kernel-ark/arch/x86/kernel/kdebugfs.c

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/*
* Architecture specific debugfs files
*
* Copyright (C) 2007, Intel Corp.
* Huang Ying <ying.huang@intel.com>
*
* This file is released under the GPLv2.
*/
#include <linux/debugfs.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <asm/setup.h>
#ifdef CONFIG_DEBUG_BOOT_PARAMS
static struct debugfs_blob_wrapper boot_params_blob = {
.data = &boot_params,
.size = sizeof(boot_params),
};
static int __init boot_params_kdebugfs_init(void)
{
int error;
struct dentry *dbp, *version, *data;
dbp = debugfs_create_dir("boot_params", NULL);
if (!dbp) {
error = -ENOMEM;
goto err_return;
}
version = debugfs_create_x16("version", S_IRUGO, dbp,
&boot_params.hdr.version);
if (!version) {
error = -ENOMEM;
goto err_dir;
}
data = debugfs_create_blob("data", S_IRUGO, dbp,
&boot_params_blob);
if (!data) {
error = -ENOMEM;
goto err_version;
}
return 0;
err_version:
debugfs_remove(version);
err_dir:
debugfs_remove(dbp);
err_return:
return error;
}
#endif
static int __init arch_kdebugfs_init(void)
{
int error = 0;
#ifdef CONFIG_DEBUG_BOOT_PARAMS
error = boot_params_kdebugfs_init();
#endif
return error;
}
arch_initcall(arch_kdebugfs_init);