Commit-ID: a2525a0852d81b1cf1155d75d1e3db9682fee191
Gitweb: http://git.kernel.org/tip/a2525a0852d81b1cf1155d75d1e3db9682fee191
Author: Steven Rostedt <srostedt@xxxxxxxxxx>
AuthorDate: Fri, 6 Apr 2012 00:48:02 +0200
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Wed, 25 Apr 2012 13:35:35 +0200
parse-events: Let pevent_free() take a NULL pointer
The pevent_free() should ack like other free()s and allow a
NULL pointer to be passed to it which makes error handling a bit
easier for the users of pevent_free().
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Arun Sharma <asharma@xxxxxx>
Cc: Namhyung Kim <namhyung.kim@xxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
tools/lib/traceevent/event-parse.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index cdb32c7..4d5092f 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4960,13 +4960,20 @@ static void free_event(struct event_format *event)
*/
void pevent_free(struct pevent *pevent)
{
- struct cmdline_list *cmdlist = pevent->cmdlist, *cmdnext;
- struct func_list *funclist = pevent->funclist, *funcnext;
- struct printk_list *printklist = pevent->printklist, *printknext;
+ struct cmdline_list *cmdlist, *cmdnext;
+ struct func_list *funclist, *funcnext;
+ struct printk_list *printklist, *printknext;
struct pevent_function_handler *func_handler;
struct event_handler *handle;
int i;
+ if (!pevent)
+ return;
+
+ cmdlist = pevent->cmdlist;
+ funclist = pevent->funclist;
+ printklist = pevent->printklist;
+
pevent->ref_count--;
if (pevent->ref_count)
return;
--
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