51990e8254
For files that are actively using linux/device.h, make sure that they call it out. This will allow us to clean up some of the implicit uses of linux/device.h within include/* without introducing build regressions. Yes, this was created by "cheating" -- i.e. the headers were cleaned up, and then the fallout was found and fixed, and then the two commits were reordered. This ensures we don't introduce build regressions into the git history. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
|
|
* common EDAC components that must be in kernel
|
|
*
|
|
* Author: Dave Jiang <djiang@mvista.com>
|
|
*
|
|
* 2007 (c) MontaVista Software, Inc.
|
|
* 2010 (c) Advanced Micro Devices Inc.
|
|
* Borislav Petkov <borislav.petkov@amd.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/edac.h>
|
|
#include <linux/atomic.h>
|
|
#include <linux/device.h>
|
|
#include <asm/edac.h>
|
|
|
|
int edac_op_state = EDAC_OPSTATE_INVAL;
|
|
EXPORT_SYMBOL_GPL(edac_op_state);
|
|
|
|
atomic_t edac_handlers = ATOMIC_INIT(0);
|
|
EXPORT_SYMBOL_GPL(edac_handlers);
|
|
|
|
int edac_err_assert = 0;
|
|
EXPORT_SYMBOL_GPL(edac_err_assert);
|
|
|
|
static atomic_t edac_subsys_valid = ATOMIC_INIT(0);
|
|
|
|
/*
|
|
* called to determine if there is an EDAC driver interested in
|
|
* knowing an event (such as NMI) occurred
|
|
*/
|
|
int edac_handler_set(void)
|
|
{
|
|
if (edac_op_state == EDAC_OPSTATE_POLL)
|
|
return 0;
|
|
|
|
return atomic_read(&edac_handlers);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_handler_set);
|
|
|
|
/*
|
|
* handler for NMI type of interrupts to assert error
|
|
*/
|
|
void edac_atomic_assert_error(void)
|
|
{
|
|
edac_err_assert++;
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_atomic_assert_error);
|
|
|
|
/*
|
|
* sysfs object: /sys/devices/system/edac
|
|
* need to export to other files
|
|
*/
|
|
struct bus_type edac_subsys = {
|
|
.name = "edac",
|
|
.dev_name = "edac",
|
|
};
|
|
EXPORT_SYMBOL_GPL(edac_subsys);
|
|
|
|
/* return pointer to the 'edac' node in sysfs */
|
|
struct bus_type *edac_get_sysfs_subsys(void)
|
|
{
|
|
int err = 0;
|
|
|
|
if (atomic_read(&edac_subsys_valid))
|
|
goto out;
|
|
|
|
/* create the /sys/devices/system/edac directory */
|
|
err = subsys_system_register(&edac_subsys, NULL);
|
|
if (err) {
|
|
printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n");
|
|
return NULL;
|
|
}
|
|
|
|
out:
|
|
atomic_inc(&edac_subsys_valid);
|
|
return &edac_subsys;
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_get_sysfs_subsys);
|
|
|
|
void edac_put_sysfs_subsys(void)
|
|
{
|
|
/* last user unregisters it */
|
|
if (atomic_dec_and_test(&edac_subsys_valid))
|
|
bus_unregister(&edac_subsys);
|
|
}
|
|
EXPORT_SYMBOL_GPL(edac_put_sysfs_subsys);
|