linux-kernel - [PATCH -tip 12/12] perf: Export debuginfo object without dwarf support

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Message-ID: <20110330092646.2132.38892.stgit@ltc236.sdl.hitachi.co.jp>
Date:	Wed, 30 Mar 2011 18:26:46 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Ingo Molnar <mingo@...e.hu>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, 2nddept-manager@....hitachi.co.jp,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: [PATCH -tip 12/12] perf: Export debuginfo object without dwarf support

Export debuginfo object interfaces without dwarf support.
This allows other objects to include debuginfo object.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
---

 tools/perf/util/probe-finder.h |   56 +++++++++++++++++++++++++++++++++++++++-
 1 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index c478b42..ffa6377 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -3,6 +3,7 @@
 
 #include <stdbool.h>
 #include "util.h"
+#include "trace-event.h"	/* For __unused */
 #include "probe-event.h"
 
 #define MAX_PATH_LEN		 256
@@ -15,12 +16,12 @@ static inline int is_c_varname(const char *name)
 	return isalpha(name[0]) || name[0] == '_';
 }
 
+struct debuginfo;
+
 #ifdef DWARF_SUPPORT
 
 #include "dwarf-aux.h"
 
-/* TODO: export debuginfo data structure even if no dwarf support */
-
 /* debug information structure */
 struct debuginfo {
 	Dwarf		*dbg;
@@ -103,6 +104,57 @@ struct line_finder {
 	int			found;
 };
 
+#else
+
+static inline struct debuginfo *debuginfo__new(const char *path __unused)
+{
+	return NULL;
+}
+
+static inline struct debuginfo *
+debuginfo__new_online_kernel(unsigned long addr __unused)
+{
+	return NULL;
+}
+
+static inline void debuginfo__delete(struct debuginfo *self __unused)
+{
+	return;
+}
+
+static inline int debuginfo__find_trace_events(struct debuginfo *self __unused,
+				struct perf_probe_event *pev __unused,
+				struct probe_trace_event **tevs __unused,
+				int max_tevs __unused)
+{
+	return -ENOTSUP;
+}
+
+/* Find a perf_probe_point from debuginfo */
+static inline int debuginfo__find_probe_point(struct debuginfo *self __unused,
+					unsigned long addr __unused,
+					struct perf_probe_point *ppt __unused)
+{
+	return -ENOTSUP;
+}
+
+/* Find a line range */
+static inline int debuginfo__find_line_range(struct debuginfo *self __unused,
+					     struct line_range *lr __unused)
+{
+	return -ENOTSUP;
+}
+/* Find available variables */
+static inline int debuginfo__find_available_vars_at(
+					struct debuginfo *self __unused,
+					struct perf_probe_event *pev __unused,
+					struct variable_list **vls __unused,
+					int max_points __unused,
+					bool externs __unused)
+{
+	return -ENOTSUP;
+}
+
 #endif /* DWARF_SUPPORT */
 
 #endif /*_PROBE_FINDER_H */

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