drivers/block/null_blk/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  */
  12 const 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 }