null_blk_trace.c 464 B

123456789101112131415161718192021
  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 "null_blk_trace.h"
  8. /*
  9. * Helper to use for all null_blk traces to extract disk name.
  10. */
  11. const char *nullb_trace_disk_name(struct trace_seq *p, char *name)
  12. {
  13. const char *ret = trace_seq_buffer_ptr(p);
  14. if (name && *name)
  15. trace_seq_printf(p, "disk=%s, ", name);
  16. trace_seq_putc(p, 0);
  17. return ret;
  18. }