linux-kernel - [RFC V2 0/6] cpufreq: transition-latency cleanups

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Date:   Thu, 13 Jul 2017 11:10:51 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux@...inikbrodowski.net, Ingo Molnar <mingo@...hat.com>,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Sudeep Holla <sudeep.holla@....com>
Subject: [RFC V2 0/6] cpufreq: transition-latency cleanups

Hi Rafael,

Here is the V2 and sending it as RFC this time.

This series tries to cleanup the code around transition-latency and its
users.  Some of the old legacy code, which may not make much sense now,
is dropped as well.

Some code consolidation also done across governors.

Based of: pm/linux-next
Tested on: ARM64 Hikey board.

V1->V2:
- While we still get rid of the limitation of 10ms for using
  ondemand/conservative, but we preserve the earlier behavior where the
  transition latency set to CPUFREQ_ETERNAL would not allow use of
  ondemand/conservative governors. Thanks to Dominik for his feedback on
  that.

--
viresh

Viresh Kumar (6):
  cpufreq: Replace "max_transition_latency" with "dynamic_switching"
  cpufreq: schedutil: Set dynamic_switching to true
  cpufreq: governor: Drop min_sampling_rate
  cpufreq: Use transition_delay_us for legacy governors as well
  cpufreq: Cap the default transition delay value to 10 ms
  cpufreq: arm_big_little: Make ->get_transition_latency() mandatory

 Documentation/admin-guide/pm/cpufreq.rst |  8 -------
 drivers/cpufreq/arm_big_little.c         | 10 ++++-----
 drivers/cpufreq/cpufreq.c                |  8 +++----
 drivers/cpufreq/cpufreq_conservative.c   |  6 ------
 drivers/cpufreq/cpufreq_governor.c       | 17 ++-------------
 drivers/cpufreq/cpufreq_governor.h       |  3 +--
 drivers/cpufreq/cpufreq_ondemand.c       | 12 -----------
 include/linux/cpufreq.h                  | 36 ++++++++++++++++++++++++--------
 kernel/sched/cpufreq_schedutil.c         | 12 ++---------
 9 files changed, 40 insertions(+), 72 deletions(-)

-- 
2.13.0.71.gd7076ec9c9cb