PERFORCE change 143146 for review

[John Birrell]

http://perforce.freebsd.org/chv.cgi?CH=143146

Change 143146 by jb at freebsd3 on 2008/06/09 02:48:27

	Backout some code that was replaced by an event handler based implementation.

Affected files ...

.. //depot/projects/dtrace6/src/sys/sys/proc.h#6 edit

Differences ...

==== //depot/projects/dtrace6/src/sys/sys/proc.h#6 (text+ko) ====

@@ -158,6 +158,8 @@
 struct td_sched;
 struct trapframe;
 struct turnstile;
+struct kdtrace_proc;
+struct kdtrace_thread;
 
 /*
  * Here we define the three structures used for process information.
@@ -334,6 +336,8 @@
 	struct mdthread td_md;		/* (k) Any machine-dependent fields. */
 	struct td_sched	*td_sched;	/* (*) Scheduler-specific data. */
 	struct kaudit_record	*td_ar;	/* (k) Active audit record, if any. */
+	struct kdtrace_thread	*td_dtrace; /* (*) DTrace-specific data. */
+	int		td_errno;	/* Error returned by last syscall. */
 } __attribute__ ((aligned (THREAD_ALIGN)));
 
 /*
@@ -619,6 +623,7 @@
 	struct p_sched	*p_sched;	/* (*) Scheduler-specific data. */
 	struct auditinfo_addr	*p_au;	/* (c) Process audit properties. */
 	STAILQ_HEAD(, ktr_request)	p_ktr;	/* (o) KTR event queue. */
+	struct kdtrace_proc	*p_dtrace; /* (*) DTrace-specific data. */
 };
 
 #define	p_session	p_pgrp->pg_session
@@ -859,21 +864,6 @@
 extern u_long ps_arg_cache_limit;
 extern int sched_quantum;		/* Scheduling quantum in ticks. */
 
-/*
- * Space to append to struct thread for DTrace specific thread
- * variables. This space is after the 'struct td_sched'.
- */
-#define KDTRACE_THREAD_SIZE 128
-
-/* Offset from 'struct thread *' to the opaque DTrace fields. */
-extern int kdtrace_thread_offset;
-
-/* Overall per-thread allocation size. */
-extern int kdtrace_thread_size;
-
-/* DTrace data for the primary thread in proc0. */
-extern char kdtrace_thread0[];
-
 LIST_HEAD(proclist, proc);
 TAILQ_HEAD(procqueue, proc);
 TAILQ_HEAD(threadqueue, thread);