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SubjectRe: [PATCH V3 0/6] PM / Domains: Allow performance state propagation
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On 12/12/2018 4:27 PM, Viresh Kumar wrote:
> Hi,
>
> This series adds performance state propagation support in genpd core.
> The propagation happens from the sub-domains to their masters. More
> details can be found in the individual commit logs.
>
> This is tested on hikey960 by faking power domains in such a way that
> the CPU devices have two power domains and both of them have the same
> master domain. The CPU device, as well as its power domains have
> "required-opps" property set and the performance requirement from the
> CPU eventually configures all the domains (2 sub-domains and 1 master).
>
> Based on opp/linux-next branch (which is 4.20-rc1 +
> multiple-power-domain-support-in-opp-core + some OPP fixes).
>
> Rajendra has already tested the previous version of this series and so I
> have included his Tested-by for all patches.

I also tested this on top of my v7 [1] of rpm power domain series and things
continue to work as expected for the cx/mx propagation so I am fine with my
Tested-by on all the patches.

[1] https://lkml.org/lkml/2018/12/12/174

>
> V2->V3:
> - Include Ulf's patch (sent separately earlier) with this series.
> - The performance state update code doesn't rely anymore on the power
> on/off state of the genpd, it sets and propagates rate in all cases.
> - That simplified a lot of code from V2 in _genpd_power_on().
> - commit logs improved for few commits.
> - s/mstate/master_state/
> - and few more minor changes.
>
> v1->V2:
> - First patch (1/5) is new and an improvement to earlier stuff.
> - Move genpd_status_on() check to _genpd_reeval_performance_state() from
> _genpd_set_performance_state().
> - Improve dev_pm_opp_xlate_performance_state() to handle 1:1 pstate
> mapping between genpd and its master and also to fix a problem while
> finding the dst_table.
> - Handle pstate=0 case properly.
>
> --
> viresh
>
> Ulf Hansson (1):
> PM / Domains: Make genpd performance states orthogonal to the
> idlestates
>
> Viresh Kumar (5):
> OPP: Improve _find_table_of_opp_np()
> OPP: Add dev_pm_opp_xlate_performance_state() helper
> PM / Domains: Save OPP table pointer in genpd
> PM / Domains: Factorize dev_pm_genpd_set_performance_state()
> PM / Domains: Propagate performance state updates
>
> drivers/base/power/domain.c | 207 ++++++++++++++++++++++++++----------
> drivers/opp/core.c | 59 ++++++++++
> drivers/opp/of.c | 14 ++-
> include/linux/pm_domain.h | 6 ++
> include/linux/pm_opp.h | 7 ++
> 5 files changed, 235 insertions(+), 58 deletions(-)
>

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