perf trace/scripting: Add support for script args
One oversight of the original scripting_ops patch was a lack of
support for passing args to handler scripts. This adds
argc/argv to the start_script() scripting_op, and changes the
rw-by-file script to take 'comm' arg rather than the 'perf'
value currently hard-coded. It also takes the opportunity to do
some related minor cleanup.
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference: <1260867220-15699-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/trace-event-perl.c b/tools/perf/util/trace-event-perl.c
index a5ffe60..6f10e76 100644
--- a/tools/perf/util/trace-event-perl.c
+++ b/tools/perf/util/trace-event-perl.c
@@ -267,7 +267,7 @@
}
static void perl_process_event(int cpu, void *data,
- int size __attribute((unused)),
+ int size __unused,
unsigned long long nsecs, char *comm)
{
struct format_field *field;
@@ -359,28 +359,42 @@
/*
* Start trace script
*/
-static int perl_start_script(const char *script)
+static int perl_start_script(const char *script, int argc, const char **argv)
{
- const char *command_line[2] = { "", NULL };
+ const char **command_line;
+ int i, err = 0;
+ command_line = malloc((argc + 2) * sizeof(const char *));
+ command_line[0] = "";
command_line[1] = script;
+ for (i = 2; i < argc + 2; i++)
+ command_line[i] = argv[i - 2];
my_perl = perl_alloc();
perl_construct(my_perl);
- if (perl_parse(my_perl, xs_init, 2, (char **)command_line,
- (char **)NULL))
- return -1;
+ if (perl_parse(my_perl, xs_init, argc + 2, (char **)command_line,
+ (char **)NULL)) {
+ err = -1;
+ goto error;
+ }
perl_run(my_perl);
- if (SvTRUE(ERRSV))
- return -1;
+ if (SvTRUE(ERRSV)) {
+ err = -1;
+ goto error;
+ }
run_start_sub();
+ free(command_line);
fprintf(stderr, "perf trace started with Perl script %s\n\n", script);
-
return 0;
+error:
+ perl_free(my_perl);
+ free(command_line);
+
+ return err;
}
/*
@@ -579,7 +593,9 @@
"\n etc.\n");
}
-static int perl_start_script_unsupported(const char *script __unused)
+static int perl_start_script_unsupported(const char *script __unused,
+ int argc __unused,
+ const char **argv __unused)
{
print_unsupported_msg();