From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Jiri Olsa <jolsa@redhat.com>
Subject: [PATCH 6/9] ftrace: Add FTRACE_ENTRY_REG macro to allow event registration
Date: Wed, 22 Feb 2012 09:40:42 -0500 [thread overview]
Message-ID: <20120222144210.866394007@goodmis.org> (raw)
In-Reply-To: 20120222144036.824378742@goodmis.org
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From: Jiri Olsa <jolsa@redhat.com>
Adding FTRACE_ENTRY_REG macro so particular ftrace entries
could specify registration function and thus become accesible
via perf.
This will be used in upcomming patch for function trace.
Link: http://lkml.kernel.org/r/1329317514-8131-5-git-send-email-jolsa@redhat.com
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/trace.h | 4 ++++
kernel/trace/trace_export.c | 18 ++++++++++++++++--
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 55c6ea0..638476a 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -68,6 +68,10 @@ enum trace_type {
#undef FTRACE_ENTRY_DUP
#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk)
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \
+ FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
+
#include "trace_entries.h"
/*
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index bbeec31..f74de86 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -18,6 +18,14 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM ftrace
+/*
+ * The FTRACE_ENTRY_REG macro allows ftrace entry to define register
+ * function and thus become accesible via perf.
+ */
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \
+ FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
+
/* not needed for this file */
#undef __field_struct
#define __field_struct(type, item)
@@ -152,13 +160,14 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
#undef F_printk
#define F_printk(fmt, args...) #fmt ", " __stringify(args)
-#undef FTRACE_ENTRY
-#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, regfn)\
\
struct ftrace_event_class event_class_ftrace_##call = { \
.system = __stringify(TRACE_SYSTEM), \
.define_fields = ftrace_define_fields_##call, \
.fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
+ .reg = regfn, \
}; \
\
struct ftrace_event_call __used event_##call = { \
@@ -170,4 +179,9 @@ struct ftrace_event_call __used event_##call = { \
struct ftrace_event_call __used \
__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \
+ FTRACE_ENTRY_REG(call, struct_name, etype, \
+ PARAMS(tstruct), PARAMS(print), NULL)
+
#include "trace_entries.h"
--
1.7.8.3
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next prev parent reply other threads:[~2012-02-22 14:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-22 14:40 [PATCH 0/9] [GIT PULL] perf/tracing: fixes and add function trace to perf Steven Rostedt
2012-02-22 14:40 ` [PATCH 1/9] tracing: Dont print an extra separator of flags Steven Rostedt
2012-02-22 14:40 ` [PATCH 2/9] tracing: Dont use p->len field to determine output in __print_*() functions Steven Rostedt
2012-02-22 14:40 ` [PATCH 3/9] ftrace: Add enable/disable ftrace_ops control interface Steven Rostedt
2012-02-22 14:40 ` [PATCH 4/9] ftrace, perf: Add open/close tracepoint perf registration actions Steven Rostedt
2012-02-22 14:40 ` [PATCH 5/9] ftrace, perf: Add add/del " Steven Rostedt
2012-02-22 14:40 ` Steven Rostedt [this message]
2012-02-22 14:40 ` [PATCH 7/9] ftrace, perf: Add support to use function tracepoint in perf Steven Rostedt
2012-02-22 14:40 ` [PATCH 8/9] ftrace: Allow to specify filter field type for ftrace events Steven Rostedt
2012-02-22 14:40 ` [PATCH 9/9] ftrace, perf: Add filter support for function trace event Steven Rostedt
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