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Message-ID: <3ae72650803202050y14cb890bjce643d933dec1cb5@mail.gmail.com>
Date: Fri, 21 Mar 2008 04:50:51 +0100
From: "Kay Sievers" <kay.sievers@...y.org>
To: "Rodolfo Giometti" <giometti@...ux.it>
Cc: linux-kernel@...r.kernel.org,
"Andrew Morton" <akpm@...ux-foundation.org>,
"David Woodhouse" <dwmw2@...radead.org>,
"Dave Jones" <davej@...hat.com>, "Sam Ravnborg" <sam@...nborg.org>,
"Greg KH" <greg@...ah.com>,
"Randy Dunlap" <randy.dunlap@...cle.com>
Subject: Re: [PATCH 1/7] LinuxPPS core support.
On Thu, Mar 6, 2008 at 1:09 PM, Rodolfo Giometti <giometti@...ux.it> wrote:
> This patch adds the kernel side of the PPS support currently named
> "LinuxPPS".
> diff --git a/include/linux/pps.h b/include/linux/pps.h
> new file mode 100644
> index 0000000..c455443
> --- /dev/null
> +++ b/include/linux/pps.h
> @@ -0,0 +1,204 @@
> +/* The main struct */
> +struct pps_device {
> + struct pps_source_info info; /* PSS source info */
> +
> + struct pps_kparams params; /* PPS's current params */
> +
> + __u32 assert_sequence; /* PPS' assert event seq # */
> + __u32 clear_sequence; /* PPS' clear event seq # */
> + struct pps_ktime assert_tu;
> + struct pps_ktime clear_tu;
> + int current_mode; /* PPS mode at event time */
> +
> + int go; /* PPS event is arrived? */
> + wait_queue_head_t queue; /* PPS event queue */
> +
> + unsigned int id; /* PPS source unique ID */
> + struct cdev cdev;
> + struct device *dev;
> + int devno;
> + struct fasync_struct *async_queue; /* fasync method */
> + spinlock_t lock;
> +
> + atomic_t usage; /* usage count */
> + wait_queue_head_t usage_queue;
> +
> + struct class class_dev;
Why is an entire class embedded into every device? :)
Kay
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