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From: Christian 'Ansuel' Marangi <ansuelsmth@gmail.com>
To: MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Saravana Kannan <skannan@codeaurora.org>,
	Sibi Sankar <sibis@codeaurora.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Christian 'Ansuel' Marangi <ansuelsmth@gmail.com>
Subject: [PATCH 0/5] PM / devfreq: Various Fixes to cpufreq based passive governor
Date: Mon,  6 Jun 2022 13:10:59 +0200	[thread overview]
Message-ID: <20220606111104.14534-1-ansuelsmth@gmail.com> (raw)

While developing a krait cache scaling devfreq driver I encounter tons
of panics and errors with using the new cpufreq passive governor
functions. While the krait cache scaling is still WIP and required some
testing I would like to push all the fixes to make the new
implementation wroking since currently with a the governor
PROBE_DEFERRing all sort of things happen from kernel panic from invalid
address access to freq_table getting corrupted.

With the following fixes my WIP driver works correctly without any
warning/problems. 

Christian 'Ansuel' Marangi (5):
  PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER
  PM / devfreq: Fix kernel warning with cpufreq passive register fail
  PM / devfreq: Fix kernel panic with cpu based scaling to passive gov
  PM / devfreq: Rework freq_table to be local to devfreq struct
  PM / devfreq: Mute warning on governor PROBE_DEFER

 drivers/devfreq/devfreq.c          | 75 ++++++++++++++----------------
 drivers/devfreq/governor_passive.c | 39 ++++++----------
 include/linux/devfreq.h            |  4 ++
 3 files changed, 53 insertions(+), 65 deletions(-)

-- 
2.36.1


             reply	other threads:[~2022-06-06 11:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-06 11:10 Christian 'Ansuel' Marangi [this message]
2022-06-06 11:11 ` [PATCH 1/5] PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER Christian 'Ansuel' Marangi
2022-06-06 11:11 ` [PATCH 2/5] PM / devfreq: Fix kernel warning with cpufreq passive register fail Christian 'Ansuel' Marangi
2022-06-06 11:11 ` [PATCH 3/5] PM / devfreq: Fix kernel panic with cpu based scaling to passive gov Christian 'Ansuel' Marangi
2022-06-06 11:11 ` [PATCH 4/5] PM / devfreq: Rework freq_table to be local to devfreq struct Christian 'Ansuel' Marangi
2022-06-06 11:11 ` [PATCH 5/5] PM / devfreq: Mute warning on governor PROBE_DEFER Christian 'Ansuel' Marangi
  -- strict thread matches above, loose matches on Subject: below --
2022-06-10  3:25 [PATCH 1/5] PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER kernel test robot
2022-06-10  6:41 ` Dan Carpenter
2022-06-10  6:41 ` Dan Carpenter

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