tracing/events: move the ftrace event tracing code to core
This patch moves the ftrace creation into include/trace/ftrace.h and simplifies the work of developers in adding new tracepoints. Just the act of creating the trace points in include/trace and including define_trace.h will create the events in the debugfs/tracing/events directory. This patch removes the need of include/trace/trace_events.h Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
Steven Rostedt
Родитель
97f2025153
Коммит
f42c85e74f
|
|
@ -56,6 +56,10 @@
|
|||
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
#ifdef CONFIG_EVENT_TRACER
|
||||
#include <trace/ftrace.h>
|
||||
#endif
|
||||
|
||||
#undef TRACE_HEADER_MULTI_READ
|
||||
|
||||
/* Only undef what we defined in this file */
|
||||
|
|
|
|||
|
|
@ -1,3 +1,216 @@
|
|||
/*
|
||||
* Stage 1 of the trace events.
|
||||
*
|
||||
* Override the macros in <trace/trace_events.h> to include the following:
|
||||
*
|
||||
* struct ftrace_raw_<call> {
|
||||
* struct trace_entry ent;
|
||||
* <type> <item>;
|
||||
* <type2> <item2>[<len>];
|
||||
* [...]
|
||||
* };
|
||||
*
|
||||
* The <type> <item> is created by the __field(type, item) macro or
|
||||
* the __array(type2, item2, len) macro.
|
||||
* We simply do "type item;", and that will create the fields
|
||||
* in the structure.
|
||||
*/
|
||||
|
||||
#include <linux/ftrace_event.h>
|
||||
|
||||
#undef TRACE_FORMAT
|
||||
#define TRACE_FORMAT(call, proto, args, fmt)
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) type item[len];
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) type item;
|
||||
|
||||
#undef TP_STRUCT__entry
|
||||
#define TP_STRUCT__entry(args...) args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
|
||||
struct ftrace_raw_##name { \
|
||||
struct trace_entry ent; \
|
||||
tstruct \
|
||||
}; \
|
||||
static struct ftrace_event_call event_##name
|
||||
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
/*
|
||||
* Stage 2 of the trace events.
|
||||
*
|
||||
* Override the macros in <trace/trace_events.h> to include the following:
|
||||
*
|
||||
* enum print_line_t
|
||||
* ftrace_raw_output_<call>(struct trace_iterator *iter, int flags)
|
||||
* {
|
||||
* struct trace_seq *s = &iter->seq;
|
||||
* struct ftrace_raw_<call> *field; <-- defined in stage 1
|
||||
* struct trace_entry *entry;
|
||||
* int ret;
|
||||
*
|
||||
* entry = iter->ent;
|
||||
*
|
||||
* if (entry->type != event_<call>.id) {
|
||||
* WARN_ON_ONCE(1);
|
||||
* return TRACE_TYPE_UNHANDLED;
|
||||
* }
|
||||
*
|
||||
* field = (typeof(field))entry;
|
||||
*
|
||||
* ret = trace_seq_printf(s, <TP_printk> "\n");
|
||||
* if (!ret)
|
||||
* return TRACE_TYPE_PARTIAL_LINE;
|
||||
*
|
||||
* return TRACE_TYPE_HANDLED;
|
||||
* }
|
||||
*
|
||||
* This is the method used to print the raw event to the trace
|
||||
* output format. Note, this is not needed if the data is read
|
||||
* in binary.
|
||||
*/
|
||||
|
||||
#undef __entry
|
||||
#define __entry field
|
||||
|
||||
#undef TP_printk
|
||||
#define TP_printk(fmt, args...) fmt "\n", args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
|
||||
enum print_line_t \
|
||||
ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
|
||||
{ \
|
||||
struct trace_seq *s = &iter->seq; \
|
||||
struct ftrace_raw_##call *field; \
|
||||
struct trace_entry *entry; \
|
||||
int ret; \
|
||||
\
|
||||
entry = iter->ent; \
|
||||
\
|
||||
if (entry->type != event_##call.id) { \
|
||||
WARN_ON_ONCE(1); \
|
||||
return TRACE_TYPE_UNHANDLED; \
|
||||
} \
|
||||
\
|
||||
field = (typeof(field))entry; \
|
||||
\
|
||||
ret = trace_seq_printf(s, #call ": " print); \
|
||||
if (!ret) \
|
||||
return TRACE_TYPE_PARTIAL_LINE; \
|
||||
\
|
||||
return TRACE_TYPE_HANDLED; \
|
||||
}
|
||||
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
/*
|
||||
* Setup the showing format of trace point.
