perf/tool: Use data struct for arg passing in event parse function

Moving all the bison arguments into the structure. In upcomming
patches we are going to:

  - add more arguments
  - reuse the grammer for term parsing

so it's more clear to pack/separate related arguments.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1339741902-8449-10-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

3 files changed, 50 insertions, 26 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 05dbc8b3c767..c71b29ad26ec 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -26,7 +26,7 @@ struct event_symbol {
 #ifdef PARSER_DEBUG
 extern int parse_events_debug;
 #endif
-int parse_events_parse(struct list_head *list, int *idx);
+int parse_events_parse(void *data);
 
 #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
 #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
@@ -789,25 +789,27 @@ int parse_events_modifier(struct list_head *list, char *str)
 
 int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
 {
-        LIST_HEAD(list);
-        LIST_HEAD(list_tmp);
+        struct parse_events_data__events data = {
+                .list = LIST_HEAD_INIT(data.list),
+                .idx  = evlist->nr_entries,
+        };
         YY_BUFFER_STATE buffer;
-        int ret, idx = evlist->nr_entries;
+        int ret;
 
         buffer = parse_events__scan_string(str);
 
 #ifdef PARSER_DEBUG
         parse_events_debug = 1;
 #endif
-        ret = parse_events_parse(&list, &idx);
+        ret = parse_events_parse(&data);
 
         parse_events__flush_buffer(buffer);
         parse_events__delete_buffer(buffer);
         parse_events_lex_destroy();
 
         if (!ret) {
-                int entries = idx - evlist->nr_entries;
-                perf_evlist__splice_list_tail(evlist, &list, entries);
+                int entries = data.idx - evlist->nr_entries;
+                perf_evlist__splice_list_tail(evlist, &data.list, entries);
                 return 0;
         }
 
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 8cac57ab4ee6..dc3c83a0ab8a 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -63,6 +63,11 @@ struct parse_events__term {
         struct list_head list;
 };
 
+struct parse_events_data__events {
+        struct list_head list;
+        int idx;
+};
+
 int parse_events__is_hardcoded_term(struct parse_events__term *term);
 int parse_events__term_num(struct parse_events__term **_term,
                            int type_term, char *config, long num);
@@ -83,8 +88,7 @@ int parse_events_add_pmu(struct list_head **list, int *idx,
                          char *pmu , struct list_head *head_config);
 void parse_events_update_lists(struct list_head *list_event,
                                struct list_head *list_all);
-void parse_events_error(struct list_head *list_all,
-                        int *idx, char const *msg);
+void parse_events_error(void *data, char const *msg);
 int parse_events__test(void);
 
 void print_events(const char *event_glob);
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 362cc59332ae..e533bf72ba9c 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -1,7 +1,6 @@
 
 %name-prefix "parse_events_"
-%parse-param {struct list_head *list_all}
-%parse-param {int *idx}
+%parse-param {void *_data}
 
 %{
 
@@ -64,18 +63,22 @@ events ',' event | event
 event:
 event_def PE_MODIFIER_EVENT
 {
+        struct parse_events_data__events *data = _data;
+
         /*
          * Apply modifier on all events added by single event definition
          * (there could be more events added for multiple tracepoint
          * definitions via '*?'.
          */
         ABORT_ON(parse_events_modifier($1, $2));
-        parse_events_update_lists($1, list_all);
+        parse_events_update_lists($1, &data->list);
 }
 |
 event_def
 {
-        parse_events_update_lists($1, list_all);
+        struct parse_events_data__events *data = _data;
+
+        parse_events_update_lists($1, &data->list);
 }
 
 event_def: event_pmu |
@@ -89,9 +92,10 @@ event_def: event_pmu |
 event_pmu:
 PE_NAME '/' event_config '/'
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_pmu(&list, idx, $1, $3));
+        ABORT_ON(parse_events_add_pmu(&list, &data->idx, $1, $3));
         parse_events__free_terms($3);
         $$ = list;
 }
@@ -99,91 +103,106 @@ PE_NAME '/' event_config '/'
 event_legacy_symbol:
 PE_VALUE_SYM '/' event_config '/'
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
         int type = $1 >> 16;
         int config = $1 & 255;
 
-        ABORT_ON(parse_events_add_numeric(&list, idx, type, config, $3));
+        ABORT_ON(parse_events_add_numeric(&list, &data->idx,
+                                          type, config, $3));
         parse_events__free_terms($3);
         $$ = list;
 }
 |
 PE_VALUE_SYM sep_slash_dc
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
         int type = $1 >> 16;
         int config = $1 & 255;
 
-        ABORT_ON(parse_events_add_numeric(&list, idx, type, config, NULL));
+        ABORT_ON(parse_events_add_numeric(&list, &data->idx,
+                                          type, config, NULL));
         $$ = list;
 }
 
 event_legacy_cache:
 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_cache(&list, idx, $1, $3, $5));
+        ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, $3, $5));
         $$ = list;
 }
 |
 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_cache(&list, idx, $1, $3, NULL));
+        ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, $3, NULL));
         $$ = list;
 }
 |
 PE_NAME_CACHE_TYPE
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_cache(&list, idx, $1, NULL, NULL));
+        ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, NULL, NULL));
         $$ = list;
 }
 
 event_legacy_mem:
 PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_breakpoint(&list, idx, (void *) $2, $4));
+        ABORT_ON(parse_events_add_breakpoint(&list, &data->idx,
+                                             (void *) $2, $4));
         $$ = list;
 }
 |
 PE_PREFIX_MEM PE_VALUE sep_dc
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_breakpoint(&list, idx, (void *) $2, NULL));
+        ABORT_ON(parse_events_add_breakpoint(&list, &data->idx,
+                                             (void *) $2, NULL));
         $$ = list;
 }
 
 event_legacy_tracepoint:
 PE_NAME ':' PE_NAME
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_tracepoint(&list, idx, $1, $3));
+        ABORT_ON(parse_events_add_tracepoint(&list, &data->idx, $1, $3));
         $$ = list;
 }
 
 event_legacy_numeric:
 PE_VALUE ':' PE_VALUE
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_numeric(&list, idx, $1, $3, NULL));
+        ABORT_ON(parse_events_add_numeric(&list, &data->idx, $1, $3, NULL));
         $$ = list;
 }
 
 event_legacy_raw:
 PE_RAW
 {
+        struct parse_events_data__events *data = _data;
         struct list_head *list = NULL;
 
-        ABORT_ON(parse_events_add_numeric(&list, idx, PERF_TYPE_RAW, $1, NULL));
+        ABORT_ON(parse_events_add_numeric(&list, &data->idx,
+                                          PERF_TYPE_RAW, $1, NULL));
         $$ = list;
 }
 
@@ -267,8 +286,7 @@ sep_slash_dc: '/' | ':' |
 
 %%
 
-void parse_events_error(struct list_head *list_all __used,
-                        int *idx __used,
+void parse_events_error(void *data __used,
                         char const *msg __used)
 {
 }