perf script: Move script_spec code to trace-event-scripting.c

The script_spec code is referenced in util/trace-event-scripting but
the list was in builtin-script, accessed via a function that required
a stub function in python.c. Move all the logic to
trace-event-scripting, with lookup and foreach functions exposed for
builtin-script's benefit.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Veronika Molnarova <vmolnaro@redhat.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Link: https://lore.kernel.org/r/20241119011644.971342-10-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 64 deletions

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 7d21a52ad94e..7158669239da 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2961,79 +2961,18 @@ static int __cmd_script(struct perf_script *script)
 	return ret;
 }
 
-struct script_spec {
-	struct list_head	node;
-	struct scripting_ops	*ops;
-	char			spec[];
-};
-
-static LIST_HEAD(script_specs);
-
-static struct script_spec *script_spec__new(const char *spec,
-					    struct scripting_ops *ops)
+static int list_available_languages_cb(struct scripting_ops *ops, const char *spec)
 {
-	struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
-
-	if (s != NULL) {
-		strcpy(s->spec, spec);
-		s->ops = ops;
-	}
-
-	return s;
-}
-
-static void script_spec__add(struct script_spec *s)
-{
-	list_add_tail(&s->node, &script_specs);
-}
-
-static struct script_spec *script_spec__find(const char *spec)
-{
-	struct script_spec *s;
-
-	list_for_each_entry(s, &script_specs, node)
-		if (strcasecmp(s->spec, spec) == 0)
-			return s;
-	return NULL;
-}
-
-int script_spec_register(const char *spec, struct scripting_ops *ops)
-{
-	struct script_spec *s;
-
-	s = script_spec__find(spec);
-	if (s)
-		return -1;
-
-	s = script_spec__new(spec, ops);
-	if (!s)
-		return -1;
-	else
-		script_spec__add(s);
-
+	fprintf(stderr, "  %-42s [%s]\n", spec, ops->name);
 	return 0;
 }
 
-static struct scripting_ops *script_spec__lookup(const char *spec)
-{
-	struct script_spec *s = script_spec__find(spec);
-	if (!s)
-		return NULL;
-
-	return s->ops;
-}
-
 static void list_available_languages(void)
 {
-	struct script_spec *s;
-
 	fprintf(stderr, "\n");
 	fprintf(stderr, "Scripting language extensions (used in "
 		"perf script -s [spec:]script.[spec]):\n\n");
-
-	list_for_each_entry(s, &script_specs, node)
-		fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);
-
+	script_spec__for_each(&list_available_languages_cb);
 	fprintf(stderr, "\n");
 }