From: Ulf Hansson <ulf.hansson@linaro.org>
To: Raju P L S S S N <rplsssn@codeaurora.org>
Cc: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Sudeep Holla <sudeep.holla@arm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Linux PM <linux-pm@vger.kernel.org>,
Kevin Hilman <khilman@kernel.org>,
Lina Iyer <ilina@codeaurora.org>,
Lina Iyer <lina.iyer@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Vincent Guittot <vincent.guittot@linaro.org>,
Stephen Boyd <sboyd@kernel.org>, Juri Lelli <juri.lelli@arm.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v8 24/26] drivers: firmware: psci: Deal with CPU hotplug when using OSI mode
Date: Tue, 20 Nov 2018 10:50:22 +0100 [thread overview]
Message-ID: <CAPDyKFond=Q-cWsjKwGToprjPTFj=WA_-nsAoUFJdNCdkki8Rw@mail.gmail.com> (raw)
In-Reply-To: <9bf3713b-df00-03b3-d235-7549565382c7@codeaurora.org>
On 19 November 2018 at 20:50, Raju P L S S S N <rplsssn@codeaurora.org> wrote:
> Hi Ulf,
>
> Got one issue in hotplug path where of_genpd_detach_cpu calls
> dev_pm_qos_remove_notifier which can be sleeping as per below call stack. I
> think it should be applicable for current patch as well right? Please let me
> know what am I missing? why didn't you see this issue with this patch?
Weird.
>
>
> [ 8103.221387] BUG: sleeping function called from invalid context at
> /mnt/host/source/src/third_party/kernel/v4.14/kernel/locking/mutex.c:238
Could it be due to some other patch in your v.4.14 kernel?
> [ 8103.221455] in_atomic(): 1, irqs_disabled(): 128, pid: 11, name:
> migration/0
> [ 8103.221487] Preemption disabled at:
> [ 8103.221529] [<ffffff800814dfb0>] cpu_stopper_thread+0x98/0x118
> [ 8103.221600] ------------[ cut here ]------------
> [ 8103.221636] kernel BUG at
> /mnt/host/source/src/third_party/kernel/v4.14/kernel/sched/core.c:6102!
> [ 8103.221678] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
> [ 8103.222396] CPU: 0 PID: 11 Comm: migration/0 Tainted: G W 4.14.72
> #1
> [ 8103.222428] Hardware name: Google Cheza (rev1) (DT)
> [ 8103.222460] task: ffffffc0f842d580 task.stack: ffffff8009c18000
> [ 8103.222504] PC is at ___might_sleep+0x138/0x140
> [ 8103.222542] LR is at ___might_sleep+0x138/0x140
> [ 8103.222577] pc : [<ffffff80080d8f04>] lr : [<ffffff80080d8f04>] pstate:
> 60c001c9
> [ 8103.222605] sp : ffffff8009c1bb40
> ….
> [ 8103.223924] [<ffffff80080d8f04>] ___might_sleep+0x138/0x140
> [ 8103.223965] [<ffffff80080d8d98>] __might_sleep+0x4c/0x80
> [ 8103.224009] [<ffffff80088e4258>] mutex_lock+0x28/0x60
> [ 8103.224054] [<ffffff800850fa2c>] dev_pm_qos_remove_notifier+0x1c/0x54
> [ 8103.224097] [<ffffff8008517814>] genpd_remove_device+0x3c/0x10c
> [ 8103.224140] [<ffffff800851949c>] genpd_dev_pm_detach+0x48/0x108
> [ 8103.224183] [<ffffff80085193e0>] of_genpd_detach_cpu+0x48/0xbc
> [ 8103.224227] [<ffffff80083edea4>] cpu_pd_dying+0x28/0x38
> [ 8103.224268] [<ffffff80080ab2c0>] cpuhp_invoke_callback+0x254/0x5f0
> [ 8103.224308] [<ffffff80080acdec>] take_cpu_down+0x60/0x9c
> [ 8103.224346] [<ffffff800814d898>] multi_cpu_stop+0xac/0x104
> [ 8103.224385] [<ffffff800814dfb8>] cpu_stopper_thread+0xa0/0x118
> [ 8103.224427] [<ffffff80080cff74>] smpboot_thread_fn+0x19c/0x278
> [ 8103.224472] [<ffffff80080cc0c4>] kthread+0x120/0x130
> [ 8103.224513] [<ffffff8008084608>] ret_from_fork+0x10/0x18
Thanks for the report, I will double check my series before I post the
new version of my series. If nothing unexpected shows up, that should
be in a couple of days from now.
I keep you cc.
[...]
