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-rw-r--r--include/linux/ftrace_event.h2
-rw-r--r--include/linux/syscalls.h18
-rw-r--r--include/trace/ftrace.h45
-rw-r--r--kernel/trace/trace_events.c6
-rw-r--r--kernel/trace/trace_kprobe.c14
-rw-r--r--kernel/trace/trace_syscalls.c8
6 files changed, 41 insertions, 52 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 4f77932..b1a007d 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -148,7 +148,7 @@ struct ftrace_event_call {
struct ftrace_event_class *class;
char *name;
struct dentry *dir;
- struct trace_event *event;
+ struct trace_event event;
int enabled;
int id;
const char *print_fmt;
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index f725677..a1a86a5 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -120,24 +120,20 @@ struct perf_event_attr;
extern struct ftrace_event_class event_class_syscall_enter;
extern struct ftrace_event_class event_class_syscall_exit;
+extern struct trace_event_functions enter_syscall_print_funcs;
+extern struct trace_event_functions exit_syscall_print_funcs;
#define SYSCALL_TRACE_ENTER_EVENT(sname) \
static struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call \
__attribute__((__aligned__(4))) event_enter_##sname; \
- static struct trace_event_functions enter_syscall_print_funcs_##sname = { \
- .trace = print_syscall_enter, \
- }; \
- static struct trace_event enter_syscall_print_##sname = { \
- .funcs = &enter_syscall_print_funcs_##sname, \
- }; \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_enter_##sname = { \
.name = "sys_enter"#sname, \
.class = &event_class_syscall_enter, \
- .event = &enter_syscall_print_##sname, \
+ .event.funcs = &enter_syscall_print_funcs, \
.data = (void *)&__syscall_meta_##sname,\
}
@@ -145,19 +141,13 @@ extern struct ftrace_event_class event_class_syscall_exit;
static struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call \
__attribute__((__aligned__(4))) event_exit_##sname; \
- static struct trace_event_functions exit_syscall_print_funcs_##sname = { \
- .trace = print_syscall_exit, \
- }; \
- static struct trace_event exit_syscall_print_##sname = { \
- .funcs = &exit_syscall_print_funcs_##sname, \
- }; \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_exit_##sname = { \
.name = "sys_exit"#sname, \
.class = &event_class_syscall_exit, \
- .event = &exit_syscall_print_##sname, \
+ .event.funcs = &exit_syscall_print_funcs, \
.data = (void *)&__syscall_meta_##sname,\
}
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 51ed7f35..824141d 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -206,18 +206,22 @@
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static notrace enum print_line_t \
-ftrace_raw_output_id_##call(int event_id, const char *name, \
- struct trace_iterator *iter, int flags) \
+ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
+ struct trace_event *trace_event) \
{ \
+ struct ftrace_event_call *event; \
struct trace_seq *s = &iter->seq; \
struct ftrace_raw_##call *field; \
struct trace_entry *entry; \
struct trace_seq *p; \
int ret; \
\
+ event = container_of(trace_event, struct ftrace_event_call, \
+ event); \
+ \
entry = iter->ent; \
\
- if (entry->type != event_id) { \
+ if (entry->type != event->id) { \
WARN_ON_ONCE(1); \
return TRACE_TYPE_UNHANDLED; \
} \
@@ -226,7 +230,7 @@ ftrace_raw_output_id_##call(int event_id, const char *name, \
\
p = &get_cpu_var(ftrace_event_seq); \
trace_seq_init(p); \
- ret = trace_seq_printf(s, "%s: ", name); \
+ ret = trace_seq_printf(s, "%s: ", event->name); \
if (ret) \
ret = trace_seq_printf(s, print); \
put_cpu(); \
@@ -234,17 +238,10 @@ ftrace_raw_output_id_##call(int event_id, const char *name, \
return TRACE_TYPE_PARTIAL_LINE; \
\
return TRACE_TYPE_HANDLED; \
-}
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args) \
-static notrace enum print_line_t \
-ftrace_raw_output_##name(struct trace_iterator *iter, int flags, \
- struct trace_event *event) \
-{ \
- return ftrace_raw_output_id_##template(event_##name.id, \
- #name, iter, flags); \
-}
+} \
+static struct trace_event_functions ftrace_event_type_funcs_##call = { \
+ .trace = ftrace_raw_output_##call, \
+};
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
@@ -277,7 +274,10 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
return TRACE_TYPE_PARTIAL_LINE; \
\
return TRACE_TYPE_HANDLED; \
-}
+} \
+static struct trace_event_functions ftrace_event_type_funcs_##call = { \
+ .trace = ftrace_raw_output_##call, \
+};
