[PATCH v3 0/2] tracing: preserve repeated boot-time parameters and drain deferred trigger frees

[Wesley Atwell <atwellwea@gmail.com>]

Patch 1 updates the affected early tracing boot-parameter parsers to
preserve repeated instances in the format their existing parsers already
consume, and documents that repeated-parameter behavior.

Patch 2 fixes deferred trigger-data cleanup so boot-deferred frees are
drained even when the cleanup kthread never starts.

v3:
- Patch 1: use a shared trace_append_boot_param() helper
- Patch 1: document repeated-parameter behavior in kernel-parameters.txt
- Patch 1: reframe as an improvement and drop the Fixes tags
- Patch 2: no changes

v2:
- Patch 1: no changes
- Patch 2: restore the dropped mutex recheck comment
- Patch 2: clarify the synchronous fallback drain path

Wesley Atwell (2):
  tracing: preserve repeated boot-time tracing parameters
  tracing: drain deferred trigger frees if kthread startup fails

 .../admin-guide/kernel-parameters.txt         | 18 ++++-
 kernel/trace/ftrace.c                         | 12 ++-
 kernel/trace/trace.c                          |  3 +-
 kernel/trace/trace.h                          | 29 +++++++
 kernel/trace/trace_events.c                   | 26 +++++-
 kernel/trace/trace_events_trigger.c           | 79 ++++++++++++++++---
 kernel/trace/trace_kprobe.c                   |  3 +-
 7 files changed, 145 insertions(+), 25 deletions(-)

-- 
2.34.1