __setup("trace_event=", setup_trace_event);
1384 1384
1385static __init int event_trace_init(void) 1385static __init int event_trace_init(void)
1386{ 1386{
1387 struct ftrace_event_call *call; 1387 struct ftrace_event_call **call;
1388 struct dentry *d_tracer; 1388 struct dentry *d_tracer;
1389 struct dentry *entry; 1389 struct dentry *entry;
1390 struct dentry *d_events; 1390 struct dentry *d_events;
@@ -1430,7 +1430,7 @@ static __init int event_trace_init(void)
1430 pr_warning("tracing: Failed to allocate common fields"); 1430 pr_warning("tracing: Failed to allocate common fields");
1431 1431
1432 for_each_event(call, __start_ftrace_events, __stop_ftrace_events) { 1432 for_each_event(call, __start_ftrace_events, __stop_ftrace_events) {
1433 __trace_add_event_call(call, NULL, &ftrace_event_id_fops, 1433 __trace_add_event_call(*call, NULL, &ftrace_event_id_fops,
1434 &ftrace_enable_fops, 1434 &ftrace_enable_fops,
1435 &ftrace_event_filter_fops, 1435 &ftrace_event_filter_fops,
1436 &ftrace_event_format_fops); 1436 &ftrace_event_format_fops);
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 4b74d71705c0..bbeec31e0ae3 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -161,13 +161,13 @@ struct ftrace_event_class event_class_ftrace_##call = { \
161 .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\ 161 .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
162}; \ 162}; \
163 \ 163 \
164struct ftrace_event_call __used \ 164struct ftrace_event_call __used event_##call = { \
165__attribute__((__aligned__(4))) \
166__attribute__((section("_ftrace_events"))) event_##call = { \
167 .name = #call, \ 165 .name = #call, \
168 .event.type = etype, \ 166 .event.type = etype, \
169 .class = &event_class_ftrace_##call, \ 167 .class = &event_class_ftrace_##call, \
170 .print_fmt = print, \ 168 .print_fmt = print, \
171}; \ 169}; \
170struct ftrace_event_call __used \
171__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
172 172
173#include "trace_entries.h" 173#include "trace_entries.h"
generated by cgit v1.2.2 (git 2.25.0) at 2025-05-03 22:51:08 -0400