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    SubjectRe: [PATCH 0/4] scheduler-based cpu frequency scaling
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    On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote:
    > This series implements an event-driven cpufreq governor that scales cpu
    > frequency as a function of cfs runqueue utilization. The intent of this RFC is
    > to get some discussion going about how the scheduler can become the policy
    > engine for selecting cpu frequency, what limitations exist and what design do
    > we want to take to get to a solution.
    >
    > This work is a different take on the patches I posted in November:
    > http://lkml.kernel.org/r/<1413958051-7103-1-git-send-email-mturquette@linaro.org>
    >
    > This series depends on having frequency-invariant representations for load.
    > This requires Vincent's recently merged cpu capacity rework patches, as well as
    > a new patch from Morten included here. Morten's patch will likely make an
    > appearance in his energy aware scheduling v4 series.
    >
    > Thanks to Juri Lelli <juri.lelli@arm.com> for contributing to the development
    > of the governor.
    >
    > A git branch with these patches can be pulled from here:
    > https://git.linaro.org/people/mike.turquette/linux.git sched-freq
    >
    > Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800
    > Chromebook2. Extensive benchmarking and regression testing has not yet been
    > done. Before sinking too much time into extensive testing I'd like to get
    > feedback on the general design.
    >
    > Michael Turquette (3):
    > sched: sched feature for cpu frequency selection
    > sched: export get_cpu_usage & capacity_orig_of
    > sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling
    >
    > Morten Rasmussen (1):
    > arm: Frequency invariant scheduler load-tracking support
    >
    > arch/arm/include/asm/topology.h | 7 +
    > arch/arm/kernel/smp.c | 53 ++++++-
    > arch/arm/kernel/topology.c | 17 +++
    > drivers/cpufreq/Kconfig | 24 ++++
    > include/linux/cpufreq.h | 3 +
    > kernel/sched/Makefile | 1 +
    > kernel/sched/cpufreq_cfs.c | 311 ++++++++++++++++++++++++++++++++++++++++
    > kernel/sched/fair.c | 48 +++----
    > kernel/sched/features.h | 6 +
    > kernel/sched/sched.h | 39 +++++
    > 10 files changed, 475 insertions(+), 34 deletions(-)
    > create mode 100644 kernel/sched/cpufreq_cfs.c

    Can you *please* always CC PM-related patches to linux-pm?


    --
    I speak only for myself.
    Rafael J. Wysocki, Intel Open Source Technology Center.


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