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xen: clean up xenbus internal headers

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The xenbus driver has an awful mixture of internally and globally
visible headers: some of the internally used only stuff is defined in
the global header include/xen/xenbus.h while some stuff defined in
internal headers is used by other drivers, too.

Clean this up by moving the externally used symbols to
include/xen/xenbus.h and the symbols used internally only to a new
header drivers/xen/xenbus/xenbus.h replacing xenbus_comms.h and
xenbus_probe.h

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Juergen Gross 2017-02-09 14:39:56 +01:00 committed by Boris Ostrovsky
parent c0d197d55e
commit 332f791dc9
13 changed files with 52 additions and 100 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/xen/xenbus/xenbus_probe.h → drivers/xen/xenbus/xenbus.h
View File

@ -1,7 +1,5 @@
/******************************************************************************
* xenbus_probe.h
*
* Talks to Xen Store to figure out what devices we have.
/*
* Private include for xenbus communications.
*
* Copyright (C) 2005 Rusty Russell, IBM Corporation
* Copyright (C) 2005 XenSource Ltd.
@ -31,8 +29,8 @@
* IN THE SOFTWARE.
*/
#ifndef _XENBUS_PROBE_H
#define _XENBUS_PROBE_H
#ifndef _XENBUS_XENBUS_H
#define _XENBUS_XENBUS_H
#define XEN_BUS_ID_SIZE 20
@ -54,35 +52,46 @@ enum xenstore_init {
XS_LOCAL,
};
extern enum xenstore_init xen_store_domain_type;
extern const struct attribute_group *xenbus_dev_groups[];
extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
extern int xenbus_dev_probe(struct device *_dev);
extern int xenbus_dev_remove(struct device *_dev);
extern int xenbus_register_driver_common(struct xenbus_driver *drv,
struct xen_bus_type *bus,
struct module *owner,
const char *mod_name);
extern int xenbus_probe_node(struct xen_bus_type *bus,
const char *type,
const char *nodename);
extern int xenbus_probe_devices(struct xen_bus_type *bus);
int xs_init(void);
int xb_init_comms(void);
void xb_deinit_comms(void);
int xb_write(const void *data, unsigned int len);
int xb_read(void *data, unsigned int len);
int xb_data_to_read(void);
int xb_wait_for_data_to_read(void);
extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
int xenbus_match(struct device *_dev, struct device_driver *_drv);
int xenbus_dev_probe(struct device *_dev);
int xenbus_dev_remove(struct device *_dev);
int xenbus_register_driver_common(struct xenbus_driver *drv,
struct xen_bus_type *bus,
struct module *owner,
const char *mod_name);
int xenbus_probe_node(struct xen_bus_type *bus,
const char *type,
const char *nodename);
int xenbus_probe_devices(struct xen_bus_type *bus);
extern void xenbus_dev_shutdown(struct device *_dev);
void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
extern int xenbus_dev_suspend(struct device *dev);
extern int xenbus_dev_resume(struct device *dev);
extern int xenbus_dev_cancel(struct device *dev);
void xenbus_dev_shutdown(struct device *_dev);
extern void xenbus_otherend_changed(struct xenbus_watch *watch,
const char **vec, unsigned int len,
int ignore_on_shutdown);
int xenbus_dev_suspend(struct device *dev);
int xenbus_dev_resume(struct device *dev);
int xenbus_dev_cancel(struct device *dev);
extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
char *id_node, char *path_node);
void xenbus_otherend_changed(struct xenbus_watch *watch,
const char **vec, unsigned int len,
int ignore_on_shutdown);
int xenbus_read_otherend_details(struct xenbus_device *xendev,
char *id_node, char *path_node);
void xenbus_ring_ops_init(void);
void *xenbus_dev_request_and_reply(struct xsd_sockmsg *msg);
#endif

2
drivers/xen/xenbus/xenbus_client.c
View File

@ -47,7 +47,7 @@
#include <xen/xen.h>
#include <xen/features.h>
#include "xenbus_probe.h"
#include "xenbus.h"
#define XENBUS_PAGES(_grants) (DIV_ROUND_UP(_grants, XEN_PFN_PER_PAGE))

2
drivers/xen/xenbus/xenbus_comms.c
View File

@ -40,7 +40,7 @@
#include <asm/xen/hypervisor.h>
#include <xen/events.h>
#include <xen/page.h>
#include "xenbus_comms.h"
#include "xenbus.h"
static int xenbus_irq;

