On Wed, Mar 03, 2021 at 11:46:55AM +0800, Chengming Zhou wrote: > This patch series is RESEND of the previous patches on psi subsystem. A few > weeks passed since the last review, so I put them together and resend for > more convenient review and merge. > > Patch 1 add PSI_CPU_FULL state means all non-idle tasks in a cgroup are > delayed > on the CPU resource which used by others outside of the cgroup or throttled > by the cgroup cpu.max configuration. > > Patch 2 use ONCPU state and the current in_memstall flag to detect reclaim, > remove the hook in timer tick to make code more concise and maintainable. > And patch 3 adds unlikely() annotations to move the pressure state branches > out of line to eliminate undesirable jumps during wakeup and sleeps. > > Patch 4 optimize the voluntary sleep switch by remove one call of > psi_group_change() for every common cgroup ancestor of the two tasks. > > Chengming Zhou (3): > psi: Add PSI_CPU_FULL state > psi: Use ONCPU state tracking machinery to detect reclaim > psi: Optimize task switch inside shared cgroups > > Johannes Weiner (1): > psi: pressure states are unlikely
Peter, would you mind routing these through the sched tree for 5.13?
