Re: [PATCH v12 07/13] task_isolation: add debug boot flag

[Peter Zijlstra]

On Tue, Apr 05, 2016 at 01:38:36PM -0400, Chris Metcalf wrote:
> +#ifdef CONFIG_TASK_ISOLATION
> +void task_isolation_debug(int cpu)
> +{
> +	struct task_struct *p;
> +
> +	if (!task_isolation_possible(cpu))
> +		return;
> +
> +	rcu_read_lock();
> +	p = cpu_curr(cpu);
> +	get_task_struct(p);
> +	rcu_read_unlock();
> +	task_isolation_debug_task(cpu, p);
> +	put_task_struct(p);


This is still broken...

Also, I really don't like how you sprinkle a call all over the core
kernel. At the very least make an inline fast path for this function to
avoid the call whenever possible.

> +}
> +#endif