51
drivers/xen/xenbus/xenbus_comms.h
View File

@ -1,51 +0,0 @@
/*
* Private include for xenbus communications.
*
* Copyright (C) 2005 Rusty Russell, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation; or, when distributed
* separately from the Linux kernel or incorporated into other
* software packages, subject to the following license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this source file (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef _XENBUS_COMMS_H
#define _XENBUS_COMMS_H
#include <linux/fs.h>
int xs_init(void);
int xb_init_comms(void);
void xb_deinit_comms(void);
/* Low level routines. */
int xb_write(const void *data, unsigned len);
int xb_read(void *data, unsigned len);
int xb_data_to_read(void);
int xb_wait_for_data_to_read(void);
extern struct xenstore_domain_interface *xen_store_interface;
extern int xen_store_evtchn;
extern enum xenstore_init xen_store_domain_type;
extern const struct file_operations xen_xenbus_fops;
#endif /* _XENBUS_COMMS_H */

2
drivers/xen/xenbus/xenbus_dev_backend.c
View File

@ -16,7 +16,7 @@
#include <xen/events.h>
#include <asm/xen/hypervisor.h>
#include "xenbus_comms.h"
#include "xenbus.h"
static int xenbus_backend_open(struct inode *inode, struct file *filp)
{

4
drivers/xen/xenbus/xenbus_dev_frontend.c
View File

@ -57,12 +57,12 @@
#include <linux/miscdevice.h>
#include <linux/init.h>
#include "xenbus_comms.h"
#include <xen/xenbus.h>
#include <xen/xen.h>
#include <asm/xen/hypervisor.h>
#include "xenbus.h"
/*
* An element of a list of outstanding transactions, for which we're
* still waiting a reply.

3
drivers/xen/xenbus/xenbus_probe.c
View File

@ -62,8 +62,7 @@
#include <xen/hvm.h>
#include "xenbus_comms.h"
#include "xenbus_probe.h"
#include "xenbus.h"
int xen_store_evtchn;

3
drivers/xen/xenbus/xenbus_probe_backend.c
View File

@ -53,8 +53,7 @@
#include <xen/xenbus.h>
#include <xen/features.h>
#include "xenbus_comms.h"
#include "xenbus_probe.h"
#include "xenbus.h"
/* backend/<type>/<fe-uuid>/<id> => <type>-<fe-domid>-<id> */
static int backend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)

3
drivers/xen/xenbus/xenbus_probe_frontend.c
View File

@ -27,8 +27,7 @@
#include <xen/platform_pci.h>
#include "xenbus_comms.h"
#include "xenbus_probe.h"
#include "xenbus.h"

3
drivers/xen/xenbus/xenbus_xs.c
View File

@ -48,8 +48,7 @@
#include <asm/xen/hypervisor.h>
#include <xen/xenbus.h>
#include <xen/xen.h>
#include "xenbus_comms.h"
#include "xenbus_probe.h"
#include "xenbus.h"
struct xs_stored_msg {
struct list_head list;

2
drivers/xen/xenfs/super.c
View File

@ -16,10 +16,10 @@
#include <linux/magic.h>
#include <xen/xen.h>
#include <xen/xenbus.h>
#include "xenfs.h"
#include "../privcmd.h"
#include "../xenbus/xenbus_comms.h"
#include <asm/xen/hypervisor.h>

2
drivers/xen/xenfs/xenstored.c
View File

@ -4,9 +4,9 @@
#include <linux/fs.h>
#include <xen/page.h>
#include <xen/xenbus.h>
#include "xenfs.h"
#include "../xenbus/xenbus_comms.h"
static ssize_t xsd_read(struct file *file, char __user *buf,
size_t size, loff_t *off)

12
include/xen/xenbus.h
View File

@ -38,6 +38,7 @@
#include <linux/notifier.h>
#include <linux/mutex.h>
#include <linux/export.h>
#include <linux/fs.h>
#include <linux/completion.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -175,16 +176,9 @@ void xs_suspend(void);
void xs_resume(void);
void xs_suspend_cancel(void);
/* Used by xenbus_dev to borrow kernel's store connection. */
void *xenbus_dev_request_and_reply(struct xsd_sockmsg *msg);
struct work_struct;
/* Prepare for domain suspend: then resume or cancel the suspend. */
void xenbus_suspend(void);
void xenbus_resume(void);
void xenbus_probe(struct work_struct *);
void xenbus_suspend_cancel(void);
#define XENBUS_IS_ERR_READ(str) ({ \
if (!IS_ERR(str) && strlen(str) == 0) { \
@ -235,4 +229,8 @@ const char *xenbus_strstate(enum xenbus_state state);
int xenbus_dev_is_online(struct xenbus_device *dev);
int xenbus_frontend_closed(struct xenbus_device *dev);
extern const struct file_operations xen_xenbus_fops;
extern struct xenstore_domain_interface *xen_store_interface;
extern int xen_store_evtchn;
#endif /* _XEN_XENBUS_H */