[PATCH][2.6.0-test3] i386 cpuid.c devfs support 2/2

[Andrey Borzenkov]

the same question about default permissions as for msr.c; the same problem 
with module unload.

-andrey--- linux-2.6.0-test3-smp/arch/i386/kernel/cpuid.c.devfs	2003-05-05 03:52:48.000000000 +0400
+++ linux-2.6.0-test3-smp/arch/i386/kernel/cpuid.c	2003-08-09 22:30:39.000000000 +0400
@@ -39,6 +39,8 @@
 #include <linux/smp_lock.h>
 #include <linux/fs.h>
 
+#include <linux/devfs_fs_kernel.h>
+
 #include <asm/processor.h>
 #include <asm/msr.h>
 #include <asm/uaccess.h>
@@ -156,17 +158,27 @@ static struct file_operations cpuid_fops
 
 int __init cpuid_init(void)
 {
+  int i;
+
   if (register_chrdev(CPUID_MAJOR, "cpu/cpuid", &cpuid_fops)) {
     printk(KERN_ERR "cpuid: unable to get major %d for cpuid\n",
 	   CPUID_MAJOR);
     return -EBUSY;
   }
 
+  for (i = 0; i < NR_CPUS; i++)
+    devfs_mk_cdev(MKDEV(CPUID_MAJOR, i), S_IFCHR | S_IRUGO, "cpu/%d/cpuid", i);
+
   return 0;
 }
 
 void __exit cpuid_exit(void)
 {
+  int i;
+
+  for (i = 0; i < NR_CPUS; i++)
+    devfs_remove("cpu/%d/cpuid", i);
+
   unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
 }