|
||||
*
|
||||
* int
|
||||
* ftrace_format_##call(struct trace_seq *s)
|
||||
* {
|
||||
* struct ftrace_raw_##call field;
|
||||
* int ret;
|
||||
*
|
||||
* ret = trace_seq_printf(s, #type " " #item ";"
|
||||
* " offset:%u; size:%u;\n",
|
||||
* offsetof(struct ftrace_raw_##call, item),
|
||||
* sizeof(field.type));
|
||||
*
|
||||
* }
|
||||
*/
|
||||
|
||||
#undef TP_STRUCT__entry
|
||||
#define TP_STRUCT__entry(args...) args
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) \
|
||||
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
|
||||
"offset:%u;\tsize:%u;\n", \
|
||||
(unsigned int)offsetof(typeof(field), item), \
|
||||
(unsigned int)sizeof(field.item)); \
|
||||
if (!ret) \
|
||||
return 0;
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) \
|
||||
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
|
||||
"offset:%u;\tsize:%u;\n", \
|
||||
(unsigned int)offsetof(typeof(field), item), \
|
||||
(unsigned int)sizeof(field.item)); \
|
||||
if (!ret) \
|
||||
return 0;
|
||||
|
||||
#undef __entry
|
||||
#define __entry REC
|
||||
|
||||
#undef TP_printk
|
||||
#define TP_printk(fmt, args...) "%s, %s\n", #fmt, __stringify(args)
|
||||
|
||||
#undef TP_fast_assign
|
||||
#define TP_fast_assign(args...) args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
|
||||
static int \
|
||||
ftrace_format_##call(struct trace_seq *s) \
|
||||
{ \
|
||||
struct ftrace_raw_##call field; \
|
||||
int ret; \
|
||||
\
|
||||
tstruct; \
|
||||
\
|
||||
trace_seq_printf(s, "\nprint fmt: " print); \
|
||||
\
|
||||
return ret; \
|
||||
}
|
||||
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) \
|
||||
ret = trace_define_field(event_call, #type, #item, \
|
||||
offsetof(typeof(field), item), \
|
||||
sizeof(field.item)); \
|
||||
if (ret) \
|
||||
return ret;
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) \
|
||||
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
|
||||
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
|
||||
offsetof(typeof(field), item), \
|
||||
sizeof(field.item)); \
|
||||
if (ret) \
|
||||
return ret;
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
|
||||
int \
|
||||
ftrace_define_fields_##call(void) \
|
||||
{ \
|
||||
struct ftrace_raw_##call field; \
|
||||
struct ftrace_event_call *event_call = &event_##call; \
|
||||
int ret; \
|
||||
\
|
||||
__common_field(unsigned char, type); \
|
||||
__common_field(unsigned char, flags); \
|
||||
__common_field(unsigned char, preempt_count); \
|
||||
__common_field(int, pid); \
|
||||
__common_field(int, tgid); \
|
||||
\
|
||||
tstruct; \
|
||||
\
|
||||
return ret; \
|
||||
}
|
||||
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
/*
|
||||
* Stage 3 of the trace events.
