From: Tony Lindgren <tony@atomide.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org,
Russell King <linux@arm.linux.org.uk>,
Steven Rostedt <rostedt@goodmis.org>,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH arm 1/1] arm: Use _rcuidle tracepoint to allow use from idle
Date: Tue, 26 Apr 2016 11:29:39 -0700 [thread overview]
Message-ID: <20160426182939.GO5995@atomide.com> (raw)
In-Reply-To: <20160426175214.GJ3715@linux.vnet.ibm.com>
* Paul E. McKenney <paulmck@linux.vnet.ibm.com> [160426 10:53]:
> Does the following patch help?
It just changes the output.. See below.
> It is quite possible that there are quite a few more of these. If this
> is the case, then one way to make the kernel list more of them on a
> given boot is to build with CONFIG_PROVE_RCU_REPEATEDLY=y.
OK
Regards,
Tony
8< ------------------
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
RCU used illegally from extended quiescent state!
no locks held by swapper/1/0.
stack backtrace:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.6.0-rc5-next-20160426+ #1113
Hardware name: Generic OMAP4 (Flattened Device Tree)
[<c0110290>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
[<c010c3a8>] (show_stack) from [<c047ff88>] (dump_stack+0xb0/0xe4)
[<c047ff88>] (dump_stack) from [<c012c014>] (pwrdm_set_next_pwrst+0x100/0x1d4)
[<c012c014>] (pwrdm_set_next_pwrst) from [<c0126120>] (omap4_enter_lowpower+0xc8/0x230)
[<c0126120>] (omap4_enter_lowpower) from [<c0126c24>] (omap_enter_idle_coupled+0x6c/0x254)
[<c0126c24>] (omap_enter_idle_coupled) from [<c0601dfc>] (cpuidle_enter_state+0x80/0x3d4)
[<c0601dfc>] (cpuidle_enter_state) from [<c0603d30>] (cpuidle_enter_state_coupled+0x348/0x390)
[<c0603d30>] (cpuidle_enter_state_coupled) from [<c0183d34>] (cpu_startup_entry+0x198/0x3a0)
[<c0183d34>] (cpu_startup_entry) from [<8010162c>] (0x8010162c)
hw-breakpoint: Failed to enable monitor mode on CPU 0.
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH arm 1/1] arm: Use _rcuidle tracepoint to allow use from idle
Date: Tue, 26 Apr 2016 11:29:39 -0700 [thread overview]
Message-ID: <20160426182939.GO5995@atomide.com> (raw)
In-Reply-To: <20160426175214.GJ3715@linux.vnet.ibm.com>
* Paul E. McKenney <paulmck@linux.vnet.ibm.com> [160426 10:53]:
> Does the following patch help?
It just changes the output.. See below.
> It is quite possible that there are quite a few more of these. If this
> is the case, then one way to make the kernel list more of them on a
> given boot is to build with CONFIG_PROVE_RCU_REPEATEDLY=y.
OK
Regards,
Tony
8< ------------------
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
RCU used illegally from extended quiescent state!
no locks held by swapper/1/0.
stack backtrace:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.6.0-rc5-next-20160426+ #1113
Hardware name: Generic OMAP4 (Flattened Device Tree)
[<c0110290>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
[<c010c3a8>] (show_stack) from [<c047ff88>] (dump_stack+0xb0/0xe4)
[<c047ff88>] (dump_stack) from [<c012c014>] (pwrdm_set_next_pwrst+0x100/0x1d4)
[<c012c014>] (pwrdm_set_next_pwrst) from [<c0126120>] (omap4_enter_lowpower+0xc8/0x230)
[<c0126120>] (omap4_enter_lowpower) from [<c0126c24>] (omap_enter_idle_coupled+0x6c/0x254)
[<c0126c24>] (omap_enter_idle_coupled) from [<c0601dfc>] (cpuidle_enter_state+0x80/0x3d4)
[<c0601dfc>] (cpuidle_enter_state) from [<c0603d30>] (cpuidle_enter_state_coupled+0x348/0x390)
[<c0603d30>] (cpuidle_enter_state_coupled) from [<c0183d34>] (cpu_startup_entry+0x198/0x3a0)
[<c0183d34>] (cpu_startup_entry) from [<8010162c>] (0x8010162c)
hw-breakpoint: Failed to enable monitor mode on CPU 0.
