Re: [PATCH V5 1/6] Sched: Scheduler time slice extension

[Prakash Sangappa <prakash.sangappa@oracle.com>]

> On Jun 4, 2025, at 7:31 AM, Steven Rostedt <rostedt@goodmis.org> wrote:
> 
> On Tue,  3 Jun 2025 23:36:49 +0000
> Prakash Sangappa <prakash.sangappa@oracle.com> wrote:
> 
>> @@ -2249,6 +2251,20 @@ static inline bool owner_on_cpu(struct task_struct *owner)
>> unsigned long sched_cpu_util(int cpu);
>> #endif /* CONFIG_SMP */
>> 
>> +#ifdef CONFIG_RSEQ
>> +
>> +extern bool rseq_delay_resched(void);
>> +extern void rseq_delay_resched_fini(void);
>> +extern void rseq_delay_resched_tick(void);
>> +
>> +#else
>> +
>> +static inline bool rseq_delay_resched(void) { return false; }
>> +static inline void rseq_delay_resched_fini(void) { }
>> +static inline void rseq_delay_resched_tick(void) { }
>> +
>> +#endif
>> +
> 
> Can we add a config to make this optional. I don't want to allow any task
> to have an extended timeslice over RT tasks regardless of how small the
> delay is.

Are you suggesting including a CONFIG to enable this feature or
to choose to be applicable to PREEMPT_LAZY task only?


> 
> -- Steve