18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0
28c2ecf20Sopenharmony_ci/*
38c2ecf20Sopenharmony_ci * null_blk trace related helpers.
48c2ecf20Sopenharmony_ci *
58c2ecf20Sopenharmony_ci * Copyright (C) 2020 Western Digital Corporation or its affiliates.
68c2ecf20Sopenharmony_ci */
78c2ecf20Sopenharmony_ci#include "trace.h"
88c2ecf20Sopenharmony_ci
98c2ecf20Sopenharmony_ci/*
108c2ecf20Sopenharmony_ci * Helper to use for all null_blk traces to extract disk name.
118c2ecf20Sopenharmony_ci */
128c2ecf20Sopenharmony_ciconst char *nullb_trace_disk_name(struct trace_seq *p, char *name)
138c2ecf20Sopenharmony_ci{
148c2ecf20Sopenharmony_ci	const char *ret = trace_seq_buffer_ptr(p);
158c2ecf20Sopenharmony_ci
168c2ecf20Sopenharmony_ci	if (name && *name)
178c2ecf20Sopenharmony_ci		trace_seq_printf(p, "disk=%s, ", name);
188c2ecf20Sopenharmony_ci	trace_seq_putc(p, 0);
198c2ecf20Sopenharmony_ci
208c2ecf20Sopenharmony_ci	return ret;
218c2ecf20Sopenharmony_ci}
22