Re: [PATCH v4 07/16] sched/core: uclamp: extend cpu's cgroup controller
From: Patrick Bellasi
Date: Wed Aug 29 2018 - 04:54:06 EST
On 28-Aug 11:29, Randy Dunlap wrote:
> On 08/28/2018 06:53 AM, Patrick Bellasi wrote:
> > +config UCLAMP_TASK_GROUP
> > + bool "Utilization clamping per group of tasks"
> > + depends on CGROUP_SCHED
> > + depends on UCLAMP_TASK
> > + default n
> > + help
> > + This feature enables the scheduler to track the clamped utilization
> > + of each CPU based on RUNNABLE tasks currently scheduled on that CPU.
> > +
> > + When this option is enabled, the user can specify a min and max
> > + CPU bandwidth which is allowed for each single task in a group.
> > + The max bandwidth allows to clamp the maximum frequency a task
> > + can use, while the min bandwidth allows to define a minimum
> > + frequency a task will always use.
> > +
> > + When task group based utilization clamping is enabled, an eventually
> > + specified task-specific clamp value is constrained by the cgroup
> > + specified clamp value. Both minimum and maximum task clamping cannot
> > + be bigger than the corresponding clamping defined at task group level.
> The 4 lines above should all be indented the same (one tab + 2 spaces).
Right... then there's definitively something broken with my vim
reformat shortcut, which sometimes uses spaces instead of tabs :(
Unfortunately this pattern is not covered by checkpatch, which
returns not errors/warnings on this patch.
> > +
> > + If in doubt, say N.
> > +
Anyway, thanks for spotting it... easy fix for the next respin.