Re: [PATCH] sched/core: Use empty mask to reset cpumasks in sched_setaffinity()

[Peter Zijlstra]

On Mon, Jul 03, 2023 at 10:55:02AM -0400, Waiman Long wrote:

> Our OpenShift team has actually hit a problem with the recent persistent
> user provided cpu affinity change because they are relying on the fact that
> moving a task to a different cpuset will reset cpu affinity to the cpuset
> default which is no longer true. That is the main reason behind this patch
> to provide a way to reset cpu affinity to the cpuset default.

Where is the sched_setaffinity() in that story?

So somewhere this thing did a sched_setaffinity() and then starts
playing with cpusets. Instead of adding more sched_setaffinity() calls,
can't it just remove some?