From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>,
linux-kernel@vger.kernel.org, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
josht@linux.vnet.ibm.com, dvhltc@us.ibm.com, niv@us.ibm.com,
tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
Paul Mundt <lethal@linux-sh.org>
Subject: Re: [PATCH -tip 0/2] Temporary RCU fixes for notrace and hotplug CPU
Date: Tue, 25 Aug 2009 09:12:08 -0700 [thread overview]
Message-ID: <20090825161208.GE6616@linux.vnet.ibm.com> (raw)
In-Reply-To: <20090825080047.GA16139@elte.hu>
On Tue, Aug 25, 2009 at 10:00:47AM +0200, Ingo Molnar wrote:
>
> btw., i'm still seeing crashes with the latest RCU bits:
>
> [ 20.621740] Testing event sys_enter_futex: OK
> [ 20.629738] Testing event sys_exit_futex: OK
> [ 20.637737] Testing event lock_acquire: [reboot]
>
> Possibly due to infinite recursion as well. Config attached.
Color me confused...
Unless someone has a better idea, I will send in a patch that adds
"notrace" to every RCU API member used by any file in the kernel
that has "trace" in its name (excluding ptrace.c and rcutree_trace.c,
of course). This list is as follows:
call_rcu()
call_rcu_sched()
rcu_read_lock()
rcu_read_unlock()
So, any better ideas?
Thanx, Paul
next prev parent reply other threads:[~2009-08-25 16:12 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-24 16:41 [PATCH -tip 0/2] Temporary RCU fixes for notrace and hotplug CPU Paul E. McKenney
2009-08-24 16:42 ` [PATCH -tip 1/2] Add "notrace" to RCU function headers used by ftrace Paul E. McKenney
2009-08-24 23:38 ` Steven Rostedt
2009-08-25 0:10 ` Mathieu Desnoyers
2009-08-25 2:02 ` Paul E. McKenney
2009-08-25 2:11 ` Steven Rostedt
2009-08-25 2:25 ` Paul E. McKenney
2009-08-25 7:13 ` [tip:core/rcu] rcu: " tip-bot for Paul E. McKenney
2009-08-24 16:42 ` [PATCH -tip 2/2] Add CPU-offline processing for single-node configurations Paul E. McKenney
2009-08-25 7:13 ` [tip:core/rcu] rcu: " tip-bot for Paul E. McKenney
2009-08-25 6:55 ` [PATCH -tip 0/2] Temporary RCU fixes for notrace and hotplug CPU Ingo Molnar
2009-08-25 8:00 ` Ingo Molnar
2009-08-25 16:12 ` Paul E. McKenney [this message]
2009-08-25 16:25 ` Mathieu Desnoyers
2009-08-25 17:11 ` Paul E. McKenney
2009-08-25 18:02 ` Mathieu Desnoyers
2009-08-25 18:36 ` [PATCH -tip] " Paul E. McKenney
2009-08-26 0:53 ` Lai Jiangshan
2009-08-26 1:31 ` Paul E. McKenney
2009-08-25 15:40 ` Paul E. McKenney
2009-08-25 18:19 ` Ingo Molnar
2009-08-25 18:41 ` Paul E. McKenney
2009-08-25 18:21 ` [tip:core/rcu] rcu: Add #ifdef to suppress __rcu_offline_cpu() warning in !HOTPLUG_CPU builds tip-bot for Paul E. McKenney
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