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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155// SPDX-License-Identifier: GPL-2.0-only
#include <linux/string_choices.h>
#include "edac_module.h"
static struct dentry *edac_debugfs;
static ssize_t edac_fake_inject_write(struct file *file, const char __user *data, size_t count, loff_t *ppos){ struct device *dev = file->private_data; struct mem_ctl_info *mci = to_mci(dev); static enum hw_event_mc_err_type type; u16 errcount = mci->fake_inject_count;
if (!errcount) errcount = 1;
type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED : HW_EVENT_ERR_CORRECTED;
printk(KERN_DEBUG "Generating %d %s fake error%s to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n", errcount, (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE", str_plural(errcount), mci->fake_inject_layer[0], mci->fake_inject_layer[1], mci->fake_inject_layer[2] ); edac_mc_handle_error(type, mci, errcount, 0, 0, 0, mci->fake_inject_layer[0], mci->fake_inject_layer[1], mci->fake_inject_layer[2], "FAKE ERROR", "for EDAC testing only");
return count;}
static const struct file_operations debug_fake_inject_fops = { .open = simple_open, .write = edac_fake_inject_write, .llseek = generic_file_llseek,};
void __init edac_debugfs_init(void){ edac_debugfs = debugfs_create_dir("edac", NULL);}
void edac_debugfs_exit(void){ debugfs_remove_recursive(edac_debugfs);}
void edac_create_debugfs_nodes(struct mem_ctl_info *mci){ struct dentry *parent; char name[80]; int i;
parent = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
for (i = 0; i < mci->n_layers; i++) { sprintf(name, "fake_inject_%s", edac_layer_name[mci->layers[i].type]); debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, &mci->fake_inject_layer[i]); }
debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, &mci->fake_inject_ue);
debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent, &mci->fake_inject_count);
debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev, &debug_fake_inject_fops);
mci->debugfs = parent;}
/* Create a toplevel dir under EDAC's debugfs hierarchy */struct dentry *edac_debugfs_create_dir(const char *dirname){ if (!edac_debugfs) return NULL;
return debugfs_create_dir(dirname, edac_debugfs);}EXPORT_SYMBOL_GPL(edac_debugfs_create_dir);
/* Create a toplevel dir under EDAC's debugfs hierarchy with parent @parent */struct dentry *edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent){ return debugfs_create_dir(dirname, parent);}EXPORT_SYMBOL_GPL(edac_debugfs_create_dir_at);
/* * Create a file under EDAC's hierarchy or a sub-hierarchy: * * @name: file name * @mode: file permissions * @parent: parent dentry. If NULL, it becomes the toplevel EDAC dir * @data: private data of caller * @fops: file operations of this file */struct dentry *edac_debugfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops){ if (!parent) parent = edac_debugfs;
return debugfs_create_file(name, mode, parent, data, fops);}EXPORT_SYMBOL_GPL(edac_debugfs_create_file);
/* Wrapper for debugfs_create_x8() */void edac_debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, u8 *value){ if (!parent) parent = edac_debugfs;
debugfs_create_x8(name, mode, parent, value);}EXPORT_SYMBOL_GPL(edac_debugfs_create_x8);
/* Wrapper for debugfs_create_x16() */void edac_debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, u16 *value){ if (!parent) parent = edac_debugfs;
debugfs_create_x16(name, mode, parent, value);}EXPORT_SYMBOL_GPL(edac_debugfs_create_x16);
/* Wrapper for debugfs_create_x32() */void edac_debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent, u32 *value){ if (!parent) parent = edac_debugfs;
debugfs_create_x32(name, mode, parent, value);}EXPORT_SYMBOL_GPL(edac_debugfs_create_x32);