From: Viresh Kumar <viresh.kumar@linaro.org>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Jan Kara <jack@suse.cz>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Tejun Heo <tj@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
vlevenetz@mm-sol.com, vaibhav.hiremath@linaro.org,
alex.elder@linaro.org, johan@kernel.org,
akpm@linux-foundation.org, rostedt@goodmis.org,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Linux PM list <linux-pm@vger.kernel.org>
Subject: Re: [Query] Preemption (hogging) of the work handler
Date: Tue, 12 Jul 2016 06:02:31 -0700 [thread overview]
Message-ID: <20160712130231.GM4695@ubuntu> (raw)
In-Reply-To: <2571775.VuqrgkDp1o@vostro.rjw.lan>
On 12-07-16, 14:24, Rafael J. Wysocki wrote:
> On Monday, July 11, 2016 03:46:01 PM Viresh Kumar wrote:
> > Yeah and I am not sure how should I go ahead about this issue now :)
>
> FWIW, I think the reason why the "synchronous printk" works is because after
> disabling the non-boot CPU, the only remaining one disables local interrupts
> and won't do any async work any more until resume.
Right. After disabling interrupts, the other printk messages gets
printed only after the system resumes. I am not that worried about
printk not working after that point, but on how does asynchronous
printing affect the system to crash or come to a complete hang?
Any clues on why that can happen ?
> But you started to talk about suspend/resume and such at one point and that
> message should have been CCed to linux-pm.
>
> And the reason why is because problems you see during suspend/resume may very
> well be suspend-specific and not visible otherwise. In which case you'll
> likely need input from the people on linux-pm.
Yeah, I *should* have cc'd the PM list then. Thanks for helping out
Rafael :)
--
viresh
next prev parent reply other threads:[~2016-07-12 13:02 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 16:59 [Query] Preemption (hogging) of the work handler Viresh Kumar
2016-07-01 17:22 ` Tejun Heo
2016-07-01 17:28 ` Viresh Kumar
2016-07-06 18:28 ` Viresh Kumar
2016-07-06 19:23 ` Steven Rostedt
2016-07-06 19:25 ` Viresh Kumar
2016-07-11 10:26 ` Jan Kara
2016-07-11 15:44 ` Sergey Senozhatsky
2016-07-11 22:35 ` Viresh Kumar
2016-07-11 22:44 ` Rafael J. Wysocki
2016-07-11 22:46 ` Viresh Kumar
2016-07-12 12:24 ` Rafael J. Wysocki
2016-07-12 13:02 ` Viresh Kumar [this message]
2016-07-12 13:56 ` Petr Mladek
2016-07-12 14:04 ` Viresh Kumar
2016-07-12 9:38 ` Sergey Senozhatsky
2016-07-12 12:52 ` Petr Mladek
2016-07-12 13:12 ` Viresh Kumar
2016-07-12 17:11 ` Viresh Kumar
2016-07-12 19:59 ` Rafael J. Wysocki
2016-07-12 20:08 ` Viresh Kumar
2016-07-13 7:00 ` Sergey Senozhatsky
2016-07-13 12:05 ` Rafael J. Wysocki
2016-07-13 12:57 ` Sergey Senozhatsky
2016-07-13 13:22 ` Rafael J. Wysocki
2016-07-12 14:03 ` Sergey Senozhatsky
2016-07-12 14:12 ` Viresh Kumar
2016-07-14 23:52 ` Viresh Kumar
2016-07-15 13:11 ` Sergey Senozhatsky
2016-07-15 15:57 ` Viresh Kumar
2016-07-12 23:19 ` Viresh Kumar
2016-07-13 0:18 ` Viresh Kumar
2016-07-13 5:45 ` Sergey Senozhatsky
2016-07-13 15:39 ` Viresh Kumar
2016-07-13 23:08 ` Rafael J. Wysocki
2016-07-13 23:18 ` Viresh Kumar
2016-07-13 23:38 ` Greg Kroah-Hartman
2016-07-14 0:55 ` Sergey Senozhatsky
2016-07-14 1:09 ` Rafael J. Wysocki
2016-07-14 1:32 ` Sergey Senozhatsky
2016-07-14 21:57 ` Viresh Kumar
2016-07-14 21:55 ` Viresh Kumar
2016-07-14 14:12 ` Jan Kara
2016-07-14 14:33 ` Rafael J. Wysocki
2016-07-14 14:39 ` Jan Kara
2016-07-14 14:47 ` Rafael J. Wysocki
2016-07-14 14:55 ` Jan Kara
2016-07-14 22:14 ` Viresh Kumar
2016-07-14 14:34 ` Sergey Senozhatsky
2016-07-14 15:03 ` Jan Kara
2016-07-14 22:12 ` Viresh Kumar
2016-07-18 11:01 ` Jan Kara
2016-07-18 11:49 ` Rafael J. Wysocki
2016-07-29 20:42 ` Viresh Kumar
2016-07-30 2:12 ` Sergey Senozhatsky
2016-07-11 19:03 ` Viresh Kumar
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