From: Robert Love <rml@tech9.net>
To: Akram.Abou-Emara@nokia.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: Kernel Threads question on 2.4
Date: 03 Feb 2003 19:59:30 -0500 [thread overview]
Message-ID: <1044320369.783.117.camel@phantasy> (raw)
In-Reply-To: <F0B628F30F48064289D8CCC1EE21B7A8026B2335@mvebe001.americas.nokia.com>
On Mon, 2003-02-03 at 19:52, Akram.Abou-Emara@nokia.com wrote:
These questions might be better asked on the kernelnewbies list...
> Do kernel threads get preempted? Or do they have to
> give up the CPU on their own?
Without the preemptive kernel, they are not preemptive. With
preempt-kernel, they are. They tend to run at elevated priorities
anyhow, so this is not so much of an issue.
> Are there any rules for what scheduling policies and
> priority a kernel thread can have?
> reparent_to_init()sets the scheduling policy to
> SCHED_OTHER. Do you see a problem with changing the
> scheduling policy to SCHED_FIFO?
kernel threads can have any scheduling policy or priority - they really
do not differ much from regular threads (sans the lack of address
space).
Some kernel threads do indeed run with real-time policy.
Robert Love
prev parent reply other threads:[~2003-02-04 0:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-04 0:52 Kernel Threads question on 2.4 Akram.Abou-Emara
2003-02-04 0:59 ` Robert Love [this message]
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