PDS 0.99a release

PDS 0.99a is released with the following changes

1. Fix sugov_kthread_create fail to set policy.(Thanks jwh7's reporting and testing)
2. Fix task burst fairness issue. Thanks Holger reporting video playback issue, which remind me my mpv lost frame when running "git checkout", that burst creating a lot "git" tasks, I used to believe it is high io usage issue and ignored it. I'm not sure if this commit fix Holger's issue or not, but hopefully it will help.

This is another bug fix release. For #1, current fix is not perfect. I'll leave it to next kernel release cycle to decide how PDS handling mainline existed scheduler policies.

Enjoy PDS 0.99a for v4.18 kernel, :)

Code are available at https://gitlab.com/alfredchen/linux-pds
All-in-one patch is available too.

PDS 0.98z release

PDS 0.98z is released with the following changes

1. Fix and improvement in the previous release.
2. Re-mapping SCHED_DEADLINE to SCHED_FIFO, which fix cpufreq_schedutil create kernel thread as SCHED_DEADLINE(thanks jwh7 for reporting)

This is a bug fix release. I'd like to let PDS stable for awhile in the incoming releases.

Enjoy PDS 0.98z for v4.18 kernel, :)

Code are available at https://gitlab.com/alfredchen/linux-pds
All-in-one patch is available too.

PDS 0.98y release

PDS 0.98y is released with the following changes

1. Enable SMT_NICE scheduling.  Below is the commit msg of this commit
"""
    Firstly, look at the kernel compilation test result without(-j4) and with SMT(-j8).
   
    Without SMT(-j4)        With SMT(-j8)
    4m30s                   3m40s
   
    In the scenario IDLE and NORMAL(BATCH,ISO,RT) policy tasks run together,
    IDLE tasks can be supressed to run on SMT sibling cpus and let the other
    policy tasks run without SMT. In this way, tasks with other policy will
    take high priority and completed sooner than run with IDLE tasks on SMT
    sibling cpus. This is called the SMT_NICE scheduling.
   
    Below is the test results of SMT_NICE disabled and SMT_NICE enabled.
   
                    SMT_NICE disabled       SMT_NICE enabled
    NORMAL(-j4)     6m56s                   5m3s
    IDLE(-j4)       7m10s                   8m30s
"""

Hopefully this commit can help with who has IDLE task running in the backgroup to improve the fontgroup task interactivity.

Enjoy PDS 0.98y for v4.18 kernel, :)

Code are available at https://gitlab.com/alfredchen/linux-pds.
All-in-one patch is available too.

PDS 0.98x release

PDS 0.98x is released with the following changes

1. Add cgroup stub. Thanks Oleksandr Natalenko for this porting, I don't have to test cgroup related stuff myselft, hopefully the stub make cgroup related application happy.
2. Revert "Rework rq->sl_header data structure". It turns out that the rq-sl_header data structure change makes some system unstable. So it is reverted, I'll try to bring it back after SMT_NICE feature code are published.

Hopefully this is the last release before SMT_NICE feature code submit.

Enjoy PDS 0.98x for v4.18 kernel, :)

Code are available at https://gitlab.com/alfredchen/linux-pds.
All-in-one patch is available too.