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sysfs: new device attribute: registration_time

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Add a new sysfs attribute to dahdi_device: registration_time

* Records the time of the device's registration with DAHDI.
* Used by dahdi_auto_assign_compat to assign spans by device
  registration order when backward compatibility needed.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Shaun Ruffell <sruffell@digium.com>
This commit is contained in:
Oron Peled
2014-01-26 17:27:49 +02:00
committed by Tzafrir Cohen
parent 2c4373972b
commit 03b3ce1a10
3 changed files with 17 additions and 0 deletions
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2
drivers/dahdi/dahdi-base.c
View File

@@ -50,6 +50,7 @@
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/time.h>
#if defined(HAVE_UNLOCKED_IOCTL) && defined(CONFIG_BKL)
#include <linux/smp_lock.h>
@@ -7404,6 +7405,7 @@ static int _dahdi_register_device(struct dahdi_device *ddev,
__dahdi_init_span(s);
}
getnstimeofday(&ddev->registration_time);
ret = dahdi_sysfs_add_device(ddev, parent);
if (ret)
return ret;

14
drivers/dahdi/dahdi-sysfs.c
View File

@@ -677,6 +677,19 @@ dahdi_spantype_store(struct device *dev, struct device_attribute *attr,
return (ret < 0) ? ret : count;
}
static ssize_t
dahdi_registration_time_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dahdi_device *ddev = to_ddev(dev);
int count = 0;
count += sprintf(buf, "%010ld.%09ld\n",
ddev->registration_time.tv_sec,
ddev->registration_time.tv_nsec);
return count;
}
static struct device_attribute dahdi_device_attrs[] = {
__ATTR(manufacturer, S_IRUGO, dahdi_device_manufacturer_show, NULL),
__ATTR(type, S_IRUGO, dahdi_device_type_show, NULL),
@@ -688,6 +701,7 @@ static struct device_attribute dahdi_device_attrs[] = {
__ATTR(unassign_span, S_IWUSR, NULL, dahdi_device_unassign_span),
__ATTR(spantype, S_IWUSR | S_IRUGO, dahdi_spantype_show,
dahdi_spantype_store),
__ATTR(registration_time, S_IRUGO, dahdi_registration_time_show, NULL),
__ATTR_NULL,
};

1
include/dahdi/kernel.h
View File

@@ -941,6 +941,7 @@ struct dahdi_device {
const char *devicetype;
struct device dev;
unsigned int irqmisses;
struct timespec registration_time;
};
struct dahdi_span {