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
next reply other threads:[~2022-06-06 11:11 UTC|newest]
Thread overview: 7+ 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
2022-06-10 6:41 ` Dan Carpenter
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
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