Re: [PATCH v4 0/4] cpufreq: qcom-hw: Fixes for cpu hotplug support

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Sat 26 Mar 08:51 PDT 2022, Dmitry Baryshkov wrote:

> This patchseries aims at fixing and improving CPU hotplug support on
> Qualcomm platforms. First three patches are the fixes for the LMH
> support in the cpufreq driver. The last patch adds support for
> lightweight offline() and online() callbacks which are used instead of
> exit() and init() each time the CPU is put offline or back online.
> 
> Patches 1-3 being pure simple fixes can be applied during the -rc
> stage, while patch 4 is targeting next development cycle
> 

Viresh, please consider picking up patch 1-3 for v5.18-rc.

Thanks,
Bjorn

> Changes since v3:
> - Readd throttled_freq calculation disappearing from the third patch.
> 
> Changes since v2:
> - Point Fixes tag from the first patch to the correct commit
> - Replace huge patch 2 with one-liner thanks to being able to use
>   policy->related_cpus instead of policy->cpus
> 
> Changes since v1:
> - Update commit message for the first patch to describe why dropping
>   affinity hint is required (before calling free_irq()),
> - Fixed commit message for the second patch to include messages
>   generated using the mainline kernel w/o additional patches,
> - Changed third patch to use dev_warn_ratelimited(),
> - Reworked last patch to move request_irq/free_irq to online()/offline()
>   to make sure that the IRQ isn't left enabled after the CPU has been
>   put offline.
> 
> 
> Dmitry Baryshkov (4):
>   cpufreq: qcom-hw: drop affinity hint before freeing the IRQ
>   cpufreq: qcom-hw: fix the race between LMH worker and cpuhp
>   cpufreq: qcom-hw: fix the opp entries refcounting
>   cpufreq: qcom-hw: provide online/offline operations
> 
>  drivers/cpufreq/qcom-cpufreq-hw.c | 45 ++++++++++++++++++++++++++-----
>  1 file changed, 38 insertions(+), 7 deletions(-)
> 
> -- 
> 2.35.1
>