Changed the way user/kernel time is tracked for threads. Now, thread_at_kernel_entry()

and thread_at_kernel_exit() are always called for userland threads at the appropriate
situation (note, I've renamed those from *_atkernel_*).
The timing should be more accurate this way, and the thread::last_time_type field
is no longer needed: all interrupts are now added to the kernel time (where the
time is actually spent).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11331 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/thread.h

@@ -31,9 +31,9 @@ struct thread *thread_dequeue_id(struct thread_queue *q, thread_id thr_id);
 void scheduler_enqueue_in_run_queue(struct thread *thread);
 void scheduler_remove_from_run_queue(struct thread *thread);
 
-void thread_atkernel_entry(void);
+void thread_at_kernel_entry(void);
 	// called when the thread enters the kernel on behalf of the thread
-void thread_atkernel_exit(void);
+void thread_at_kernel_exit(void);
 
 status_t thread_init(struct kernel_args *args);
 status_t thread_per_cpu_init(int32 cpu_num);
@@ -80,11 +80,6 @@ struct rlimit;
 int _user_getrlimit(int resource, struct rlimit * rlp);
 int _user_setrlimit(int resource, const struct rlimit * rlp);
 
-#if 1
-// XXX remove later
-int thread_test(void);
-#endif
-
 #ifdef __cplusplus
 }
 #endif

headers/private/kernel/thread_types.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2004, Haiku Inc.
+ * Copyright 2004-2005, Haiku Inc.
  * Distributed under the terms of the MIT License.
  *
  * Thread definition and structures
@@ -44,11 +44,6 @@ enum team_state {
 	TEAM_STATE_DEATH	// being killed
 };
 
-enum {
-	KERNEL_TIME,
-	USER_TIME
-};
-
 #define THREAD_RETURN_EXIT			0x1
 #define THREAD_RETURN_INTERRUPTED	0x2
 
@@ -187,7 +182,6 @@ struct thread {
 	bigtime_t		user_time;
 	bigtime_t		kernel_time;
 	bigtime_t		last_time;
-	int32			last_time_type;	// KERNEL_TIME or USER_TIME
 
 	// architecture dependant section
 	struct arch_thread arch_info;