|
||||
*
|
||||
|
|
@ -272,7 +485,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
|
|||
_TRACE_PROFILE_INIT(call) \
|
||||
}
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
|
||||
|
||||
#undef _TRACE_PROFILE
|
||||
#undef _TRACE_PROFILE_INIT
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
/* trace/<type>.h here */
|
||||
|
||||
#include <trace/sched.h>
|
||||
#include <trace/irq.h>
|
||||
#include <trace/lockdep.h>
|
||||
#include <trace/skb.h>
|
||||
#include <trace/kmem.h>
|
||||
|
|
@ -41,7 +41,6 @@ obj-$(CONFIG_KMEMTRACE) += kmemtrace.o
|
|||
obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
|
||||
obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
|
||||
obj-$(CONFIG_EVENT_TRACING) += trace_events.o
|
||||
obj-$(CONFIG_EVENT_TRACER) += events.o
|
||||
obj-$(CONFIG_EVENT_TRACING) += trace_export.o
|
||||
obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
|
||||
obj-$(CONFIG_EVENT_PROFILE) += trace_event_profile.o
|
||||
|
|
|
|||
|
|
@ -1,15 +0,0 @@
|
|||
/*
|
||||
* This is the place to register all trace points as events.
|
||||
*/
|
||||
|
||||
#include <linux/stringify.h>
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
|
||||
#include "trace_output.h"
|
||||
|
||||
#define TRACE_HEADER_MULTI_READ
|
||||
#include "trace_events_stage_1.h"
|
||||
#include "trace_events_stage_2.h"
|
||||
#include "trace_events_stage_3.h"
|
||||
|
||||
|
|
@ -1,39 +0,0 @@
|
|||
/*
|
||||
* Stage 1 of the trace events.
|
||||
*
|
||||
* Override the macros in <trace/trace_events.h> to include the following:
|
||||
*
|
||||
* struct ftrace_raw_<call> {
|
||||
* struct trace_entry ent;
|
||||
* <type> <item>;
|
||||
* <type2> <item2>[<len>];
|
||||
* [...]
|
||||
* };
|
||||
*
|
||||
* The <type> <item> is created by the __field(type, item) macro or
|
||||
* the __array(type2, item2, len) macro.
|
||||
* We simply do "type item;", and that will create the fields
|
||||
* in the structure.
|
||||
*/
|
||||
|
||||
#undef TRACE_FORMAT
|
||||
#define TRACE_FORMAT(call, proto, args, fmt)
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) type item[len];
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) type item;
|
||||
|
||||
#undef TP_STRUCT__entry
|
||||
#define TP_STRUCT__entry(args...) args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
|
||||
struct ftrace_raw_##name { \
|
||||
struct trace_entry ent; \
|
||||
tstruct \
|
||||
}; \
|
||||
static struct ftrace_event_call event_##name
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
|
|
@ -1,170 +0,0 @@
|
|||
/*
|
||||
* Stage 2 of the trace events.
|
||||
*
|
||||
* Override the macros in <trace/trace_events.h> to include the following:
|
||||
*
|
||||
* enum print_line_t
|
||||
* ftrace_raw_output_<call>(struct trace_iterator *iter, int flags)
|
||||
* {
|
||||
* struct trace_seq *s = &iter->seq;
|
||||
* struct ftrace_raw_<call> *field; <-- defined in stage 1
|
||||
* struct trace_entry *entry;
|
||||
* int ret;
|
||||
*
|
||||
* entry = iter->ent;
|
||||
*
|
||||
* if (entry->type != event_<call>.id) {
|
||||
* WARN_ON_ONCE(1);
|
||||
* return TRACE_TYPE_UNHANDLED;
|
||||
* }
|
||||
*
|
||||
* field = (typeof(field))entry;
|
||||
*
|
||||
* ret = trace_seq_printf(s, <TP_printk> "\n");
|
||||
* if (!ret)
|
||||
* return TRACE_TYPE_PARTIAL_LINE;
|
||||
*
|
||||
* return TRACE_TYPE_HANDLED;
|
||||
* }
|
||||
*
|
||||
* This is the method used to print the raw event to the trace
|
||||
* output format. Note, this is not needed if the data is read
|
||||
* in binary.
