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Date: Sun, 25 Oct 2015 06:41:45 -0400
From: "Theodore Ts'o" <tytso@mit.edu>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Tejun Heo <tj@kernel.org>,
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Subject: Re: [PATCH 3/3] sched: Implement interface for cgroup unified
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On Sun, Oct 25, 2015 at 10:33:32AM +0100, Ingo Molnar wrote:
> 
> Hm, that's weird - all our sched_*() system call APIs that set task scheduling 
> priorities are fundamentally per thread, not per process. Same goes for the old 
> sys_nice() interface. The scheduler has no real notion of 'process', and certainly 
> not at the system call level.
>

I suspect the main issue is that the games programmers were trying to
access it via libc / pthreads, which hides a lot of the power
available at the raw syscall level.  This is probably more of a
"tutorial needed for userspace programmers" issue, at a guess.

	  	     	       		    	   - Ted