perf tools: Add config options support for event parsing

Adding a new rule to the event grammar to be able to specify
values of additional attributes of symbolic event.

The new syntax for event symbolic definition is:

event_legacy_symbol:  PE_NAME_SYM '/' event_config '/' |
                      PE_NAME_SYM sep_slash_dc

event_config:         event_config ',' event_term | event_term

event_term:           PE_NAME '=' PE_NAME |
                      PE_NAME '=' PE_VALUE
                      PE_NAME

sep_slash_dc: '/' | ':' |

At the moment the config options are hardcoded to be used for legacy
symbol events to define several perf_event_attr fields. It is:

  'config'   to define perf_event_attr::config
  'config1'  to define perf_event_attr::config1
  'config2'  to define perf_event_attr::config2
  'period'   to define perf_event_attr::sample_period

Legacy events could be now specified as:
  cycles/period=100000/

If term is specified without the value assignment, then 1 is
assigned by default.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-mgkavww9790jbt2jdkooyv4q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 13 insertions, 10 deletions

diff --git a/tools/perf/util/parse-events-bison.h b/tools/perf/util/parse-events-bison.h
index 097a6323e6a9..c58b76584f92 100644
--- a/tools/perf/util/parse-events-bison.h
+++ b/tools/perf/util/parse-events-bison.h
@@ -41,14 +41,15 @@
      PE_VALUE = 258,
      PE_VALUE_SYM = 259,
      PE_RAW = 260,
-     PE_NAME = 261,
-     PE_MODIFIER_EVENT = 262,
-     PE_MODIFIER_BP = 263,
-     PE_NAME_CACHE_TYPE = 264,
-     PE_NAME_CACHE_OP_RESULT = 265,
-     PE_PREFIX_MEM = 266,
-     PE_PREFIX_RAW = 267,
-     PE_ERROR = 268
+     PE_TERM = 261,
+     PE_NAME = 262,
+     PE_MODIFIER_EVENT = 263,
+     PE_MODIFIER_BP = 264,
+     PE_NAME_CACHE_TYPE = 265,
+     PE_NAME_CACHE_OP_RESULT = 266,
+     PE_PREFIX_MEM = 267,
+     PE_PREFIX_RAW = 268,
+     PE_ERROR = 269
    };
 #endif
 
@@ -59,15 +60,17 @@ typedef union YYSTYPE
 {
 
 /* Line 1685 of yacc.c  */
-#line 42 "util/parse-events.y"
+#line 45 "util/parse-events.y"
 
         char *str;
         unsigned long num;
+        struct list_head *head;
+        struct parse_events__term *term;
 
 
 
 /* Line 1685 of yacc.c  */
-#line 71 "util/parse-events-bison.h"
+#line 74 "util/parse-events-bison.h"
 } YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
 # define yystype YYSTYPE /* obsolescent; will be withdrawn */