linux-kernel - Re: [PATCH sched_ext/for-6.14-fixes] sched_ext: selftests/dsp_local

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Message-ID: <Z5fUTUMVlbkvcvhs@slm.duckdns.org>
Date: Mon, 27 Jan 2025 08:45:33 -1000
From: Tejun Heo <tj@...nel.org>
To: Andrea Righi <arighi@...dia.com>
Cc: Ihor Solodrai <ihor.solodrai@...me>, sched-ext@...a.com,
	kernel-team@...a.com, linux-kernel@...r.kernel.org,
	bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH sched_ext/for-6.14-fixes] sched_ext:
 selftests/dsp_local_on: Fix sporadic failures

On Sat, Jan 25, 2025 at 05:54:23AM +0100, Andrea Righi wrote:
...
> > -	if (p->nr_cpus_allowed == nr_cpus)
> > +	if (p->nr_cpus_allowed == nr_cpus && !p->migration_disabled)
> 
> This doesn't work with !CONFIG_SMP, maybe we can introduce a helper like:
> 
> static bool is_migration_disabled(const struct task_struct *p)
> {
> 	if (bpf_core_field_exists(p->migration_disabled))
> 		return p->migration_disabled;
> 	return false;

Ah, right. Would you care to send the patch?

Thanks.

-- 
tejun