linux-kernel - [for-linus][PATCH 0/4] tracing: Fixes for v6.6-rc3

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Date:   Sat, 30 Sep 2023 16:32:13 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [for-linus][PATCH 0/4] tracing: Fixes for v6.6-rc3

Tracing fixes for v6.6-rc3:

- Make sure 32 bit applications using user events have aligned access when
  running on a 64 bit kernel.

- Add cond_resched in the loop that handles converting enums in print_fmt
  string is trace events.

- Fix premature wake ups of polling processes in the tracing ring buffer. When
  a task polls waiting for a percentage of the ring buffer to be filled, the
  writer still will wake it up at every event. Add the polling's percentage to
  the "shortest_full" list to tell the writer when to wake it up.

- For eventfs dir lookups on dynamic events, an event system's only event could
  be removed, leaving its dentry with no children. This is totally legitimate.
  But on eventfs_release() it must not access the children array, as it is only
  allocated when the dentry has children.

  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace/urgent

Head SHA1: 2598bd3ca8dcf5bbca1161ee5b271b432398da37


Beau Belgrave (1):
      tracing/user_events: Align set_bit() address for all archs

Clément Léger (1):
      tracing: relax trace_event_eval_update() execution with cond_resched()

Steven Rostedt (Google) (2):
      ring-buffer: Update "shortest_full" in polling
      eventfs: Test for dentries array allocated in eventfs_release()

----
 fs/tracefs/event_inode.c         |  2 +-
 kernel/trace/ring_buffer.c       |  3 +++
 kernel/trace/trace_events.c      |  1 +
 kernel/trace/trace_events_user.c | 58 +++++++++++++++++++++++++++++++++++-----
 4 files changed, 56 insertions(+), 8 deletions(-)