162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci * null_blk trace related helpers.
462306a36Sopenharmony_ci *
562306a36Sopenharmony_ci * Copyright (C) 2020 Western Digital Corporation or its affiliates.
662306a36Sopenharmony_ci */
762306a36Sopenharmony_ci#include "trace.h"
862306a36Sopenharmony_ci
962306a36Sopenharmony_ci/*
1062306a36Sopenharmony_ci * Helper to use for all null_blk traces to extract disk name.
1162306a36Sopenharmony_ci */
1262306a36Sopenharmony_ciconst char *nullb_trace_disk_name(struct trace_seq *p, char *name)
1362306a36Sopenharmony_ci{
1462306a36Sopenharmony_ci	const char *ret = trace_seq_buffer_ptr(p);
1562306a36Sopenharmony_ci
1662306a36Sopenharmony_ci	if (name && *name)
1762306a36Sopenharmony_ci		trace_seq_printf(p, "disk=%s, ", name);
1862306a36Sopenharmony_ci	trace_seq_putc(p, 0);
1962306a36Sopenharmony_ci
2062306a36Sopenharmony_ci	return ret;
2162306a36Sopenharmony_ci}
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