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -533,20 +533,13 @@ ftrace_raw_event_##call(void *__data, proto) \
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
-static struct trace_event_functions ftrace_event_type_funcs_##call = { \
- .trace = ftrace_raw_output_##call, \
-}; \
-static struct trace_event ftrace_event_type_##call = { \
- .funcs = &ftrace_event_type_funcs_##call, \
-}; \
static inline void ftrace_test_probe_##call(void) \
{ \
check_trace_callback_type_##call(ftrace_raw_event_##template); \
}
#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -582,7 +575,7 @@ __attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
.name = #call, \
.class = &event_class_##template, \
- .event = &ftrace_event_type_##call, \
+ .event.funcs = &ftrace_event_type_funcs_##template, \
.print_fmt = print_fmt_##template, \
};
@@ -596,7 +589,7 @@ __attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
.name = #call, \
.class = &event_class_##template, \
- .event = &ftrace_event_type_##call, \
+ .event.funcs = &ftrace_event_type_funcs_##call, \
.print_fmt = print_fmt_##call, \
}
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 8e94255..aafe5bf 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -122,7 +122,7 @@ int trace_event_raw_init(struct ftrace_event_call *call)
{
int id;
- id = register_ftrace_event(call->event);
+ id = register_ftrace_event(&call->event);
if (!id)
return -ENODEV;
call->id = id;
@@ -1073,8 +1073,8 @@ static void remove_subsystem_dir(const char *name)
static void __trace_remove_event_call(struct ftrace_event_call *call)
{
ftrace_event_enable_disable(call, 0);
- if (call->event)
- __unregister_ftrace_event(call->event);
+ if (call->event.funcs)
+ __unregister_ftrace_event(&call->event);
debugfs_remove_recursive(call->dir);
list_del(&call->list);
trace_destroy_fields(call);
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index b989ae2..d8061c3 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -204,7 +204,6 @@ struct trace_probe {
const char *symbol; /* symbol name */
struct ftrace_event_class class;
struct ftrace_event_call call;
- struct trace_event event;
unsigned int nr_args;
struct probe_arg args[];
};
@@ -1020,7 +1019,7 @@ print_kprobe_event(struct trace_iterator *iter, int flags,
int i;
field = (struct kprobe_trace_entry *)iter->ent;
- tp = container_of(event, struct trace_probe, event);
+ tp = container_of(event, struct trace_probe, call.event);
if (!trace_seq_printf(s, "%s: (", tp->call.name))
goto partial;
@@ -1054,7 +1053,7 @@ print_kretprobe_event(struct trace_iterator *iter, int flags,
int i;
field = (struct kretprobe_trace_entry *)iter->ent;
- tp = container_of(event, struct trace_probe, event);
+ tp = container_of(event, struct trace_probe, call.event);
if (!trace_seq_printf(s, "%s: (", tp->call.name))
goto partial;
@@ -1364,20 +1363,19 @@ static int register_probe_event(struct trace_probe *tp)
/* Initialize ftrace_event_call */
if (probe_is_return(tp)) {
- tp->event.funcs = &kretprobe_funcs;
INIT_LIST_HEAD(&call->class->fields);
+ call->event.funcs = &kretprobe_funcs;
call->class->raw_init = probe_event_raw_init;
call->class->define_fields = kretprobe_event_define_fields;
} else {
INIT_LIST_HEAD(&call->class->fields);
- tp->event.funcs = &kprobe_funcs;
+ call->event.funcs = &kprobe_funcs;
call->class->raw_init = probe_event_raw_init;
call->class->define_fields = kprobe_event_define_fields;
}
if (set_print_fmt(tp) < 0)
return -ENOMEM;
- call->event = &tp->event;
- call->id = register_ftrace_event(&tp->event);
+ call->id = register_ftrace_event(&call->event);
if (!call->id) {
kfree(call->print_fmt);
return -ENODEV;
@@ -1389,7 +1387,7 @@ static int register_probe_event(struct trace_probe *tp)
if (ret) {
pr_info("Failed to register kprobe event: %s\n", call->name);
kfree(call->print_fmt);
- unregister_ftrace_event(&tp->event);
+ unregister_ftrace_event(&call->event);
}
return ret;
}
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 3751c81..7c7cfe9 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -39,6 +39,14 @@ syscall_get_exit_fields(struct ftrace_event_call *call)
return &entry->exit_fields;
}
+struct trace_event_functions enter_syscall_print_funcs = {
+ .trace = print_syscall_enter,
+};
+
+struct trace_event_functions exit_syscall_print_funcs = {
+ .trace = print_syscall_exit,
+};
+
struct ftrace_event_class event_class_syscall_enter = {
.system = "syscalls",
.reg = syscall_enter_register,
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