usb kthreads

Hi,


Here is an aesthetic patch to change the usb kernel processes to threads,
this hides them from the usual 'ps' output. Please test and review.

 1290  ??  DL     0:00.00 [usbus0]
 [lots and lots more...]
 1309  ??  DL     0:00.00 [usbus4]

After the patch they can be seen as kernel threads.

  PID    TID COMM             TDNAME           CPU  PRI STATE   WCHAN    
    0 100000 kernel           swapper            0   68 sleep   sched     
    0 100009 kernel           firmware taskq     0   92 sleep   -         
    0 100020 kernel           kqueue taskq       0   92 sleep   -         
    0 100021 kernel           acpi_task_0        0   92 sleep   -         
    0 100022 kernel           acpi_task_1        0   92 sleep   -         
    0 100023 kernel           acpi_task_2        0   92 sleep   -         
    0 100027 kernel           thread taskq       0   92 sleep   -         
    0 100031 kernel           bwi0 taskq         0   16 sleep   -         
    0 100032 kernel           bwi0 taskq         0   16 sleep   -         
    0 100106 kernel           usbus0             0   20 sleep   wmsg      
    0 100107 kernel           usbus0             0   16 sleep   wmsg      
    0 100108 kernel           usbus0             0   20 sleep   wmsg      
    0 100109 kernel           usbus0             0   20 sleep   wmsg      
    [ ... ]
    0 100127 kernel           usbus4             0   20 sleep   wmsg      


Andrew



Index: dev/usb/usb_process.c
===================================================================
--- dev/usb/usb_process.c	(revision 196086)
+++ dev/usb/usb_process.c	(working copy)
_at__at_ -64,9 +64,9 _at__at_
 
 #if (__FreeBSD_version >= 800000)
 #define	USB_THREAD_CREATE(f, s, p, ...) \
-		kproc_create((f), (s), (p), RFHIGHPID, 0, __VA_ARGS__)
-#define	USB_THREAD_SUSPEND(p)   kproc_suspend(p,0)
-#define	USB_THREAD_EXIT(err)	kproc_exit(err)
+		kthread_add((f), (s), NULL, (p), 0, 0, __VA_ARGS__)
+#define	USB_THREAD_SUSPEND(p)   kthread_suspend(p,0)
+#define	USB_THREAD_EXIT(err)	kthread_exit()
 #else
 #define	USB_THREAD_CREATE(f, s, p, ...) \
 		kthread_create((f), (s), (p), RFHIGHPID, 0, __VA_ARGS__)
Index: dev/usb/usb_process.h
===================================================================
--- dev/usb/usb_process.h	(revision 196086)
+++ dev/usb/usb_process.h	(working copy)
_at__at_ -49,7 +49,7 _at__at_ struct usb_process {
 	struct cv up_cv;
 	struct cv up_drain;
 
-	struct proc *up_ptr;
+	struct thread *up_ptr;
 	struct thread *up_curtd;
 	struct mtx *up_mtx;