From 5db1a042c2ea6d450185dd3533273382acbb8b6c Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Thu, 11 Dec 2008 15:33:43 +0000
Subject: [PATCH] stacktrace feature.

---
 kernel/system/do_vmctl.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/system/do_vmctl.c b/kernel/system/do_vmctl.c
index 8517c57d7..bceeed639 100644
--- a/kernel/system/do_vmctl.c
+++ b/kernel/system/do_vmctl.c
@@ -26,11 +26,6 @@ register message *m_ptr;	/* pointer to request message */
 
   vm_init();
 
-  if(m_ptr->m_source != VM_PROC_NR) {
-	kprintf("do_vmctl: source %d, not VM\n", m_ptr->m_source);
-	return ENOSYS;
-  }
-
   if(!isokendpt(ep, &proc_nr)) {
 	kprintf("do_vmctl: unexpected endpoint %d from VM\n", ep);
 	return EINVAL;
@@ -97,6 +92,10 @@ kprintf("SYSTEM: request %d:0x%lx-0x%lx, wrflag %d, failed\n",
 		}
 #endif
 		return OK;
+	case VMCTL_STACKTRACE:
+		kprintf("vmctl stacktrace ");
+		proc_stacktrace(p);
+		return OK;
   }
 
   /* Try architecture-specific vmctls. */