Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

On Wed, Nov 08, 2017 at 11:58:13AM +0530, Lingutla Chandrasekhar wrote: > khungtask by default monitors all tasks for long unterruptible sleep. > This change introduces a sysctl option, /proc/sys/kernel/ > hung_task_selective_monitoring, to enable monitoring selected tasks. > If this sysctl option

Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

On Wed, Nov 08, 2017 at 11:58:13AM +0530, Lingutla Chandrasekhar wrote: > khungtask by default monitors all tasks for long unterruptible sleep. > This change introduces a sysctl option, /proc/sys/kernel/ > hung_task_selective_monitoring, to enable monitoring selected tasks. > If this sysctl option

Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

On Wed, 8 Nov 2017 20:57:42 +0900 Tetsuo Handa wrote: > Lingutla Chandrasekhar wrote: > > Some tasks may intentionally moves to uninterruptable sleep state, > > which shouldn't leads to khungtask panics, as those are recoverable > > hungs. So to avoid false

Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

On Wed, 8 Nov 2017 20:57:42 +0900 Tetsuo Handa wrote: > Lingutla Chandrasekhar wrote: > > Some tasks may intentionally moves to uninterruptable sleep state, > > which shouldn't leads to khungtask panics, as those are recoverable > > hungs. So to avoid false hung reports, add an option to select

Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

Lingutla Chandrasekhar wrote: > Some tasks may intentionally moves to uninterruptable sleep state, > which shouldn't leads to khungtask panics, as those are recoverable > hungs. So to avoid false hung reports, add an option to select tasks > to be monitored and report/panic them only. What are

Re: [RFC] hung task: check specific tasks for long uninterruptible sleep state

Lingutla Chandrasekhar wrote: > Some tasks may intentionally moves to uninterruptable sleep state, > which shouldn't leads to khungtask panics, as those are recoverable > hungs. So to avoid false hung reports, add an option to select tasks > to be monitored and report/panic them only. What are

[RFC] hung task: check specific tasks for long uninterruptible sleep state

khungtask by default monitors all tasks for long unterruptible sleep. This change introduces a sysctl option, /proc/sys/kernel/ hung_task_selective_monitoring, to enable monitoring selected tasks. If this sysctl option is enabled then only the tasks with /proc/$PID/hang_detection_enabled set are

[RFC] hung task: check specific tasks for long uninterruptible sleep state

khungtask by default monitors all tasks for long unterruptible sleep. This change introduces a sysctl option, /proc/sys/kernel/ hung_task_selective_monitoring, to enable monitoring selected tasks. If this sysctl option is enabled then only the tasks with /proc/$PID/hang_detection_enabled set are

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

On 8/23/2017 2:06 AM, Peter Zijlstra wrote: > On Mon, Aug 21, 2017 at 03:55:53PM +0530, Imran Khan wrote: >> khungtask by default monitors either all tasks or no tasks at all >> for long unterruptible sleeps. >> For Android like environments this arrangement is not optimal because >> on one hand

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

On 8/23/2017 2:06 AM, Peter Zijlstra wrote: > On Mon, Aug 21, 2017 at 03:55:53PM +0530, Imran Khan wrote: >> khungtask by default monitors either all tasks or no tasks at all >> for long unterruptible sleeps. >> For Android like environments this arrangement is not optimal because >> on one hand

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

On Mon, Aug 21, 2017 at 03:55:53PM +0530, Imran Khan wrote: > khungtask by default monitors either all tasks or no tasks at all > for long unterruptible sleeps. > For Android like environments this arrangement is not optimal because > on one hand it may be permissible to have some background(bg)

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

On Mon, Aug 21, 2017 at 03:55:53PM +0530, Imran Khan wrote: > khungtask by default monitors either all tasks or no tasks at all > for long unterruptible sleeps. > For Android like environments this arrangement is not optimal because > on one hand it may be permissible to have some background(bg)

RE: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

Fleming <m...@codeblueprint.co.uk>; > Andrew Morton <a...@linux-foundation.org>; Vegard Nossum > <vegard.nos...@oracle.com>; Tetsuo Handa > <penguin-ker...@i-love.sakura.ne.jp>; John Siddle <jsid...@redhat.com>; open > list <linux-kernel@vger.ker

RE: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

R. > Rodriguez ; Kees Cook ; Peter > Zijlstra (Intel) ; Zhang, Shile (NSB - CN/Hangzhou) > ; Matt Fleming ; > Andrew Morton ; Vegard Nossum > ; Tetsuo Handa > ; John Siddle ; open > list ; open list:PROC SYSCTL > > Subject: [PATCH] RFC: hung task: Check specific tasks

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

gt;; Vegard Nossum > <vegard.nos...@oracle.com>; Tetsuo Handa > <penguin-ker...@i-love.sakura.ne.jp>; John Siddle <jsid...@redhat.com>; open > list <linux-kernel@vger.kernel.org>; open list:PROC SYSCTL > <linux-fsde...@vger.kernel.org> > Subject:

Re: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

lstra (Intel) ; Zhang, Shile (NSB - CN/Hangzhou) > ; Matt Fleming ; > Andrew Morton ; Vegard Nossum > ; Tetsuo Handa > ; John Siddle ; open > list ; open list:PROC SYSCTL > > Subject: [PATCH] RFC: hung task: Check specific tasks for long > uninterruptible sleep state

RE: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

ssum <vegard.nos...@oracle.com>; Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp>; John Siddle <jsid...@redhat.com>; open list <linux-kernel@vger.kernel.org>; open list:PROC SYSCTL <linux-fsde...@vger.kernel.org> Subject: [PATCH] RFC: hung task: Check specific tasks f

RE: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

Intel) ; Zhang, Shile (NSB - CN/Hangzhou) ; Matt Fleming ; Andrew Morton ; Vegard Nossum ; Tetsuo Handa ; John Siddle ; open list ; open list:PROC SYSCTL Subject: [PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state khungtask by default monitors either all tasks o

[PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

khungtask by default monitors either all tasks or no tasks at all for long unterruptible sleeps. For Android like environments this arrangement is not optimal because on one hand it may be permissible to have some background(bg) task in uninterruptible sleep state for long duration while on the

[PATCH] RFC: hung task: Check specific tasks for long uninterruptible sleep state

khungtask by default monitors either all tasks or no tasks at all for long unterruptible sleeps. For Android like environments this arrangement is not optimal because on one hand it may be permissible to have some background(bg) task in uninterruptible sleep state for long duration while on the