cregit-Linux how code gets into the kernel

Release 4.11 drivers/edac/debugfs.c

Directory: drivers/edac
#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", errcount > 1 ? "s" : "", 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; }

Contributors

PersonTokensPropCommitsCommitProp
Borislav Petkov164100.00%1100.00%
Total164100.00%1100.00%

static const struct file_operations debug_fake_inject_fops = { .open = simple_open, .write = edac_fake_inject_write, .llseek = generic_file_llseek, };
int __init edac_debugfs_init(void) { edac_debugfs = debugfs_create_dir("edac", NULL); if (IS_ERR(edac_debugfs)) { edac_debugfs = NULL; return -ENOMEM; } return 0; }

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PersonTokensPropCommitsCommitProp
Borislav Petkov37100.00%1100.00%
Total37100.00%1100.00%


void edac_debugfs_exit(void) { debugfs_remove_recursive(edac_debugfs); }

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PersonTokensPropCommitsCommitProp
Borislav Petkov1191.67%150.00%
Thor Thayer18.33%150.00%
Total12100.00%2100.00%


int edac_create_debugfs_nodes(struct mem_ctl_info *mci) { struct dentry *d, *parent; char name[80]; int i; if (!edac_debugfs) return -ENODEV; d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs); if (!d) return -ENOMEM; parent = d; for (i = 0; i < mci->n_layers; i++) { sprintf(name, "fake_inject_%s", edac_layer_name[mci->layers[i].type]); d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, &mci->fake_inject_layer[i]); if (!d) goto nomem; } d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, &mci->fake_inject_ue); if (!d) goto nomem; d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent, &mci->fake_inject_count); if (!d) goto nomem; d = debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev, &debug_fake_inject_fops); if (!d) goto nomem; mci->debugfs = parent; return 0; nomem: edac_debugfs_remove_recursive(mci->debugfs); return -ENOMEM; }

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PersonTokensPropCommitsCommitProp
Borislav Petkov22999.57%150.00%
Tan Xiaojun10.43%150.00%
Total230100.00%2100.00%

/* 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); }

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Borislav Petkov28100.00%1100.00%
Total28100.00%1100.00%

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); }

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PersonTokensPropCommitsCommitProp
Borislav Petkov25100.00%1100.00%
Total25100.00%1100.00%

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); }

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PersonTokensPropCommitsCommitProp
Borislav Petkov53100.00%1100.00%
Total53100.00%1100.00%

EXPORT_SYMBOL_GPL(edac_debugfs_create_file); /* Wrapper for debugfs_create_x8() */
struct dentry *edac_debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, u8 *value) { if (!parent) parent = edac_debugfs; return debugfs_create_x8(name, mode, parent, value); }

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PersonTokensPropCommitsCommitProp
Borislav Petkov45100.00%1100.00%
Total45100.00%1100.00%

EXPORT_SYMBOL_GPL(edac_debugfs_create_x8); /* Wrapper for debugfs_create_x16() */
struct dentry *edac_debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, u16 *value) { if (!parent) parent = edac_debugfs; return debugfs_create_x16(name, mode, parent, value); }

Contributors

PersonTokensPropCommitsCommitProp
Borislav Petkov45100.00%1100.00%
Total45100.00%1100.00%

EXPORT_SYMBOL_GPL(edac_debugfs_create_x16);

Overall Contributors

PersonTokensPropCommitsCommitProp
Borislav Petkov69999.71%250.00%
Tan Xiaojun10.14%125.00%
Thor Thayer10.14%125.00%
Total701100.00%4100.00%
Directory: drivers/edac
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