events: Rename TRACE_EVENT_TEMPLATE() to DECLARE_EVENT_CLASS()
It is not quite obvious at first sight what TRACE_EVENT_TEMPLATE
does: does it define an event as well beyond defining a template?
To clarify this, rename it to DECLARE_EVENT_CLASS, which follows
the various 'DECLARE_*()' idioms we already have in the kernel:
DECLARE_EVENT_CLASS(class)
DEFINE_EVENT(class, event1)
DEFINE_EVENT(class, event2)
DEFINE_EVENT(class, event3)
To complete this logic we should also rename TRACE_EVENT() to:
DEFINE_SINGLE_EVENT(single_event)
... but in a more quiet moment of the kernel cycle.
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4B0E286A.2000405@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 7063383..f59604e 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -280,7 +280,7 @@
* TRACE_EVENT_FN to perform any (un)registration work.
*/
-#define TRACE_EVENT_TEMPLATE(name, proto, args, tstruct, assign, print)
+#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print)
#define DEFINE_EVENT(template, name, proto, args) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index 5d7d855..5acfb1e 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -71,7 +71,7 @@
#undef TRACE_EVENT
#undef TRACE_EVENT_FN
-#undef TRACE_EVENT_TEMPLATE
+#undef DECLARE_EVENT_CLASS
#undef DEFINE_EVENT
#undef DEFINE_EVENT_PRINT
#undef TRACE_HEADER_MULTI_READ
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 238f74b..5ce7950 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -83,7 +83,7 @@
* (NOTE: the 'rq' argument is not used by generic trace events,
* but used by the latency tracer plugin. )
*/
-TRACE_EVENT_TEMPLATE(sched_wakeup_template,
+DECLARE_EVENT_CLASS(sched_wakeup_template,
TP_PROTO(struct rq *rq, struct task_struct *p, int success),
@@ -197,7 +197,7 @@
__entry->orig_cpu, __entry->dest_cpu)
);
-TRACE_EVENT_TEMPLATE(sched_process_template,
+DECLARE_EVENT_CLASS(sched_process_template,
TP_PROTO(struct task_struct *p),
@@ -316,7 +316,7 @@
* XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
* adding sched_stat support to SCHED_FIFO/RR would be welcome.
*/
-TRACE_EVENT_TEMPLATE(sched_stat_template,
+DECLARE_EVENT_CLASS(sched_stat_template,
TP_PROTO(struct task_struct *tsk, u64 delay),
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index b046177..2c9c073 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -19,17 +19,17 @@
#include <linux/ftrace_event.h>
/*
- * TRACE_EVENT_TEMPLATE can be used to add a generic function
+ * DECLARE_EVENT_CLASS can be used to add a generic function
* handlers for events. That is, if all events have the same
* parameters and just have distinct trace points.
* Each tracepoint can be defined with DEFINE_EVENT and that
- * will map the TRACE_EVENT_TEMPLATE to the tracepoint.
+ * will map the DECLARE_EVENT_CLASS to the tracepoint.
*
* TRACE_EVENT is a one to one mapping between tracepoint and template.
*/
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
- TRACE_EVENT_TEMPLATE(name, \
+ DECLARE_EVENT_CLASS(name, \
PARAMS(proto), \
PARAMS(args), \
PARAMS(tstruct), \
@@ -56,8 +56,8 @@
#undef TP_STRUCT__entry
#define TP_STRUCT__entry(args...) args
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(name, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
struct ftrace_raw_##name { \
struct trace_entry ent; \
tstruct \
@@ -115,8 +115,8 @@
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
struct ftrace_data_offsets_##call { \
tstruct; \
};
@@ -203,8 +203,8 @@
#undef TP_perf_assign
#define TP_perf_assign(args...)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, func, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
static int \
ftrace_format_setup_##call(struct ftrace_event_call *unused, \
struct trace_seq *s) \
@@ -321,8 +321,8 @@
ftrace_print_symbols_seq(p, value, symbols); \
})
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static enum print_line_t \
ftrace_raw_output_id_##call(int event_id, const char *name, \
struct trace_iterator *iter, int flags) \
@@ -428,8 +428,8 @@
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, func, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
static int \
ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
@@ -480,8 +480,8 @@
#undef __string
#define __string(item, src) __dynamic_array(char, item, strlen(src) + 1)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static inline int ftrace_get_offsets_##call( \
struct ftrace_data_offsets_##call *__data_offsets, proto) \
{ \
@@ -521,8 +521,8 @@
*
*/
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print)
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, name, proto, args) \
@@ -681,8 +681,8 @@
#define __assign_str(dst, src) \
strcpy(__get_str(dst), src);
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
\
static void ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \
proto) \
@@ -764,8 +764,8 @@
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print)
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
@@ -885,8 +885,8 @@
#undef __perf_count
#define __perf_count(c) __count = (c)
-#undef TRACE_EVENT_TEMPLATE
-#define TRACE_EVENT_TEMPLATE(call, proto, args, tstruct, assign, print) \
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static void \
ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
proto) \