linux/drivers/net/bonding/bond_debugfs.c

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#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include "bonding.h"
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/seq_file.h>
static struct dentry *bonding_debug_root;
void bond_debug_register(struct bonding *bond)
{
if (!bonding_debug_root)
return;
bond->debug_dir =
debugfs_create_dir(bond->dev->name, bonding_debug_root);
if (!bond->debug_dir) {
pr_warning("%s: Warning: failed to register to debugfs\n",
bond->dev->name);
return;
}
}
void bond_debug_unregister(struct bonding *bond)
{
if (!bonding_debug_root)
return;
debugfs_remove_recursive(bond->debug_dir);
}
void bond_debug_reregister(struct bonding *bond)
{
struct dentry *d;
if (!bonding_debug_root)
return;
d = debugfs_rename(bonding_debug_root, bond->debug_dir,
bonding_debug_root, bond->dev->name);
if (d) {
bond->debug_dir = d;
} else {
pr_warning("%s: Warning: failed to reregister, "
"so just unregister old one\n",
bond->dev->name);
bond_debug_unregister(bond);
}
}
void bond_create_debugfs(void)
{
bonding_debug_root = debugfs_create_dir("bonding", NULL);
if (!bonding_debug_root) {
pr_warning("Warning: Cannot create bonding directory"
" in debugfs\n");
}
}
void bond_destroy_debugfs(void)
{
debugfs_remove_recursive(bonding_debug_root);
bonding_debug_root = NULL;
}
#else /* !CONFIG_DEBUG_FS */
void bond_debug_register(struct bonding *bond)
{
}
void bond_debug_unregister(struct bonding *bond)
{
}
void bond_debug_reregister(struct bonding *bond)
{
}
void bond_create_debugfs(void)
{
}
void bond_destroy_debugfs(void)
{
}
#endif /* CONFIG_DEBUG_FS */