next prev parent reply other threads:[~2016-04-26 18:29 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-25 20:48 [PATCH arm 1/1] arm: Use _rcuidle tracepoint to allow use from idle Paul E. McKenney
2016-04-25 20:48 ` Paul E. McKenney
2016-04-25 20:48 ` Paul E. McKenney
2016-04-26 15:00 ` Tony Lindgren
2016-04-26 15:00 ` Tony Lindgren
2016-04-26 17:52 ` Paul E. McKenney
2016-04-26 17:52 ` Paul E. McKenney
2016-04-26 18:29 ` Tony Lindgren [this message]
2016-04-26 18:29 ` Tony Lindgren
2016-04-26 19:07 ` Paul E. McKenney
2016-04-26 19:07 ` Paul E. McKenney
2016-04-26 19:39 ` Tony Lindgren
2016-04-26 19:39 ` Tony Lindgren
2016-04-26 19:44 ` Steven Rostedt
2016-04-26 19:44 ` Steven Rostedt
2016-04-26 19:51 ` Paul E. McKenney
2016-04-26 19:51 ` Paul E. McKenney
2016-04-26 19:52 ` Steven Rostedt
2016-04-26 19:52 ` Steven Rostedt
2016-04-26 20:06 ` Paul E. McKenney
2016-04-26 20:06 ` Paul E. McKenney
2016-04-26 19:51 ` Tony Lindgren
2016-04-26 19:51 ` Tony Lindgren
2016-04-26 20:06 ` Paul E. McKenney
2016-04-26 20:06 ` Paul E. McKenney
2016-04-26 20:11 ` Paul E. McKenney
2016-04-26 20:11 ` Paul E. McKenney
2016-04-26 20:25 ` Tony Lindgren
2016-04-26 20:25 ` Tony Lindgren
2016-04-26 20:25 ` Tony Lindgren
2016-04-26 20:41 ` Paul E. McKenney
2016-04-26 20:41 ` Paul E. McKenney
2016-04-26 20:46 ` Tony Lindgren
2016-04-26 20:46 ` Tony Lindgren
2016-04-26 20:52 ` Steven Rostedt
2016-04-26 20:52 ` Steven Rostedt
2016-04-26 21:08 ` Paul E. McKenney
2016-04-26 21:08 ` Paul E. McKenney
2016-04-26 21:04 ` Paul E. McKenney
2016-04-26 21:04 ` Paul E. McKenney
2016-04-26 21:04 ` Paul E. McKenney
2016-04-26 21:12 ` Tony Lindgren
2016-04-26 21:12 ` Tony Lindgren
2016-04-26 21:26 ` Paul E. McKenney
2016-04-26 21:26 ` Paul E. McKenney
2016-04-26 21:36 ` Tony Lindgren
2016-04-26 21:36 ` Tony Lindgren
2016-04-26 20:16 ` Steven Rostedt
2016-04-26 20:16 ` Steven Rostedt
2016-04-26 20:36 ` Paul E. McKenney
2016-04-26 20:36 ` Paul E. McKenney
2016-04-26 19:47 ` Paul E. McKenney
2016-04-26 19:47 ` Paul E. McKenney
2016-04-26 19:17 ` Steven Rostedt
2016-04-26 19:17 ` Steven Rostedt
2016-04-26 19:41 ` Tony Lindgren
2016-04-26 19:41 ` Tony Lindgren
2016-04-26 19:42 ` Paul E. McKenney
2016-04-26 19:42 ` Paul E. McKenney
2016-04-26 19:49 ` Steven Rostedt
2016-04-26 19:49 ` Steven Rostedt
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