perf tools: De-opt the parse_events function

Moving out the option parameter from parse_events function,
and adding new parse_events_option function instead.

The option parameter is used only to carry "struct perf_evlist"
pointer for chaining new events. Putting it away, enable us
to call parse_events from other places without using the
option parameter.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: acme@redhat.com
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Link: http://lkml.kernel.org/r/1310635534-4013-2-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 24 insertions, 14 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 8e2c85798185..80dc5b790e47 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -740,7 +740,7 @@ static bool force, append_file;
 const struct option record_options[] = {
         OPT_CALLBACK('e', "event", &evsel_list, "event",
                      "event selector. use 'perf list' to list available events",
-                     parse_events),
+                     parse_events_option),
         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
                      "event filter", parse_filter),
         OPT_INTEGER('p', "pid", &target_pid,
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 1d08c8084cc4..1ad04ce29c34 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1032,7 +1032,7 @@ static int stat__set_big_num(const struct option *opt __used,
 static const struct option options[] = {
         OPT_CALLBACK('e', "event", &evsel_list, "event",
                      "event selector. use 'perf list' to list available events",
-                     parse_events),
+                     parse_events_option),
         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
                      "event filter", parse_filter),
         OPT_BOOLEAN('i', "no-inherit", &no_inherit,
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index f2f3f4937aa2..a43433f08300 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -990,7 +990,7 @@ static const char * const top_usage[] = {
 static const struct option options[] = {
         OPT_CALLBACK('e', "event", &top.evlist, "event",
                      "event selector. use 'perf list' to list available events",
-                     parse_events),
+                     parse_events_option),
         OPT_INTEGER('c', "count", &default_interval,
                     "event period to sample"),
         OPT_INTEGER('p', "pid", &top.target_pid,
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index c0e21aec4896..4ea7e19f5251 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -478,7 +478,7 @@ parse_single_tracepoint_event(char *sys_name,
 /* sys + ':' + event + ':' + flags*/
 #define MAX_EVOPT_LEN   (MAX_EVENT_LENGTH * 2 + 2 + 128)
 static enum event_result
-parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
+parse_multiple_tracepoint_event(struct perf_evlist *evlist, char *sys_name,
                                 const char *evt_exp, char *flags)
 {
         char evt_path[MAXPATHLEN];
@@ -512,7 +512,7 @@ parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
                 if (len < 0)
                         return EVT_FAILED;
 
-                if (parse_events(opt, event_opt, 0))
+                if (parse_events(evlist, event_opt, 0))
                         return EVT_FAILED;
         }
 
@@ -520,7 +520,7 @@ parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
 }
 
 static enum event_result
-parse_tracepoint_event(const struct option *opt, const char **strp,
+parse_tracepoint_event(struct perf_evlist *evlist, const char **strp,
                        struct perf_event_attr *attr)
 {
         const char *evt_name;
@@ -560,8 +560,8 @@ parse_tracepoint_event(const struct option *opt, const char **strp,
                 return EVT_FAILED;
         if (strpbrk(evt_name, "*?")) {
                 *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */
-                return parse_multiple_tracepoint_event(opt, sys_name, evt_name,
-                                                       flags);
+                return parse_multiple_tracepoint_event(evlist, sys_name,
+                                                       evt_name, flags);
         } else {
                 return parse_single_tracepoint_event(sys_name, evt_name,
                                                      evt_length, attr, strp);
@@ -781,12 +781,12 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
  * Symbolic names are (almost) exactly matched.
  */
 static enum event_result
-parse_event_symbols(const struct option *opt, const char **str,
+parse_event_symbols(struct perf_evlist *evlist, const char **str,
                     struct perf_event_attr *attr)
 {
         enum event_result ret;
 
-        ret = parse_tracepoint_event(opt, str, attr);
+        ret = parse_tracepoint_event(evlist, str, attr);
         if (ret != EVT_FAILED)
                 goto modifier;
 
@@ -825,9 +825,8 @@ modifier:
         return ret;
 }
 
-int parse_events(const struct option *opt, const char *str, int unset __used)
+int parse_events(struct perf_evlist *evlist , const char *str, int unset __used)
 {
-        struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
         struct perf_event_attr attr;
         enum event_result ret;
         const char *ostr;
@@ -835,7 +834,7 @@ int parse_events(const struct option *opt, const char *str, int unset __used)
         for (;;) {
                 ostr = str;
                 memset(&attr, 0, sizeof(attr));
-                ret = parse_event_symbols(opt, &str, &attr);
+                ret = parse_event_symbols(evlist, &str, &attr);
                 if (ret == EVT_FAILED)
                         return -1;
 
@@ -866,6 +865,13 @@ int parse_events(const struct option *opt, const char *str, int unset __used)
         return 0;
 }
 
+int parse_events_option(const struct option *opt, const char *str,
+                        int unset __used)
+{
+        struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+        return parse_events(evlist, str, unset);
+}
+
 int parse_filter(const struct option *opt, const char *str,
                  int unset __used)
 {
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 746d3fcbfc2a..2f8e375e038d 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -8,6 +8,7 @@
 
 struct list_head;
 struct perf_evsel;
+struct perf_evlist;
 
 struct option;
 
@@ -24,7 +25,10 @@ const char *event_type(int type);
 const char *event_name(struct perf_evsel *event);
 extern const char *__event_name(int type, u64 config);
 
-extern int parse_events(const struct option *opt, const char *str, int unset);
+extern int parse_events_option(const struct option *opt, const char *str,
+                               int unset);
+extern int parse_events(struct perf_evlist *evlist, const char *str,
+                        int unset);
 extern int parse_filter(const struct option *opt, const char *str, int unset);
 
 #define EVENTS_HELP_MAX (128*1024)