You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
2.8 KiB
131 lines
2.8 KiB
18 years ago
|
|
||
|
|
#include <linux/freezer.h>
|
||
|
|
#include <linux/kthread.h>
|
||
|
|
|
||
|
|
#include "edac_mc.h"
|
||
|
|
#include "edac_module.h"
|
||
|
|
|
||
|
|
#define EDAC_MC_VERSION "Ver: 2.0.3" __DATE__
|
||
|
|
|
||
|
|
#ifdef CONFIG_EDAC_DEBUG
|
||
|
|
/* Values of 0 to 4 will generate output */
|
||
|
|
int edac_debug_level = 1;
|
||
|
|
EXPORT_SYMBOL_GPL(edac_debug_level);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static struct task_struct *edac_thread;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check MC status every edac_get_poll_msec().
|
||
|
|
* Check PCI status every edac_get_poll_msec() as well.
|
||
|
|
*
|
||
|
|
* This where the work gets done for edac.
|
||
|
|
*
|
||
|
|
* SMP safe, doesn't use NMI, and auto-rate-limits.
|
||
|
|
*/
|
||
|
|
static void do_edac_check(void)
|
||
|
|
{
|
||
|
|
debugf3("%s()\n", __func__);
|
||
|
|
|
||
|
|
/* perform the poll activities */
|
||
|
|
edac_check_mc_devices();
|
||
|
|
edac_pci_do_parity_check();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Action thread for EDAC to perform the POLL operations
|
||
|
|
*/
|
||
|
|
static int edac_kernel_thread(void *arg)
|
||
|
|
{
|
||
|
|
int msec;
|
||
|
|
|
||
|
|
while (!kthread_should_stop()) {
|
||
|
|
|
||
|
|
do_edac_check();
|
||
|
|
|
||
|
|
/* goto sleep for the interval */
|
||
|
|
msec = (HZ * edac_get_poll_msec()) / 1000;
|
||
|
|
schedule_timeout_interruptible(msec);
|
||
|
|
try_to_freeze();
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* edac_init
|
||
|
|
* module initialization entry point
|
||
|
|
*/
|
||
|
|
static int __init edac_init(void)
|
||
|
|
{
|
||
|
|
edac_printk(KERN_INFO, EDAC_MC, EDAC_MC_VERSION "\n");
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Harvest and clear any boot/initialization PCI parity errors
|
||
|
|
*
|
||
|
|
* FIXME: This only clears errors logged by devices present at time of
|
||
|
|
* module initialization. We should also do an initial clear
|
||
|
|
* of each newly hotplugged device.
|
||
|
|
*/
|
||
|
|
edac_pci_clear_parity_errors();
|
||
|
|
|
||
|
|
/* Create the MC sysfs entries */
|
||
|
|
if (edac_sysfs_memctrl_setup()) {
|
||
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
||
|
|
"Error initializing sysfs code\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create the PCI parity sysfs entries */
|
||
|
|
if (edac_sysfs_pci_setup()) {
|
||
|
|
edac_sysfs_memctrl_teardown();
|
||
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
||
|
|
"PCI: Error initializing sysfs code\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* create our kernel thread */
|
||
|
|
edac_thread = kthread_run(edac_kernel_thread, NULL, "kedac");
|
||
|
|
|
||
|
|
if (IS_ERR(edac_thread)) {
|
||
|
|
/* remove the sysfs entries */
|
||
|
|
edac_sysfs_memctrl_teardown();
|
||
|
|
edac_sysfs_pci_teardown();
|
||
|
|
return PTR_ERR(edac_thread);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* edac_exit()
|
||
|
|
* module exit/termination function
|
||
|
|
*/
|
||
|
|
static void __exit edac_exit(void)
|
||
|
|
{
|
||
|
|
debugf0("%s()\n", __func__);
|
||
|
|
kthread_stop(edac_thread);
|
||
|
|
|
||
|
|
/* tear down the sysfs device */
|
||
|
|
edac_sysfs_memctrl_teardown();
|
||
|
|
edac_sysfs_pci_teardown();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Inform the kernel of our entry and exit points
|
||
|
|
*/
|
||
|
|
module_init(edac_init);
|
||
|
|
module_exit(edac_exit);
|
||
|
|
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_AUTHOR("Doug Thompson www.softwarebitmaker.com, et al");
|
||
|
|
MODULE_DESCRIPTION("Core library routines for EDAC reporting");
|
||
|
|
|
||
|
|
/* refer to *_sysfs.c files for parameters that are exported via sysfs */
|
||
|
|
|
||
|
|
#ifdef CONFIG_EDAC_DEBUG
|
||
|
|
module_param(edac_debug_level, int, 0644);
|
||
|
|
MODULE_PARM_DESC(edac_debug_level, "Debug level");
|
||
|
|
#endif
|
||
|
|
|