[src/trunk]: src/sys/kern provide curthread for dtrace

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e6c5afa54ac5
branches:  trunk
changeset: 340862:e6c5afa54ac5
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Oct 07 00:32:34 2015 +0000

description:
provide curthread for dtrace

diffstat:

 sys/kern/kern_runq.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (41 lines):

diff -r 36c4ab166547 -r e6c5afa54ac5 sys/kern/kern_runq.c
--- a/sys/kern/kern_runq.c      Tue Oct 06 22:13:39 2015 +0000
+++ b/sys/kern/kern_runq.c      Wed Oct 07 00:32:34 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_runq.c,v 1.43 2014/08/03 19:14:24 wiz Exp $       */
+/*     $NetBSD: kern_runq.c,v 1.44 2015/10/07 00:32:34 christos Exp $  */
 
 /*
  * Copyright (c) 2007, 2008 Mindaugas Rasiukevicius <rmind at NetBSD org>
@@ -27,7 +27,9 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_runq.c,v 1.43 2014/08/03 19:14:24 wiz Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_runq.c,v 1.44 2015/10/07 00:32:34 christos Exp $");
+
+#include "opt_dtrace.h"
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -121,6 +123,10 @@
 static struct callout balance_ch;      /* Callout of balancer */
 #endif
 
+#ifdef KDTRACE_HOOKS
+struct lwp *curthread;
+#endif
+
 void
 runq_init(void)
 {
@@ -712,6 +718,9 @@
 
        /* Scheduler-specific hook */
        sched_pstats_hook(l, batch);
+#ifdef KDTRACE_HOOKS
+       curthread = l;
+#endif
 }
 
 /*