static inline struct event_format *find_cache_event(struct perf_evsel *evsel)
{
static char ev_name[256];
struct event_format *event;
int type = evsel->attr.config;
/*
* XXX: Do we really need to cache this since now we have evsel->tp_format
* cached already? Need to re-read this "cache" routine that as well calls
* define_event_symbols() :-\
*/
if (events[type])
return events[type];
events[type] = event = evsel->tp_format;
if (!event)
return NULL;
sprintf(ev_name, "%s__%s", event->system, event->name);
define_event_symbols(event, ev_name, event->print_fmt.args);
return event;
}
static void define_event_symbols(struct event *event,
struct print_arg *args)
{
switch (args->type) {
case PRINT_NULL:
break;
case PRINT_ATOM:
define_value(PRINT_FLAGS, event->id, cur_field_name, "0",
args->atom.atom);
break;
case PRINT_FIELD:
cur_field_name = args->field.name;
break;
case PRINT_FLAGS:
define_event_symbols(event, args->flags.field);
define_field(PRINT_FLAGS, event->id, cur_field_name,
args->flags.delim);
define_values(PRINT_FLAGS, args->flags.flags, event->id,
cur_field_name);
break;
case PRINT_SYMBOL:
define_event_symbols(event, args->symbol.field);
define_field(PRINT_SYMBOL, event->id, cur_field_name, NULL);
define_values(PRINT_SYMBOL, args->symbol.symbols, event->id,
cur_field_name);
break;
case PRINT_STRING:
break;
case PRINT_TYPE:
define_event_symbols(event, args->typecast.item);
break;
case PRINT_OP:
define_event_symbols(event, args->op.left);
define_event_symbols(event, args->op.right);
break;
default:
/* we should warn... */
return;
}
if (args->next)
define_event_symbols(event, args->next);
}
static void perl_process_tracepoint(struct perf_sample *sample,
struct perf_evsel *evsel,
struct thread *thread)
{
struct event_format *event = evsel->tp_format;
struct format_field *field;
static char handler[256];
unsigned long long val;
unsigned long s, ns;
int pid;
int cpu = sample->cpu;
void *data = sample->raw_data;
unsigned long long nsecs = sample->time;
const char *comm = thread__comm_str(thread);
dSP;
if (evsel->attr.type != PERF_TYPE_TRACEPOINT)
return;
if (!event)
die("ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
pid = raw_field_value(event, "common_pid", data);
sprintf(handler, "%s::%s", event->system, event->name);
if (!test_and_set_bit(event->id, events_defined))
define_event_symbols(event, handler, event->print_fmt.args);
s = nsecs / NSECS_PER_SEC;
ns = nsecs - s * NSECS_PER_SEC;
scripting_context->event_data = data;
scripting_context->pevent = evsel->tp_format->pevent;
ENTER;
SAVETMPS;
PUSHMARK(SP);
XPUSHs(sv_2mortal(newSVpv(handler, 0)));
XPUSHs(sv_2mortal(newSViv(PTR2IV(scripting_context))));
XPUSHs(sv_2mortal(newSVuv(cpu)));
XPUSHs(sv_2mortal(newSVuv(s)));
XPUSHs(sv_2mortal(newSVuv(ns)));
XPUSHs(sv_2mortal(newSViv(pid)));
XPUSHs(sv_2mortal(newSVpv(comm, 0)));
/* common fields other than pid can be accessed via xsub fns */
for (field = event->format.fields; field; field = field->next) {
if (field->flags & FIELD_IS_STRING) {
int offset;
if (field->flags & FIELD_IS_DYNAMIC) {
offset = *(int *)(data + field->offset);
offset &= 0xffff;
} else
offset = field->offset;
XPUSHs(sv_2mortal(newSVpv((char *)data + offset, 0)));
} else { /* FIELD_IS_NUMERIC */
val = read_size(event, data + field->offset,
field->size);
if (field->flags & FIELD_IS_SIGNED) {
XPUSHs(sv_2mortal(newSViv(val)));
} else {
XPUSHs(sv_2mortal(newSVuv(val)));
}
}
}
PUTBACK;
if (get_cv(handler, 0))
call_pv(handler, G_SCALAR);
else if (get_cv("main::trace_unhandled", 0)) {
XPUSHs(sv_2mortal(newSVpv(handler, 0)));
XPUSHs(sv_2mortal(newSViv(PTR2IV(scripting_context))));
XPUSHs(sv_2mortal(newSVuv(cpu)));
XPUSHs(sv_2mortal(newSVuv(nsecs)));
XPUSHs(sv_2mortal(newSViv(pid)));
XPUSHs(sv_2mortal(newSVpv(comm, 0)));
call_pv("main::trace_unhandled", G_SCALAR);
}
SPAGAIN;
PUTBACK;
FREETMPS;
LEAVE;
}
static void define_event_symbols(struct event_format *event,
const char *ev_name,
struct print_arg *args)
{
if (args == NULL)
return;
switch (args->type) {
case PRINT_NULL:
break;
case PRINT_ATOM:
define_flag_value(ev_name, cur_field_name, "0",
args->atom.atom);
zero_flag_atom = 0;
break;
case PRINT_FIELD:
free(cur_field_name);
cur_field_name = strdup(args->field.name);
break;
case PRINT_FLAGS:
define_event_symbols(event, ev_name, args->flags.field);
define_flag_field(ev_name, cur_field_name, args->flags.delim);
define_flag_values(args->flags.flags, ev_name, cur_field_name);
break;
case PRINT_SYMBOL:
define_event_symbols(event, ev_name, args->symbol.field);
define_symbolic_field(ev_name, cur_field_name);
define_symbolic_values(args->symbol.symbols, ev_name,
cur_field_name);
break;
case PRINT_HEX:
define_event_symbols(event, ev_name, args->hex.field);
define_event_symbols(event, ev_name, args->hex.size);
break;
case PRINT_INT_ARRAY:
define_event_symbols(event, ev_name, args->int_array.field);
define_event_symbols(event, ev_name, args->int_array.count);
define_event_symbols(event, ev_name, args->int_array.el_size);
break;
case PRINT_BSTRING:
case PRINT_DYNAMIC_ARRAY:
case PRINT_DYNAMIC_ARRAY_LEN:
case PRINT_STRING:
case PRINT_BITMASK:
break;
case PRINT_TYPE:
define_event_symbols(event, ev_name, args->typecast.item);
break;
case PRINT_OP:
if (strcmp(args->op.op, ":") == 0)
zero_flag_atom = 1;
define_event_symbols(event, ev_name, args->op.left);
define_event_symbols(event, ev_name, args->op.right);
break;
case PRINT_FUNC:
default:
pr_err("Unsupported print arg type\n");
/* we should warn... */
return;
}
if (args->next)
define_event_symbols(event, ev_name, args->next);
}
