Re: [PATCH 3/3] sched_ext: scx_qmap: Also re-enqueue stranded tasks with scx_bpf_dsq_reenq_task()

[Andrea Righi]

On Sat, Oct 17, 2026 at 01:35:13PM -1000, Tejun Heo wrote:
> Hello, Andrea.
> 
> On Sun, Oct 18, 2026 at 01:06:39AM +0200, Andrea Righi wrote:
> > > +	if (p->pid & 1) {
> >
> > nit: if ((p->pid & 1) && __COMPAT_has_dsq_reenq_task())
> 
> scx_qmap is already 7.4-only. It implements ops.sub_cid_sched_updated() and
> ops.sub_child_ecaps_updated(), which older kernels don't have, so it doesn't
> load there anyway.
> 
> Given what qmap is used for, it'd probably make sense to rip out all the
> compat stuff from it and just pair it with the latest kernel by default.

Ah right, it doesn't even load with on kernels. Then ripping all the compat bits
is probably a good thing to do.

Thanks,
-Andrea