30e1f7a812
Move toplevel sysfs class to the stub and make it available to non-modularized code too. Add proper refcounting of its users and move the registration functionality into the reference counting routines. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
146 lines
3.0 KiB
C
146 lines
3.0 KiB
C
/*
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* edac_module.c
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*
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* (C) 2007 www.softwarebitmaker.com
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*
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* Author: Doug Thompson <dougthompson@xmission.com>
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*
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*/
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#include <linux/edac.h>
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#include "edac_core.h"
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#include "edac_module.h"
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#define EDAC_VERSION "Ver: 2.1.0 " __DATE__
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#ifdef CONFIG_EDAC_DEBUG
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/* Values of 0 to 4 will generate output */
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int edac_debug_level = 2;
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EXPORT_SYMBOL_GPL(edac_debug_level);
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#endif
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/* scope is to module level only */
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struct workqueue_struct *edac_workqueue;
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/*
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* edac_op_state_to_string()
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*/
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char *edac_op_state_to_string(int opstate)
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{
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if (opstate == OP_RUNNING_POLL)
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return "POLLED";
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else if (opstate == OP_RUNNING_INTERRUPT)
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return "INTERRUPT";
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else if (opstate == OP_RUNNING_POLL_INTR)
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return "POLL-INTR";
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else if (opstate == OP_ALLOC)
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return "ALLOC";
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else if (opstate == OP_OFFLINE)
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return "OFFLINE";
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return "UNKNOWN";
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}
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/*
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* edac_workqueue_setup
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* initialize the edac work queue for polling operations
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*/
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static int edac_workqueue_setup(void)
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{
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edac_workqueue = create_singlethread_workqueue("edac-poller");
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if (edac_workqueue == NULL)
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return -ENODEV;
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else
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return 0;
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}
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/*
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* edac_workqueue_teardown
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* teardown the edac workqueue
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*/
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static void edac_workqueue_teardown(void)
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{
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if (edac_workqueue) {
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flush_workqueue(edac_workqueue);
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destroy_workqueue(edac_workqueue);
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edac_workqueue = NULL;
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}
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}
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/*
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* edac_init
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* module initialization entry point
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*/
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static int __init edac_init(void)
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{
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int err = 0;
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edac_printk(KERN_INFO, EDAC_MC, EDAC_VERSION "\n");
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/*
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* Harvest and clear any boot/initialization PCI parity errors
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*
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* FIXME: This only clears errors logged by devices present at time of
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* module initialization. We should also do an initial clear
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* of each newly hotplugged device.
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*/
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edac_pci_clear_parity_errors();
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/*
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* now set up the mc_kset under the edac class object
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*/
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err = edac_sysfs_setup_mc_kset();
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if (err)
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goto error;
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/* Setup/Initialize the workq for this core */
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err = edac_workqueue_setup();
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if (err) {
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edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
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goto workq_fail;
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}
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return 0;
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/* Error teardown stack */
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workq_fail:
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edac_sysfs_teardown_mc_kset();
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error:
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return err;
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}
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/*
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* edac_exit()
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* module exit/termination function
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*/
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static void __exit edac_exit(void)
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{
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debugf0("%s()\n", __func__);
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/* tear down the various subsystems */
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edac_workqueue_teardown();
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edac_sysfs_teardown_mc_kset();
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}
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/*
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* Inform the kernel of our entry and exit points
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*/
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module_init(edac_init);
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module_exit(edac_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Doug Thompson www.softwarebitmaker.com, et al");
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MODULE_DESCRIPTION("Core library routines for EDAC reporting");
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/* refer to *_sysfs.c files for parameters that are exported via sysfs */
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#ifdef CONFIG_EDAC_DEBUG
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module_param(edac_debug_level, int, 0644);
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MODULE_PARM_DESC(edac_debug_level, "Debug level");
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#endif
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