trace.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * null_blk trace related helpers.
 4 *
 5 * Copyright (C) 2020 Western Digital Corporation or its affiliates.
 6 */
 7#include "trace.h"
 8
 9/*
10 * Helper to use for all null_blk traces to extract disk name.
11 */
12const char *nullb_trace_disk_name(struct trace_seq *p, char *name)
13{
14	const char *ret = trace_seq_buffer_ptr(p);
15
16	if (name && *name)
17		trace_seq_printf(p, "disk=%s, ", name);
18	trace_seq_putc(p, 0);
19
20	return ret;
21}