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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Doug Smythies <dsmythies@telus.net>
Cc: Linux PM list <linux-pm@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	lukasz.luba@arm.com, "Rafael J. Wysocki" <rafael@kernel.org>,
	gregkh@linuxfoundation.org
Subject: Re: [PATCH v6 3/7] powercap/drivers/dtpm: Simplify the dtpm table
Date: Fri, 26 Nov 2021 18:40:26 +0100	[thread overview]
Message-ID: <1e75f7ff-4b1b-ff47-2344-903605067693@linaro.org> (raw)
In-Reply-To: <CAAYoRsURO1tf03nfiki1uaXYEmTKQyYKUeTyKW+vefrVzCO7jg@mail.gmail.com>

On 26/11/2021 18:08, Doug Smythies wrote:
> Hi Daniel,
> 
> This patch introduces a regression, at least on my test system.
> I can no longer change CPU frequency scaling drivers, for example
> from intel_cpufreq (A.K.A intel_pstate in passive mode) to intel_pstate
> (A.K.A. active mode). The task just hangs forever.
> 
> I bisected the kernel and got this commit as the result.
> As a double check, I reverted this commit:
> 7a89d7eacf8e84f2afb94db5ae9d9f9faa93f01c
> on kernel 5.16-rc2 and the issue was resolved.
> 
> While your email is fairly old, I observe that it was only included as of
> kernel 5.16-rc1.

Could it be related to and fixed by:

https://lore.kernel.org/all/20211108062345.273855-1-daniel.lezcano@linaro.org/

?

> Command Example that never completes:
> 
> $ echo passive | sudo tee /sys/devices/system/cpu/intel_pstate/status
> 
> syslog excerpt attached.
> 
> ... Doug



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  parent reply	other threads:[~2021-11-26 18:01 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-01 18:36 [PATCH v6 1/7] powercap/drivers/dtpm: Encapsulate even more the code Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 2/7] powercap/drivers/dtpm: Create a registering system Daniel Lezcano
2021-04-01 19:28   ` Greg KH
2021-04-01 22:08     ` Daniel Lezcano
2021-04-02  8:02       ` Greg KH
2021-04-02 11:10         ` Daniel Lezcano
2021-04-02 11:48           ` Greg KH
2021-04-01 18:36 ` [PATCH v6 3/7] powercap/drivers/dtpm: Simplify the dtpm table Daniel Lezcano
2021-11-26 17:08   ` Doug Smythies
2021-11-26 17:21     ` Rafael J. Wysocki
2021-11-26 17:43       ` Daniel Lezcano
2021-11-26 18:18         ` Rafael J. Wysocki
2021-11-26 21:56         ` Doug Smythies
2021-11-26 23:05           ` Daniel Lezcano
2021-11-26 23:08             ` [PATCH] powercap/drivers/dtpm: Disable dtpm at boot time Daniel Lezcano
2021-11-26 23:10               ` Daniel Lezcano
2021-11-27  1:13                 ` Doug Smythies
2021-12-01 18:56                   ` Rafael J. Wysocki
2021-11-26 19:10       ` [PATCH v6 3/7] powercap/drivers/dtpm: Simplify the dtpm table Doug Smythies
2021-11-26 19:29         ` Rafael J. Wysocki
2021-11-30 16:46           ` Daniel Lezcano
2021-11-26 17:40     ` Daniel Lezcano [this message]
2021-11-26 18:23       ` Rafael J. Wysocki
2021-04-01 18:36 ` [PATCH v6 4/7] powercap/drivers/dtpm: Use container_of instead of a private data field Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 5/7] powercap/drivers/dtpm: Scale the power with the load Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 6/7] powercap/drivers/dtpm: Export the symbols for the modules Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 7/7] powercap/drivers/dtpm: Allow dtpm node device creation through configfs Daniel Lezcano
2021-04-01 19:37   ` Greg KH
2021-04-02 10:54     ` Daniel Lezcano
2021-04-02 10:54     ` Daniel Lezcano

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