linux-kernel - [PATCH 0/2] [GIT PULL] tracing: A couple more regression fixes

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Date:	Mon, 14 Jan 2013 22:20:42 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 0/2] [GIT PULL] tracing: A couple more regression fixes

Linus,

The clean up patch commit 0fb9656d "tracing: Make tracing_enabled be equal
to tracing_on" caused two regressions.

1) The irqs off latency tracer no longer starts if tracing_on is off
  when the tracer is set, and then tracing_on is enabled. The tracing_on
  file needs the hook that tracing_enabled had to enable tracers if they
  request it (call the tracer's start() method).

2) That commit had a separate change that really should have been a
  separate patch, but it must have been added accidently with the -a
  option of git commit. But as the change is still related to the commit
  it wasn't noticed in review. That change, changed the way blocking is
  done by the trace_pipe file with respect to the tracing_on settings.
  I've been told that this change breaks current userspace, and this
  specific change is being reverted.

Please pull trace-3.8-rc3-regression-fix, which can be found at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-3.8-rc3-regression-fix

Head SHA1: 84c630600dc007d2fbd307088b87c9be85b40a97

Liu Bo (1):
      tracing: Fix regression of trace_pipe

Steven Rostedt (1):
      tracing: Fix regression with irqsoff tracer and tracing_on file

----
 kernel/trace/trace.c |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

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