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Commit 5fecaa04 authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt
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ftrace: Grab any ops for a rec for enabled_functions output



When dumping the enabled_functions, use the first op that is
found with a trampoline to the record, as there should only be
one, as only one ops can be registered to a function that has
a trampoline.

Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 3296fc4e
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+20 −1
Original line number Original line Diff line number Diff line
@@ -1900,6 +1900,25 @@ int ftrace_test_record(struct dyn_ftrace *rec, int enable)
	return ftrace_check_record(rec, enable, 0);
	return ftrace_check_record(rec, enable, 0);
}
}


static struct ftrace_ops *
ftrace_find_tramp_ops_any(struct dyn_ftrace *rec)
{
	struct ftrace_ops *op;

	do_for_each_ftrace_op(op, ftrace_ops_list) {

		if (!op->trampoline)
			continue;

		if (ftrace_lookup_ip(op->func_hash->filter_hash, rec->ip) &&
		    (ftrace_hash_empty(op->func_hash->notrace_hash) ||
		     !ftrace_lookup_ip(op->func_hash->notrace_hash, rec->ip)))
			return op;
	} while_for_each_ftrace_op(op);

	return NULL;
}

static struct ftrace_ops *
static struct ftrace_ops *
ftrace_find_tramp_ops_curr(struct dyn_ftrace *rec)
ftrace_find_tramp_ops_curr(struct dyn_ftrace *rec)
{
{
@@ -2966,7 +2985,7 @@ static int t_show(struct seq_file *m, void *v)
		if (rec->flags & FTRACE_FL_TRAMP_EN) {
		if (rec->flags & FTRACE_FL_TRAMP_EN) {
			struct ftrace_ops *ops;
			struct ftrace_ops *ops;


			ops = ftrace_find_tramp_ops_curr(rec);
			ops = ftrace_find_tramp_ops_any(rec);
			if (ops && ops->trampoline)
			if (ops && ops->trampoline)
				seq_printf(m, "\ttramp: %pS",
				seq_printf(m, "\ttramp: %pS",
					   (void *)ops->trampoline);
					   (void *)ops->trampoline);