Re: deterministic usage of JIFFIES and how to relocate the clock

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: jkraehemann-guest@users.alioth.debian.org
Cc: linux-rt-users@vger.kernel.org
Subject: Re: deterministic usage of JIFFIES and how to relocate the clock
Date: Thu, 4 Feb 2016 17:44:11 +0100	[thread overview]
Message-ID: <20160204164411.GC3381@linutronix.de> (raw)
In-Reply-To: <CA+Owze7+=vMDaqX25OVQ6ZrRgGj9j2BZjEZt_GyG+9+6+6ELWA@mail.gmail.com>

* Joël Krähemann | 2016-01-24 09:40:33 [+0100]:

>Hi
Hi,

>At my opinion I was thinking at a lower level than needed. The
I couldn't parse the question in the previous mail.

>application runs at least aside the kernel.

aside the kernel? Like one CPU is for the kernel and the other for the
application?

>Probably I want to control PC (program counter) and redeclare the
>longjump function as macro. To gain control
>over throughput rate and thus being able to grain loading and unloading thread.

maybe. But I still fail to understand what you attempt to do.

>int sched_setaffinity(pid_t pid, size_t cpusetsize,
>                             const cpu_set_t *mask);

This one says which CPUs the task may run on.

>void longjmp(jmp_buf env, int val);

and this is unrelated to the previous one.

>
>cheers,
>Joël

Sebastian
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