perf evswitch: Introduce init() method to set the on/off evsels from the command...

Another step in having all the boilerplate in just one place to then use
in the other tools.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: William Cohen <wcohen@redhat.com>
Link: https://lkml.kernel.org/n/tip-snreb1wmwyjei3eefwotxp1l@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 2a5b8af..1764efd 100644 (file)
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -3868,24 +3868,9 @@ int cmd_script(int argc, const char **argv)
                                                  script.range_num);
        }
 
-       if (script.evswitch.on_name) {
-               script.evswitch.on = perf_evlist__find_evsel_by_str(session->evlist, script.evswitch.on_name);
-               if (script.evswitch.on == NULL) {
-                       fprintf(stderr, "switch-on event not found (%s)\n", script.evswitch.on_name);
-                       err = -ENOENT;
-                       goto out_delete;
-               }
-               script.evswitch.discarding = true;
-       }
-
-       if (script.evswitch.off_name) {
-               script.evswitch.off = perf_evlist__find_evsel_by_str(session->evlist, script.evswitch.off_name);
-               if (script.evswitch.off == NULL) {
-                       fprintf(stderr, "switch-off event not found (%s)\n", script.evswitch.off_name);
-                       err = -ENOENT;
-                       goto out_delete;
-               }
-       }
+       err = evswitch__init(&script.evswitch, session->evlist, stderr);
+       if (err)
+               goto out_delete;
 
        err = __cmd_script(&script);
 

diff --git a/tools/perf/util/evswitch.c b/tools/perf/util/evswitch.c
index c87f988..b57b5f0 100644 (file)
--- a/tools/perf/util/evswitch.c
+++ b/tools/perf/util/evswitch.c
@@ -2,6 +2,7 @@
 // Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 
 #include "evswitch.h"
+#include "evlist.h"
 
 bool evswitch__discard(struct evswitch *evswitch, struct evsel *evsel)
 {
@@ -29,3 +30,25 @@ bool evswitch__discard(struct evswitch *evswitch, struct evsel *evsel)
 
        return false;
 }
+
+int evswitch__init(struct evswitch *evswitch, struct evlist *evlist, FILE *fp)
+{
+       if (evswitch->on_name) {
+               evswitch->on = perf_evlist__find_evsel_by_str(evlist, evswitch->on_name);
+               if (evswitch->on == NULL) {
+                       fprintf(fp, "switch-on event not found (%s)\n", evswitch->on_name);
+                       return -ENOENT;
+               }
+               evswitch->discarding = true;
+       }
+
+       if (evswitch->off_name) {
+               evswitch->off = perf_evlist__find_evsel_by_str(evlist, evswitch->off_name);
+               if (evswitch->off == NULL) {
+                       fprintf(fp, "switch-off event not found (%s)\n", evswitch->off_name);
+                       return -ENOENT;
+               }
+       }
+
+       return 0;
+}

diff --git a/tools/perf/util/evswitch.h b/tools/perf/util/evswitch.h
index 94220d1..fd30460 100644 (file)
--- a/tools/perf/util/evswitch.h
+++ b/tools/perf/util/evswitch.h
@@ -4,8 +4,10 @@
 #define __PERF_EVSWITCH_H 1
 
 #include <stdbool.h>
+#include <stdio.h>
 
 struct evsel;
+struct evlist;
 
 struct evswitch {
        struct evsel *on, *off;
@@ -14,6 +16,8 @@ struct evswitch {
        bool         show_on_off_events;
 };
 
+int evswitch__init(struct evswitch *evswitch, struct evlist *evlist, FILE *fp);
+
 bool evswitch__discard(struct evswitch *evswitch, struct evsel *evsel);
 
 #define OPTS_EVSWITCH(evswitch)                                                                  \