Kind regards
Uffe
next prev parent reply other threads:[~2018-11-20 9:51 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 17:22 [PATCH v8 00/26] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 01/26] PM / Domains: Don't treat zero found compatible idle states as an error Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 02/26] PM / Domains: Deal with multiple states but no governor in genpd Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 03/26] PM / Domains: Add generic data pointer to genpd_power_state struct Ulf Hansson
2018-06-24 21:09 ` Rafael J. Wysocki
2018-06-25 8:34 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 04/26] PM / Domains: Add support for CPU devices to genpd Ulf Hansson
2018-07-19 10:25 ` Rafael J. Wysocki
2018-08-03 11:43 ` Ulf Hansson
2018-08-06 9:36 ` Rafael J. Wysocki
2018-08-24 6:47 ` Ulf Hansson
2018-09-14 9:26 ` Rafael J. Wysocki
2018-06-20 17:22 ` [PATCH v8 05/26] PM / Domains: Add helper functions to attach/detach CPUs to/from genpd Ulf Hansson
2018-07-19 10:22 ` Rafael J. Wysocki
2018-08-03 11:44 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 06/26] timer: Export next wakeup time of a CPU Ulf Hansson
2018-07-19 10:15 ` Rafael J. Wysocki
2018-06-20 17:22 ` [PATCH v8 07/26] PM / Domains: Add genpd governor for CPUs Ulf Hansson
2018-07-19 10:32 ` Rafael J. Wysocki
2018-07-26 9:14 ` Rafael J. Wysocki
2018-08-03 14:28 ` Ulf Hansson
2018-08-06 9:20 ` Rafael J. Wysocki
2018-08-09 15:39 ` Lorenzo Pieralisi
2018-08-24 9:26 ` Ulf Hansson
2018-08-24 10:38 ` Lorenzo Pieralisi
2018-08-30 13:36 ` Ulf Hansson
2018-09-13 15:37 ` Lorenzo Pieralisi
2018-09-14 9:50 ` Rafael J. Wysocki
2018-09-14 10:44 ` Lorenzo Pieralisi
2018-09-14 11:34 ` Rafael J. Wysocki
2018-09-14 12:30 ` Lorenzo Pieralisi
2018-08-24 8:29 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 08/26] PM / Domains: Extend genpd CPU governor to cope with QoS constraints Ulf Hansson
2018-07-19 10:35 ` Rafael J. Wysocki
2018-08-03 11:42 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 09/26] kernel/cpu_pm: Manage runtime PM in the idle path for CPUs Ulf Hansson
2018-07-18 10:11 ` Rafael J. Wysocki
2018-07-19 10:12 ` Rafael J. Wysocki
2018-07-19 10:39 ` Rafael J. Wysocki
2018-08-03 11:42 ` Ulf Hansson
2018-08-06 9:37 ` Rafael J. Wysocki
2018-08-08 10:56 ` Lorenzo Pieralisi
2018-08-08 18:02 ` Lina Iyer
2018-08-09 8:16 ` Rafael J. Wysocki
2018-08-10 20:36 ` Lina Iyer
2018-08-12 9:53 ` Rafael J. Wysocki
2018-08-09 9:58 ` Sudeep Holla
2018-08-09 10:25 ` Lorenzo Pieralisi
2018-08-10 20:18 ` Lina Iyer
2018-08-15 10:44 ` Lorenzo Pieralisi
2018-08-24 12:24 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 10/26] dt: psci: Update DT bindings to support hierarchical PSCI states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 11/26] of: base: Add of_get_cpu_state_node() to get idle states for a CPU node Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 12/26] cpuidle: dt: Support hierarchical CPU idle states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 13/26] drivers: firmware: psci: Move psci to separate directory Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 14/26] MAINTAINERS: Update files for PSCI Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 15/26] drivers: firmware: psci: Split psci_dt_cpu_init_idle() Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 16/26] drivers: firmware: psci: Support hierarchical CPU idle states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 17/26] drivers: firmware: psci: Simplify error path of psci_dt_init() Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 18/26] drivers: firmware: psci: Announce support for OS initiated suspend mode Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 19/26] drivers: firmware: psci: Prepare to use " Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 20/26] drivers: firmware: psci: Share a few internal PSCI functions Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 21/26] drivers: firmware: psci: Add support for PM domains using genpd Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 22/26] drivers: firmware: psci: Introduce psci_dt_topology_init() Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 23/26] drivers: firmware: psci: Try to attach CPU devices to their PM domains Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 24/26] drivers: firmware: psci: Deal with CPU hotplug when using OSI mode Ulf Hansson
2018-11-19 19:50 ` Raju P L S S S N
2018-11-20 9:50 ` Ulf Hansson [this message]
2018-11-20 10:47 ` Raju P L S S S N
2018-06-20 17:22 ` [PATCH v8 25/26] arm64: kernel: Respect the hierarchical CPU topology in DT for PSCI Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 26/26] arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 Ulf Hansson
2018-07-03 5:44 ` [PATCH v8 00/26] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) Ulf Hansson
2018-07-03 7:54 ` Rafael J. Wysocki
2018-07-09 11:42 ` Ulf Hansson
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