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perf trace/scripting: Add support for script args

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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>
This commit is contained in:
Tom Zanussi
2009-12-15 02:53:35 -06:00
committed by Ingo Molnar
parent c249a4ce79
commit 586bc5cce8
5 changed files with 38 additions and 26 deletions
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36
tools/perf/util/trace-event-perl.c
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@@ -267,7 +267,7 @@ int common_lock_depth(struct scripting_context *context)
}
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 @@ static void run_start_sub(void)
/*
* 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 @@ static void print_unsupported_msg(void)
"\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();