projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6d7d7433 HY |
1 | /* |
| 2 | * Architecture specific debugfs files | |
| 3 | * | |
| 4 | * Copyright (C) 2007, Intel Corp. | |
| 5 | * Huang Ying <ying.huang@intel.com> | |
| 6 | * | |
| 7 | * This file is released under the GPLv2. | |
| 8 | */ | |
| 9 | ||
| 10 | #include <linux/debugfs.h> | |
| 11 | #include <linux/stat.h> | |
| 12 | #include <linux/init.h> | |
| 13 | ||
| 14 | #include <asm/setup.h> | |
| 15 | ||
| 16 | #ifdef CONFIG_DEBUG_BOOT_PARAMS | |
| 17 | static struct debugfs_blob_wrapper boot_params_blob = { | |
| 18 | .data = &boot_params, | |
| 19 | .size = sizeof(boot_params), | |
| 20 | }; | |
| 21 | ||
| 22 | static int __init boot_params_kdebugfs_init(void) | |
| 23 | { | |
| 24 | int error; | |
| 25 | struct dentry *dbp, *version, *data; | |
| 26 | ||
| 27 | dbp = debugfs_create_dir("boot_params", NULL); | |
| 28 | if (!dbp) { | |
| 29 | error = -ENOMEM; | |
| 30 | goto err_return; | |
| 31 | } | |
| 32 | version = debugfs_create_x16("version", S_IRUGO, dbp, | |
| 33 | &boot_params.hdr.version); | |
| 34 | if (!version) { | |
| 35 | error = -ENOMEM; | |
| 36 | goto err_dir; | |
| 37 | } | |
| 38 | data = debugfs_create_blob("data", S_IRUGO, dbp, | |
| 39 | &boot_params_blob); | |
| 40 | if (!data) { | |
| 41 | error = -ENOMEM; | |
| 42 | goto err_version; | |
| 43 | } | |
| 44 | return 0; | |
| 45 | err_version: | |
| 46 | debugfs_remove(version); | |
| 47 | err_dir: | |
| 48 | debugfs_remove(dbp); | |
| 49 | err_return: | |
| 50 | return error; | |
| 51 | } | |
| 52 | #endif | |
| 53 | ||
| 54 | static int __init arch_kdebugfs_init(void) | |
| 55 | { | |
| 56 | int error = 0; | |
| 57 | ||
| 58 | #ifdef CONFIG_DEBUG_BOOT_PARAMS | |
| 59 | error = boot_params_kdebugfs_init(); | |
| 60 | #endif | |
| 61 | ||
| 62 | return error; | |
| 63 | } | |
| 64 | ||
| 65 | arch_initcall(arch_kdebugfs_init); |