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From: Greg KH <gregkh@linuxfoundation.org>
To: Abhinav Kumar <quic_abhinavk@quicinc.com>
Cc: johannes@sipsolutions.net, linux-kernel@vger.kernel.org,
	rafael@kernel.org, robdclark@gmail.com,
	dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
	freedreno@lists.freedesktop.org, seanpaul@chromium.org,
	swboyd@chromium.org, nganji@codeaurora.org,
	aravindh@codeaurora.org, khsieh@codeaurora.org, daniel@ffwll.ch,
	dmitry.baryshkov@linaro.org
Subject: Re: [PATCH] devcoredump: increase the device delete timeout to 10 mins
Date: Fri, 11 Feb 2022 12:09:38 +0100	[thread overview]
Message-ID: <YgZD8vPqB7ISpRpZ@kroah.com> (raw)
In-Reply-To: <1644349472-31077-1-git-send-email-quic_abhinavk@quicinc.com>

On Tue, Feb 08, 2022 at 11:44:32AM -0800, Abhinav Kumar wrote:
> There are cases where depending on the size of the devcoredump and the speed
> at which the usermode reads the dump, it can take longer than the current 5 mins
> timeout.
> 
> This can lead to incomplete dumps as the device is deleted once the timeout expires.
> 
> One example is below where it took 6 mins for the devcoredump to be completely read.
> 
> 04:22:24.668 23916 23994 I HWDeviceDRM::DumpDebugData: Opening /sys/class/devcoredump/devcd6/data
> 04:28:35.377 23916 23994 W HWDeviceDRM::DumpDebugData: Freeing devcoredump node

What makes this so slow?  Reading from the kernel shouldn't be the
limit, is it where the data is being sent to?

> Increase the timeout to 10 mins to accommodate system delays and large coredump
> sizes.

Nit, please wrap your changelog texts at 72 columns.

And what is "large"?

thanks,

greg k-h

WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh@linuxfoundation.org>
To: Abhinav Kumar <quic_abhinavk@quicinc.com>
Cc: rafael@kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	swboyd@chromium.org, khsieh@codeaurora.org,
	nganji@codeaurora.org, seanpaul@chromium.org,
	dmitry.baryshkov@linaro.org, johannes@sipsolutions.net,
	aravindh@codeaurora.org, freedreno@lists.freedesktop.org
Subject: Re: [PATCH] devcoredump: increase the device delete timeout to 10 mins
Date: Fri, 11 Feb 2022 12:09:38 +0100	[thread overview]
Message-ID: <YgZD8vPqB7ISpRpZ@kroah.com> (raw)
In-Reply-To: <1644349472-31077-1-git-send-email-quic_abhinavk@quicinc.com>

On Tue, Feb 08, 2022 at 11:44:32AM -0800, Abhinav Kumar wrote:
> There are cases where depending on the size of the devcoredump and the speed
> at which the usermode reads the dump, it can take longer than the current 5 mins
> timeout.
> 
> This can lead to incomplete dumps as the device is deleted once the timeout expires.
> 
> One example is below where it took 6 mins for the devcoredump to be completely read.
> 
> 04:22:24.668 23916 23994 I HWDeviceDRM::DumpDebugData: Opening /sys/class/devcoredump/devcd6/data
> 04:28:35.377 23916 23994 W HWDeviceDRM::DumpDebugData: Freeing devcoredump node

What makes this so slow?  Reading from the kernel shouldn't be the
limit, is it where the data is being sent to?

> Increase the timeout to 10 mins to accommodate system delays and large coredump
> sizes.

Nit, please wrap your changelog texts at 72 columns.

And what is "large"?

thanks,

greg k-h

  parent reply	other threads:[~2022-02-11 11:09 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-08 19:44 [PATCH] devcoredump: increase the device delete timeout to 10 mins Abhinav Kumar
2022-02-08 19:44 ` Abhinav Kumar
2022-02-08 20:35 ` Johannes Berg
2022-02-08 20:35   ` Johannes Berg
2022-02-08 21:04   ` Abhinav Kumar
2022-02-08 21:04     ` Abhinav Kumar
2022-02-08 21:12     ` Johannes Berg
2022-02-08 21:12       ` Johannes Berg
2022-02-08 21:40       ` Abhinav Kumar
2022-02-08 21:40         ` Abhinav Kumar
2022-02-08 21:54         ` Johannes Berg
2022-02-09  1:55           ` Abhinav Kumar
2022-02-09  1:55             ` Abhinav Kumar
2022-02-09  7:50             ` Johannes Berg
2022-02-09 16:29               ` Abhinav Kumar
2022-02-09 16:29                 ` Abhinav Kumar
2022-02-11 11:09             ` Greg KH
2022-02-11 11:09               ` Greg KH
2022-02-11 11:09 ` Greg KH [this message]
2022-02-11 11:09   ` Greg KH
2022-02-11 18:59   ` Abhinav Kumar
2022-02-11 18:59     ` Abhinav Kumar
2022-02-12  7:04     ` Greg KH
2022-02-12  7:04       ` Greg KH
2022-02-12  7:52       ` Abhinav Kumar
2022-02-12  7:52         ` Abhinav Kumar
2022-02-12  8:24         ` Johannes Berg
2022-02-12  8:24           ` Johannes Berg
2022-02-12  8:35           ` Abhinav Kumar
2022-02-12  8:35             ` Abhinav Kumar
2022-02-28 21:38             ` Abhinav Kumar
2022-02-28 21:38               ` Abhinav Kumar
2022-03-01  6:48               ` David Laight
2022-03-01 17:45                 ` Rob Clark
2022-03-01 17:45                   ` Rob Clark
2022-03-11 11:53                   ` Johannes Berg
2022-03-11 11:53                     ` Johannes Berg
2022-02-12  8:29         ` Greg KH
2022-02-12  8:29           ` Greg KH
2022-02-12  8:33           ` Abhinav Kumar
2022-02-12  8:33             ` Abhinav Kumar

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