From: Ingo Molnar <mingo@elte.hu>
To: "Frédéric Weisbecker" <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mathieu Desnoyers <compudj@krystal.dyndns.org>,
Pekka Paalanen <pq@iki.fi>, Martin Bligh <mbligh@google.com>
Subject: Re: [PATCH 0/2] ring_buffer: updates for linux-tip
Date: Wed, 1 Oct 2008 09:23:00 +0200 [thread overview]
Message-ID: <20081001072300.GD9366@elte.hu> (raw)
In-Reply-To: <c62985530810010020u1f3f44e1l6b8fb2f31c35d215@mail.gmail.com>
* Frédéric Weisbecker <fweisbec@gmail.com> wrote:
> 2008/10/1 Steven Rostedt <rostedt@goodmis.org>:
> > The first patch is just a lockdep clean up of the ring buffer.
> >
> > The next patch is a new locking design. It is not lockless (yet) but
> > the locking is a bit cleaner than the original. The basic idea is
> > that the reader now has its own page to read from that is not in
> > the ring buffer. When the reader (a consumer) finishes a page, it
> > then grabs a lock to pull out a new page from the ring buffer and
> > replace it with the one that it just finished reading.
>
> Good idea! Sounds a real saner approach.
are the tracer problems you've reported yesterday fixed in latest
tip/master?
Ingo
next prev parent reply other threads:[~2008-10-01 7:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 4:29 [PATCH 0/2] ring_buffer: updates for linux-tip Steven Rostedt
2008-10-01 4:29 ` [PATCH 1/2] ring_buffer: remove raw from local_irq_save Steven Rostedt
2008-10-01 5:52 ` Ingo Molnar
2008-10-01 6:08 ` Ingo Molnar
2008-10-01 6:14 ` Ingo Molnar
2008-10-01 4:29 ` [PATCH 2/2] ring_buffer: implement new locking Steven Rostedt
2008-10-01 6:01 ` Ingo Molnar
2008-10-01 7:20 ` [PATCH 0/2] ring_buffer: updates for linux-tip Frédéric Weisbecker
2008-10-01 7:23 ` Ingo Molnar [this message]
2008-10-01 12:32 ` Frédéric Weisbecker
2008-10-01 17:08 ` Frédéric Weisbecker
2008-10-01 17:14 ` [PATCH] ftrace: preempt disable over interrupt disable Steven Rostedt
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