[v3,0/3] tracing: add trace_seq_reset function

Message

Ricardo B. Marliere Jan. 25, 2024, 10:28 p.m. UTC

This series is a prerequisite for a later effort of making trace_seq more
flexible about its buffer size. To achieve that, initializing and resetting
the buffers need to be differentiated.

Changes in v3:
- Reordered commits so it doesn't produce a failing build in-between.
- Improved changelogs.

Changes in v2:
- Added a WARN_ON_ONCE to __trace_seq_init to catch possible misuses.
- Properly initialized trace_seq buffers.

Ricardo B. Marliere (3):
  tracing: initialize trace_seq buffers
  tracing: add trace_seq_reset function
  tracing: convert __trace_seq_init to use WARN_ON_ONCE

 include/linux/trace_seq.h    | 11 +++++++++++
 include/trace/trace_events.h |  2 +-
 kernel/trace/trace.c         | 24 +++++++++++++++++++-----
 kernel/trace/trace_output.c  |  2 +-
 kernel/trace/trace_seq.c     |  4 ++--
 5 files changed, 34 insertions(+), 9 deletions(-)