linux-kernel - Re: [GIT PULL] devfreq fixes for 5.19-rc5

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Date:   Thu, 30 Jun 2022 15:37:45 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Chanwoo Choi <cwchoi00@...il.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "open list:DEVICE FREQUENCY (DEVFREQ)" <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Chanwoo Choi <chanwoo@...nel.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [GIT PULL] devfreq fixes for 5.19-rc5

On Wed, Jun 29, 2022 at 11:32 PM Chanwoo Choi <cwchoi00@...il.com> wrote:
>
> Dear Rafael,
>
> This is devfreq-fixes pull request for v5.19-rc5. I add detailed description of
> this pull request on the following tag. Please pull devfreq with
> following updates.
>
> Best Regards,
> Chanwoo Choi
>
>
> The following changes since commit 03c765b0e3b4cb5063276b086c76f7a612856a9a:
>
>   Linux 5.19-rc4 (2022-06-26 14:22:10 -0700)
>
> are available in the Git repository at:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git tags/devfreq-fixes-for-5.19-rc5
>
> for you to fetch changes up to f08fe6fcbe13f83558ecccc4acaf5af3dce71a1f:
>
>   PM / devfreq: passive: revert an editing accident in SPDX-License line (2022-06-30 05:11:17 +0900)
>
> ----------------------------------------------------------------
>
> Update devfreq for 5.19-rc5
>
> Detailed description for this pull request:
> 1. Fix devfreq passive governor issue when cpufreq policy are not ready
> during kernel booting because some cpus turn on after kernel booting or others.
>
>   - Re-initialize the vairables of struct devfreq_passive_data when PROBE_DEFER
>   happen when cpufreq_get_returns NULL
>
>   - Use dev_err_probe to mute warning when PROBE_DEFER
>
>   - Fix cpufreq passive unregister erroring on PROBE_DEFER
>   by using the allocated parent_cpu_data list to free resouce
>   instead of for_each_possible_cpu.
>
>   - Remove duplicate cpufreq passive unregister and warning when PROBE_DEFER
>
>   - Use HZ_PER_KZH macro in units.h
>
>   - Fix wrong indentation in SPDX-License line
>
> 2. Fix reference count leak of exynos-ppmu.c by using of_node_put()
>
> 3. Rework freq_table to be local to devfreq struct
>   - struct devfreq_dev_profile includes freq_table array to store
>   the supported frequencies. If devfreq driver doesn't initialize
>   the freq_table, devfreq core allocate the memory and initialize
>   the freq_table.
>
>   On a devfreq PROBE_DEFER, the freq_table in the driver profile struct,
>   is never reset and may be leaved in an undefined state. To fix this
>   and correctly handle PROBE_DEFER, use a local freq_table and
>   max_state in the devfreq struct.
>
> ----------------------------------------------------------------
> Christian Marangi (5):
>       PM / devfreq: Fix kernel panic with cpu based scaling to passive gov
>       PM / devfreq: Mute warning on governor PROBE_DEFER
>       PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER
>       PM / devfreq: Rework freq_table to be local to devfreq struct
>       PM / devfreq: Fix kernel warning with cpufreq passive register fail
>
> Lukas Bulwahn (1):
>       PM / devfreq: passive: revert an editing accident in SPDX-License line
>
> Miaoqian Lin (1):
>       PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events
>
> Yicong Yang (1):
>       PM / devfreq: passive: Use HZ_PER_KHZ macro in units.h
>
>  drivers/devfreq/devfreq.c           | 76 ++++++++++++++++++-------------------
>  drivers/devfreq/event/exynos-ppmu.c |  8 +++-
>  drivers/devfreq/governor_passive.c  | 62 +++++++++++++-----------------
>  include/linux/devfreq.h             |  5 +++
>  4 files changed, 75 insertions(+), 76 deletions(-)

Pulled and pushed out, thanks!