Re: [PATCH 5/5] sched: Rework sched_class::wakeup_preempt() and rq_modified_*()

Andrea Righi
2025-11-28T22:29:51Z

Hi Peter,

On Thu, Nov 27, 2025 at 04:39:48PM +0100, Peter Zijlstra wrote:
...
> --- a/kernel/sched/sched.h
> +++ b/kernel/sched/sched.h
> @@ -1119,7 +1119,6 @@ struct rq {
> raw_spinlock_t __lock;
>
> /* Per class runqueue modification mask; bits in class order. */

We should probably remove this comment as well along with queue_mask.

Thanks,
-Andrea

> - unsigned int queue_mask;
> unsigned int nr_running;
> #ifdef CONFIG_NUMA_BALANCING
> unsigned int nr_numa_running;
> @@ -1179,6 +1178,7 @@ struct rq {
> struct sched_dl_entity *dl_server;
> struct task_struct *idle;
> struct task_struct *stop;
> + const struct sched_class *next_class;
> unsigned long next_balance;
> struct mm_struct *prev_mm;
>