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authorFrederic Weisbecker <fweisbec@gmail.com>2009-08-17 23:07:51 +0200
committerIngo Molnar <mingo@elte.hu>2009-08-18 00:00:19 +0200
commit3f9edc2382d5f7c97c693838abb207a9d6bab1fa (patch)
tree0b51d6d9823d5adca9c8369c3d22966346bb38ac /tools
parent9df37ddd81f54dd41dc4958055c3a3c9b6840aef (diff)
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perf tools: Make trace event format parser aware of cast to pointers
The ftrace event format parser handles the usual casts but not the cast to pointers. Such casts have been introduced recently with the module trace events and raise the following parsing error: Fatal: bad op token ) This is because it considers the "*" character as a binary operator. Make it then aware of casts to pointers. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1250543271-8383-4-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/trace-event-parse.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index ead6a9ad359..b53b27f34e4 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1462,6 +1462,7 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
{
struct print_arg *item_arg;
enum event_type type;
+ int ptr_cast = 0;
char *token;
type = process_arg(event, arg, &token);
@@ -1469,11 +1470,26 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
if (type == EVENT_ERROR)
return EVENT_ERROR;
- if (type == EVENT_OP)
- type = process_op(event, arg, &token);
+ if (type == EVENT_OP) {
+ /* handle the ptr casts */
+ if (!strcmp(token, "*")) {
+ /*
+ * FIXME: should we zapp whitespaces before ')' ?
+ * (may require a peek_token_item())
+ */
+ if (__peek_char() == ')') {
+ ptr_cast = 1;
+ free_token(token);
+ type = read_token_item(&token);
+ }
+ }
+ if (!ptr_cast) {
+ type = process_op(event, arg, &token);
- if (type == EVENT_ERROR)
- return EVENT_ERROR;
+ if (type == EVENT_ERROR)
+ return EVENT_ERROR;
+ }
+ }
if (test_type_token(type, token, EVENT_DELIM, (char *)")")) {
free_token(token);
@@ -1499,6 +1515,13 @@ process_paren(struct event *event, struct print_arg *arg, char **tok)
item_arg = malloc_or_die(sizeof(*item_arg));
arg->type = PRINT_TYPE;
+ if (ptr_cast) {
+ char *old = arg->atom.atom;
+
+ arg->atom.atom = malloc_or_die(strlen(old + 3));
+ sprintf(arg->atom.atom, "%s *", old);
+ free(old);
+ }
arg->typecast.type = arg->atom.atom;
arg->typecast.item = item_arg;
type = process_arg_token(event, item_arg, &token, type);