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Commit 810dc732 authored by Wenji Huang's avatar Wenji Huang Committed by Steven Rostedt
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tracing: provide correct return value after outputting the event 



This patch is to make the function return early on failure, and give
correct return value on success.

Signed-off-by: default avatarWenji Huang <wenji.huang@oracle.com>
Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
parent f54fc98a

kernel/trace/trace_functions_graph.c

+7 −7
Original line number Diff line number Diff line
@@ -186,30 +186,30 @@ verif_pid(struct trace_seq *s, pid_t pid, int cpu, pid_t *last_pids_cpu) 
	ret = trace_seq_printf(s,

		" ------------------------------------------\n");

	if (!ret)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	ret = print_graph_cpu(s, cpu);

	if (ret == TRACE_TYPE_PARTIAL_LINE)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	ret = print_graph_proc(s, prev_pid);

	if (ret == TRACE_TYPE_PARTIAL_LINE)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	ret = trace_seq_printf(s, " => ");

	if (!ret)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	ret = print_graph_proc(s, pid);

	if (ret == TRACE_TYPE_PARTIAL_LINE)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	ret = trace_seq_printf(s,

		"\n ------------------------------------------\n\n");

	if (!ret)

		TRACE_TYPE_PARTIAL_LINE;

		return TRACE_TYPE_PARTIAL_LINE;



	return ret;

	return TRACE_TYPE_HANDLED;

}



static struct ftrace_graph_ret_entry *