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OpenCloudOS-Kernel
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OpenCloudOS-Kernel/include/linux/attribute_container.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* class_container.h - a generic container for all classes
*
* Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
*
* This file is licensed under GPLv2
*/
#ifndef _ATTRIBUTE_CONTAINER_H_
#define _ATTRIBUTE_CONTAINER_H_
#include <linux/device.h>
#include <linux/list.h>
[SCSI] correct attribute_container list usage One of the changes in the attribute_container code in the scsi-misc tree was to add a lock to protect the list of devices per container. This, unfortunately, leads to potential scheduling while atomic problems if there's a sleep in the function called by a trigger. The correct solution is to use the kernel klist infrastructure instead which allows lockless traversal of a list. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-22 23:06:19 +08:00
#include <linux/klist.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct attribute_container {
struct list_head node;
[SCSI] correct attribute_container list usage One of the changes in the attribute_container code in the scsi-misc tree was to add a lock to protect the list of devices per container. This, unfortunately, leads to potential scheduling while atomic problems if there's a sleep in the function called by a trigger. The correct solution is to use the kernel klist infrastructure instead which allows lockless traversal of a list. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-22 23:06:19 +08:00
struct klist containers;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct class *class;
struct class_device_attribute **attrs;
int (*match)(struct attribute_container *, struct device *);
#define ATTRIBUTE_CONTAINER_NO_CLASSDEVS 0x01
unsigned long flags;
};
static inline int
attribute_container_no_classdevs(struct attribute_container *atc)
{
return atc->flags & ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
}
static inline void
attribute_container_set_no_classdevs(struct attribute_container *atc)
{
atc->flags |= ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
}
int attribute_container_register(struct attribute_container *cont);
int attribute_container_unregister(struct attribute_container *cont);
void attribute_container_create_device(struct device *dev,
int (*fn)(struct attribute_container *,
struct device *,
struct class_device *));
void attribute_container_add_device(struct device *dev,
int (*fn)(struct attribute_container *,
struct device *,
struct class_device *));
void attribute_container_remove_device(struct device *dev,
void (*fn)(struct attribute_container *,
struct device *,
struct class_device *));
void attribute_container_device_trigger(struct device *dev,
int (*fn)(struct attribute_container *,
struct device *,
struct class_device *));
void attribute_container_trigger(struct device *dev,
int (*fn)(struct attribute_container *,
struct device *));
int attribute_container_add_attrs(struct class_device *classdev);
int attribute_container_add_class_device(struct class_device *classdev);
int attribute_container_add_class_device_adapter(struct attribute_container *cont,
struct device *dev,
struct class_device *classdev);
void attribute_container_remove_attrs(struct class_device *classdev);
void attribute_container_class_device_del(struct class_device *classdev);
[SCSI] add missing attribute container function prototype attribute_container_classdev_to_container is an exported function of the attribute_container.c file. However, there's no prototype for it. Now I actually want to use it, so add one. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-17 06:26:10 +08:00
struct attribute_container *attribute_container_classdev_to_container(struct class_device *);
[SCSI] correct transport class abstraction to work outside SCSI I recently tried to construct a totally generic transport class and found there were certain features missing from the current abstract transport class. Most notable is that you have to hang the data on the class_device but most of the API is framed in terms of the generic device, not the class_device. These changes are two fold - Provide the class_device to all of the setup and configure APIs - Provide and extra API to take the device and the attribute class and return the corresponding class_device Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-15 06:09:01 +08:00
struct class_device *attribute_container_find_class_device(struct attribute_container *, struct device *);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct class_device_attribute **attribute_container_classdev_to_attrs(const struct class_device *classdev);
#endif