linux-kernel - Re: [patch 7/8] process filtering for fault-injection capabilities

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Date:	Tue, 19 Sep 2006 10:38:30 -0700
From:	Don Mullis <dwm@...r.net>
To:	Akinobu Mita <mita@...aclelinux.com>
Cc:	linux-kernel@...r.kernel.org, ak@...e.de, akpm@...l.org
Subject: Re: [patch 7/8] process filtering for fault-injection capabilities

On Tue, 2006-09-19 at 17:05 +0800, Akinobu Mita wrote:
> On Mon, Sep 18, 2006 at 10:54:51PM -0700, Don Mullis wrote:
> > Add functionality to the process_filter variable: A negative argument
> > injects failures for only for pid==-process_filter, thereby permitting
> > per-process failures from boot time.
> > 
> 
> Is it better to add new filter for this purpose?
> Because someone may want to filter by tgid instead of pid.
> 
> - positive value is for task->pid
> - nevative value is for task->tgid

Your idea sounds good to me.

> > Add printk, called upon each failure injection.
> > 
> 
> This printk() will be very useful. But it is better to make
> configurable, and the pid is not reliable in interrupt context.

Okay.  We do need some output now, for testing.


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