linux-kernel - [PATCH 20/76] tools lib traceevent: Add const qualifier to string arguments

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Date:	Thu, 18 Jul 2013 16:49:07 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Namhyung Kim <namhyung.kim@....com>,
	Namhyung Kim <namhyung@...nel.org>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 20/76] tools lib traceevent: Add const qualifier to string arguments

From: Namhyung Kim <namhyung.kim@....com>

If pevent_register_event_handler() received a string literal as
@sys_name or @event_name parameter, it emitted a warning about const
qualifier removal.  Since they're not modified in the function we can
make it have const qualifier.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Acked-by: Steven Rostedt <rostedt@...dmis.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Steven Rostedt <rostedt@...dmis.org>
Link: http://lkml.kernel.org/r/1370323231-14022-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/lib/traceevent/event-parse.c | 7 +++----
 tools/lib/traceevent/event-parse.h | 3 ++-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 82b0606..d1c2a6a 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5450,10 +5450,9 @@ int pevent_register_print_function(struct pevent *pevent,
  * If @id is >= 0, then it is used to find the event.
  * else @sys_name and @event_name are used.
  */
-int pevent_register_event_handler(struct pevent *pevent,
-				  int id, char *sys_name, char *event_name,
-				  pevent_event_handler_func func,
-				  void *context)
+int pevent_register_event_handler(struct pevent *pevent, int id,
+				  const char *sys_name, const char *event_name,
+				  pevent_event_handler_func func, void *context)
 {
 	struct event_format *event;
 	struct event_handler *handle;
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 7be7e89..bfceab9 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -561,7 +561,8 @@ int pevent_print_num_field(struct trace_seq *s, const char *fmt,
 			   struct event_format *event, const char *name,
 			   struct pevent_record *record, int err);
 
-int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
+int pevent_register_event_handler(struct pevent *pevent, int id,
+				  const char *sys_name, const char *event_name,
 				  pevent_event_handler_func func, void *context);
 int pevent_register_print_function(struct pevent *pevent,
 				   pevent_func_handler func,
-- 
1.8.1.4

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