From: Steven Rostedt <rostedt@goodmis.org>
To: lab liscs <liscs.lab@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Is it a process?
Date: Fri, 05 Aug 2005 11:17:39 -0400 [thread overview]
Message-ID: <1123255059.18332.54.camel@localhost.localdomain> (raw)
In-Reply-To: <1132fcd6050805060216a03fb6@mail.gmail.com>
On Fri, 2005-08-05 at 21:02 +0800, lab liscs wrote:
> when linux kernel receives a packet from the netcard and the forwards it .
>
> the process can be viewed as a kernel process ?
>
> and if this process can be interrupted ?
>
> thanks a lot!!
When a packet is received from the kernel, this is first done by an
interrupt handler to just get the packet. Then the rest (forwarding) is
done by a tasklet. This tasklet can be run either by the softirqd (a
kernel thread) or at certain locations in the kernel. So this is not a
normal process and no it can not be preempted or scheduled out (it can
be interrupted by an interrupt though).
-- Steve
next prev parent reply other threads:[~2005-08-05 15:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-05 13:02 Is it a process? lab liscs
2005-08-05 15:17 ` Steven Rostedt [this message]
2005-08-08 6:39 ` Jan Engelhardt
2005-08-08 13:25 ` Steven Rostedt
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