linux-kernel - [for-next][PATCH 0/9] tracing: ring-buffer selftest, cleanups, ftrace

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Date:	Fri, 15 Mar 2013 23:24:12 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>
Subject: [for-next][PATCH 0/9] tracing: ring-buffer selftest, cleanups, ftrace_dump() fix and document

One more linux-next patch series.

The first patch is a ring buffer boot time selftest. A bug in my development
code looked like the ring buffer was dropping events, and I wrote a test
to make sure that wasn't the case. The bug ended up being a stupid
mistake in my development code, but the ring buffer test seemed like a
good idea to include in the kernel as an option.

Next is a series of clean ups by Jovi.

Jovi also pointed out issues with ftrace_dump(). It's been on my todo
list to clean up ftrace_dump() for a long time, and finally decided
to do so. It wasn't hard and was quick to do. There was a long standing
bug where an NMI triggering a dump while another dump was happening
could cause a deadlock. I marked that patch for stable, but since its
really just a debugging tool and I don't recall ever hitting the deadlock
(I might have), I decided it can wait for 3.10 and I'll do the backports
when I get the "Failed to apply" messages from Greg Kroah-Hartman's
stable scripts.

Last patch brings the README file in debugfs/tracing/ up to date with
more useful information.

Enjoy!

-- Steve

Steven Rostedt (Red Hat) (3):
      ring-buffer: Add ring buffer startup selftest
      tracing: Fix ftrace_dump()
      tracing: Update debugfs README file

zhangwei(Jovi) (6):
      tracing: Use pr_warn_once instead of open coded implementation
      tracing: Use TRACE_MAX_PRINT instead of constant
      tracing: Move find_event_field() into trace_events.c
      tracing: Convert trace_destroy_fields() to static
      tracing: Fix comment about prefix in arch_syscall_match_sym_name()
      tracing: Rename trace_event_mutex to trace_event_sem

----
 kernel/trace/Kconfig               |   23 +++
 kernel/trace/ring_buffer.c         |  319 ++++++++++++++++++++++++++++++++++++
 kernel/trace/trace.c               |  164 +++++++++++-------
 kernel/trace/trace.h               |    6 +-
 kernel/trace/trace_events.c        |   55 +++++--
 kernel/trace/trace_events_filter.c |   29 +---
 kernel/trace/trace_output.c        |   16 +-
 kernel/trace/trace_output.h        |    2 +-
 kernel/trace/trace_selftest.c      |    9 +-
 kernel/trace/trace_syscalls.c      |    2 +-
 10 files changed, 506 insertions(+), 119 deletions(-)

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