|
||||
*/
|
||||
|
||||
#undef __entry
|
||||
#define __entry field
|
||||
|
||||
#undef TP_printk
|
||||
#define TP_printk(fmt, args...) fmt "\n", args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
|
||||
enum print_line_t \
|
||||
ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
|
||||
{ \
|
||||
struct trace_seq *s = &iter->seq; \
|
||||
struct ftrace_raw_##call *field; \
|
||||
struct trace_entry *entry; \
|
||||
int ret; \
|
||||
\
|
||||
entry = iter->ent; \
|
||||
\
|
||||
if (entry->type != event_##call.id) { \
|
||||
WARN_ON_ONCE(1); \
|
||||
return TRACE_TYPE_UNHANDLED; \
|
||||
} \
|
||||
\
|
||||
field = (typeof(field))entry; \
|
||||
\
|
||||
ret = trace_seq_printf(s, #call ": " print); \
|
||||
if (!ret) \
|
||||
return TRACE_TYPE_PARTIAL_LINE; \
|
||||
\
|
||||
return TRACE_TYPE_HANDLED; \
|
||||
}
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
|
||||
/*
|
||||
* Setup the showing format of trace point.
|
||||
*
|
||||
* int
|
||||
* ftrace_format_##call(struct trace_seq *s)
|
||||
* {
|
||||
* struct ftrace_raw_##call field;
|
||||
* int ret;
|
||||
*
|
||||
* ret = trace_seq_printf(s, #type " " #item ";"
|
||||
* " offset:%u; size:%u;\n",
|
||||
* offsetof(struct ftrace_raw_##call, item),
|
||||
* sizeof(field.type));
|
||||
*
|
||||
* }
|
||||
*/
|
||||
|
||||
#undef TP_STRUCT__entry
|
||||
#define TP_STRUCT__entry(args...) args
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) \
|
||||
ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
|
||||
"offset:%u;\tsize:%u;\n", \
|
||||
(unsigned int)offsetof(typeof(field), item), \
|
||||
(unsigned int)sizeof(field.item)); \
|
||||
if (!ret) \
|
||||
return 0;
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) \
|
||||
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
|
||||
"offset:%u;\tsize:%u;\n", \
|
||||
(unsigned int)offsetof(typeof(field), item), \
|
||||
(unsigned int)sizeof(field.item)); \
|
||||
if (!ret) \
|
||||
return 0;
|
||||
|
||||
#undef __entry
|
||||
#define __entry REC
|
||||
|
||||
#undef TP_printk
|
||||
#define TP_printk(fmt, args...) "%s, %s\n", #fmt, __stringify(args)
|
||||
|
||||
#undef TP_fast_assign
|
||||
#define TP_fast_assign(args...) args
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
|
||||
static int \
|
||||
ftrace_format_##call(struct trace_seq *s) \
|
||||
{ \
|
||||
struct ftrace_raw_##call field; \
|
||||
int ret; \
|
||||
\
|
||||
tstruct; \
|
||||
\
|
||||
trace_seq_printf(s, "\nprint fmt: " print); \
|
||||
\
|
||||
return ret; \
|
||||
}
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
|
||||
#undef __field
|
||||
#define __field(type, item) \
|
||||
ret = trace_define_field(event_call, #type, #item, \
|
||||
offsetof(typeof(field), item), \
|
||||
sizeof(field.item)); \
|
||||
if (ret) \
|
||||
return ret;
|
||||
|
||||
#undef __array
|
||||
#define __array(type, item, len) \
|
||||
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
|
||||
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
|
||||
offsetof(typeof(field), item), \
|
||||
sizeof(field.item)); \
|
||||
if (ret) \
|
||||
return ret;
|
||||
|
||||
#undef TRACE_EVENT
|
||||
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
|
||||
int \
|
||||
ftrace_define_fields_##call(void) \
|
||||
{ \
|
||||
struct ftrace_raw_##call field; \
|
||||
struct ftrace_event_call *event_call = &event_##call; \
|
||||
int ret; \
|
||||
\
|
||||
__common_field(unsigned char, type); \
|
||||
__common_field(unsigned char, flags); \
|
||||
__common_field(unsigned char, preempt_count); \
|
||||
__common_field(int, pid); \
|
||||
__common_field(int, tgid); \
|
||||
\
|
||||
tstruct; \
|
||||
\
|
||||
return ret; \
|
||||
}
|
||||
|
||||
#include <trace/trace_events.h>
|
||||
Загрузка…
Ссылка в новой задаче