From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Waiman Long <waiman.long@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Davidlohr Bueso <davidlohr.bueso@hp.com>,
Steven Rostedt <rostedt@goodmis.org>,
Paul McKenney <paulmck@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>, ????????? <laijs@cn.fujitsu.com>,
Dipankar Sarma <dipankar@in.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Josh Triplett <josh@joshtriplett.org>,
niv@us.ibm.com, Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
David Howells <dhowells@redhat.com>,
Eric Dumazet <edumazet@google.com>,
Darren Hart <darren@dvhart.com>,
Fr??d??ric Weisbecker <fweisbec@gmail.com>,
Silas Boyd-Wickizer <sbw@mit.edu>
Subject: Re: [PATCH RFC ticketlock] Auto-queued ticketlock
Date: Sat, 15 Jun 2013 11:26:20 +1000 [thread overview]
Message-ID: <1371259580.21896.18.camel@pasglop> (raw)
In-Reply-To: <51BB5E27.5010009@hp.com>
On Fri, 2013-06-14 at 14:17 -0400, Waiman Long wrote:
>
> With some minor changes, the current patch can be modified to support
> debugging lock for 32-bit system. For 64-bit system, we can apply a
> similar concept for debugging lock with cmpxchg_double. However, for
> architecture that does not have cmpxchg_double support, it will be out
> of luck and we probably couldn't support the same feature in debugging
> mode. It will have to fall back to taking the lock.
That means only x86_64 and s390 would benefit from it ... I'm sure we can do better :-)
Cheers,
Ben.
next prev parent reply other threads:[~2013-06-15 1:28 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-09 19:36 [PATCH RFC ticketlock] Auto-queued ticketlock Paul E. McKenney
2013-06-10 20:47 ` Steven Rostedt
2013-06-10 20:57 ` Paul E. McKenney
2013-06-10 21:01 ` Thomas Gleixner
2013-06-10 21:15 ` Paul E. McKenney
2013-06-10 21:08 ` Steven Rostedt
2013-06-10 21:30 ` Paul E. McKenney
2013-06-10 21:35 ` Eric Dumazet
2013-06-10 21:54 ` Paul E. McKenney
2013-06-10 23:02 ` Steven Rostedt
2013-06-11 0:22 ` Paul E. McKenney
2013-06-11 0:44 ` Steven Rostedt
2013-06-11 0:51 ` Linus Torvalds
2013-06-11 7:53 ` Lai Jiangshan
2013-06-11 10:14 ` Paul E. McKenney
2013-06-11 15:22 ` Steven Rostedt
2013-06-11 16:45 ` Paul E. McKenney
2013-06-11 10:06 ` Paul E. McKenney
2013-06-11 17:53 ` Davidlohr Bueso
2013-06-11 18:05 ` Paul E. McKenney
2013-06-11 18:10 ` Steven Rostedt
2013-06-11 18:14 ` Davidlohr Bueso
2013-06-11 18:46 ` Paul E. McKenney
2013-06-12 17:50 ` Davidlohr Bueso
2013-06-12 18:15 ` Linus Torvalds
2013-06-12 20:03 ` Davidlohr Bueso
2013-06-12 20:26 ` Linus Torvalds
2013-06-12 20:40 ` Davidlohr Bueso
2013-06-12 21:06 ` Raymond Jennings
2013-06-12 23:32 ` Al Viro
2013-06-13 0:01 ` Linus Torvalds
2013-06-13 0:20 ` Al Viro
2013-06-13 0:38 ` Linus Torvalds
2013-06-13 0:49 ` Al Viro
2013-06-13 0:59 ` Linus Torvalds
2013-06-14 15:00 ` Waiman Long
2013-06-14 15:37 ` Linus Torvalds
2013-06-14 18:17 ` Waiman Long
2013-06-15 1:26 ` Benjamin Herrenschmidt [this message]
2013-06-15 3:36 ` Waiman Long
2013-06-12 20:37 ` Linus Torvalds
2013-06-12 18:18 ` Steven Rostedt
2013-06-11 9:56 ` Paul E. McKenney
2013-06-11 15:00 ` Paul E. McKenney
2013-06-11 1:04 ` Steven Rostedt
2013-06-11 9:52 ` Paul E. McKenney
2013-06-11 14:48 ` Lai Jiangshan
2013-06-11 15:10 ` Lai Jiangshan
2013-06-11 16:48 ` Paul E. McKenney
2013-06-11 17:17 ` Linus Torvalds
2013-06-11 17:30 ` Paul E. McKenney
2013-06-11 16:21 ` Paul E. McKenney
2013-06-11 15:57 ` Waiman Long
2013-06-11 16:20 ` Steven Rostedt
2013-06-11 16:43 ` Paul E. McKenney
2013-06-11 17:13 ` Steven Rostedt
2013-06-11 17:43 ` Paul E. McKenney
2013-06-11 17:35 ` Waiman Long
2013-06-11 16:36 ` Paul E. McKenney
2013-06-11 17:01 ` Steven Rostedt
2013-06-11 17:16 ` Paul E. McKenney
2013-06-11 18:41 ` Waiman Long
2013-06-11 18:54 ` Davidlohr Bueso
2013-06-11 19:49 ` Paul E. McKenney
2013-06-11 20:09 ` Steven Rostedt
2013-06-11 20:32 ` Paul E. McKenney
2013-06-11 20:53 ` Steven Rostedt
2013-06-11 20:25 ` Jason Low
2013-06-11 20:36 ` Paul E. McKenney
2013-06-11 20:56 ` Steven Rostedt
2013-06-11 21:09 ` Paul E. McKenney
2013-06-12 1:19 ` Lai Jiangshan
2013-06-12 1:58 ` Steven Rostedt
2013-06-12 10:12 ` Paul E. McKenney
2013-06-12 11:06 ` Lai Jiangshan
2013-06-12 14:21 ` Paul E. McKenney
2013-06-12 14:15 ` Lai Jiangshan
2013-06-12 14:44 ` Paul E. McKenney
2013-06-11 17:02 ` [PATCH RFC ticketlock] v2 " Paul E. McKenney
2013-06-11 17:35 ` Linus Torvalds
2013-06-11 17:49 ` Paul E. McKenney
2013-06-11 17:36 ` Steven Rostedt
2013-06-11 17:52 ` Paul E. McKenney
2013-06-12 15:40 ` [PATCH RFC ticketlock] v3 " Paul E. McKenney
2013-06-12 16:13 ` Lai Jiangshan
2013-06-12 16:59 ` Paul E. McKenney
2013-06-13 2:55 ` Lai Jiangshan
2013-06-13 15:22 ` Paul E. McKenney
2013-06-13 23:25 ` Lai Jiangshan
2013-06-13 23:57 ` Paul E. McKenney
2013-06-14 1:28 ` Lai Jiangshan
2013-06-14 23:49 ` Paul E. McKenney
2013-06-14 7:12 ` Lai Jiangshan
2013-06-14 23:46 ` Paul E. McKenney
[not found] ` <CAC4Lta3dpTDc19rXLVQkZrxbu8AJL+Foc6ocAktUAozCpk2-Mg@mail.gmail.com>
2013-07-01 9:19 ` Raghavendra KT
2013-07-02 5:56 ` Paul E. McKenney
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