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Subject: Re: [RFC][PATCH 02/22] sched: add extended scheduling interface
From: Peter Zijlstra <peterz@infradead.org>
To: Raistlin <raistlin@linux.it>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
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Date: Wed, 10 Nov 2010 18:28:34 +0100
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On Fri, 2010-10-29 at 08:27 +0200, Raistlin wrote:
> +struct sched_param_ex {
> +       int sched_priority;
> +       struct timespec sched_runtime;
> +       struct timespec sched_deadline;
> +       struct timespec sched_period;
> +       unsigned int sched_flags;
> +
> +       struct timespec curr_runtime;
> +       struct timespec used_runtime;
> +       struct timespec curr_deadline;
> +}; 

It would be better for alignment reasons to move the sched_flags field
next to the sched_priority field.

I would suggest we add at least one more field so we can implement the
stochastic model from UNC, sched_runtime_dev or sched_runtime_var or
somesuch.