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From: Steven Rostedt <rostedt@goodmis.org>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: linux-kernel@vger.kernel.org, kernel-team@android.com,
	Boqun Feng <boqun.feng@gmail.com>,
	Byungchul Park <byungchul.park@lge.com>,
	Ingo Molnar <mingo@redhat.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Paul McKenney <paulmck@linux.vnet.ibm.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Glexiner <tglx@linutronix.de>,
	Tom Zanussi <tom.zanussi@linux.intel.com>
Subject: Re: [PATCH v12 2/3] tracepoint: Make rcuidle tracepoint callers use SRCU
Date: Fri, 10 Aug 2018 12:32:46 -0400	[thread overview]
Message-ID: <20180810123246.1174ba66@gandalf.local.home> (raw)
In-Reply-To: <20180810113554.1df28050@gandalf.local.home>

On Fri, 10 Aug 2018 11:35:54 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:

> Investigating it, it's that when we register more than one event, the
> tracepoint code calls "release_probes" when adding new tracepoints (as
> it updated the tracepoint array), and this is done very early in boot
> up, causing this warning.
> 
> I'm still looking at ways to fix this. Any ideas would help.

I just posted a patch:

 http://lkml.kernel.org/r/20180810123042.51ceddb9@gandalf.local.home

It appears to fix the issue. I'm going to start testing it in my suite.
Does anyone have any concerns about it, or a better solution?

Thanks!

-- Steve

  reply	other threads:[~2018-08-10 16:32 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-30 22:24 [PATCH v12 0/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 1/3] lockdep: use this_cpu_ptr instead of get_cpu_var stats Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 2/3] tracepoint: Make rcuidle tracepoint callers use SRCU Joel Fernandes
2018-07-30 23:10   ` Steven Rostedt
2018-08-10 15:35   ` Steven Rostedt
2018-08-10 16:32     ` Steven Rostedt [this message]
2018-07-30 22:24 ` [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-08-06 19:50   ` Steven Rostedt
2018-08-07  0:43     ` Joel Fernandes
2018-08-07  1:43       ` Steven Rostedt
2018-08-07 13:33         ` Joel Fernandes
2018-08-07 13:49           ` Steven Rostedt
2018-08-07 14:10             ` Joel Fernandes
2018-08-07 14:34               ` Steven Rostedt
2018-08-07 14:48                 ` Joel Fernandes
2018-08-07 15:09                   ` Steven Rostedt
2018-08-07 15:24                     ` Joel Fernandes
2018-08-07 23:45                       ` Steven Rostedt
2018-08-07 23:54                         ` Joel Fernandes
2018-08-08  0:48                           ` Steven Rostedt
2018-08-08  1:17                             ` Joel Fernandes
2018-08-08  1:55                               ` Steven Rostedt
2018-08-08  2:13                                 ` Joel Fernandes
2018-08-08  2:28                                   ` Steven Rostedt
2018-08-08  3:44                                     ` Joel Fernandes
2018-08-08  3:53                                       ` Joel Fernandes
2018-08-08  5:06                                         ` Joel Fernandes
2018-08-08 12:46                                         ` Steven Rostedt
2018-08-08 13:03                                           ` Paul E. McKenney
2018-08-08 13:07                                             ` Steven Rostedt
2018-08-08 14:33                                               ` Paul E. McKenney
2018-08-08 14:49                                                 ` Steven Rostedt
2018-08-08 15:05                                                   ` Paul E. McKenney
2018-08-08 15:23                                                     ` Steven Rostedt
2018-08-08 16:02                                                       ` Paul E. McKenney
2018-08-08 16:24                                                         ` Steven Rostedt
2018-08-08 17:21                                                           ` Paul E. McKenney
2018-08-08 13:00                                         ` Paul E. McKenney
2018-08-08 14:10                                           ` Joel Fernandes
2018-08-08 14:49                                             ` Paul E. McKenney
2018-08-08 19:24                                               ` Joel Fernandes
2018-08-08 20:18                                                 ` Paul E. McKenney
2018-08-08 22:15                                                   ` Joel Fernandes
2018-08-08 22:47                                                     ` Paul E. McKenney
2018-08-09 12:18                                                       ` joel
2018-08-08 14:27                                           ` Steven Rostedt
2018-08-08 14:42                                             ` Paul E. McKenney
2018-08-08 15:27                                               ` Steven Rostedt
2018-08-08 16:03                                                 ` Paul E. McKenney
2018-08-02 14:55 ` [PATCH v12 0/3] " Masami Hiramatsu
2018-08-03  2:57   ` Joel Fernandes
2018-08-03  7:23     ` Masami Hiramatsu
2018-08-04  4:51       ` Joel Fernandes
2018-08-05 16:46         ` Joel Fernandes
2018-08-06  2:07           ` Masami Hiramatsu
2018-08-06 15:24             ` Joel Fernandes
2018-08-03  7:34     ` Masami Hiramatsu

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