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Subject(Ping?) [GIT PULL] isolation: 1Hz residual tick offloading v4
Hi,

Any chance this can either get pulled or declined as the merge window is
starting?

Thanks.

On Fri, Jan 19, 2018 at 01:02:14AM +0100, Frederic Weisbecker wrote:
> Ingo,
>
> Please pull the sched/0hz-v2 branch that can be found at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> sched/0hz-v2
>
> HEAD: 9b14d5204490f9acd03998a5e406ecadb87cddba
>
> Changes in v4:
>
> * Remove the nohz_offload option, just stick with the existing interface,
> the change is transparent. Suggested by Luiz.
>
> * Automatically pin workqueues to housekeepers.
>
> ---
> Now that scheduler_tick() has become resilient towards the absence of
> ticks, current->sched_class->task_tick() is the last piece that needs
> at least 1Hz tick to keep scheduler stats alive.
>
> This patchset offloads this residual 1Hz tick to workqueues. This way
> the nohz full CPUs don't have anymore tick (assuming nothing else
> requires it) as their residual 1Hz tick get handled by the housekeepers.
>
> Nothing special is required for testing, just use the usual kernel
> parameters, say on CPUs 1-7:
>
> "nohz_full=1-7"
> or
> "isolcpus=nohz_offload,domain,1-7"
>
> Thanks,
> Frederic
> ---
>
> Frederic Weisbecker (6):
> sched: Rename init_rq_hrtick to hrtick_rq_init
> nohz: Allow to check if remote CPU tick is stopped
> sched/isolation: Isolate workqueues when "nohz_full=" is set
> sched/isolation: Residual 1Hz scheduler tick offload
> sched/nohz: Remove the 1 Hz tick code
> sched/isolation: Tick offload documentation
>
>
> Documentation/admin-guide/kernel-parameters.txt | 6 +-
> include/linux/sched/isolation.h | 1 +
> include/linux/sched/nohz.h | 4 -
> include/linux/tick.h | 2 +
> kernel/sched/core.c | 104 +++++++++++++++++-------
> kernel/sched/idle_task.c | 1 -
> kernel/sched/isolation.c | 8 +-
> kernel/sched/sched.h | 13 +--
> kernel/time/tick-sched.c | 13 +--
> kernel/workqueue.c | 3 +-
> 10 files changed, 103 insertions(+), 52 deletions(-)

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