Module Name: src
Committed By: dyoung
Date: Tue Nov 17 17:54:15 UTC 2009
Modified Files:
src/share/man/man4: options.4
Log Message:
Describe 'options SPLDEBUG'.
To generate a diff of this commit:
cvs rdiff -u -r1.380 -r1.381 src/share/man/man4/options.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/options.4
diff -u src/share/man/man4/options.4:1.380 src/share/man/man4/options.4:1.381
--- src/share/man/man4/options.4:1.380 Wed Jun 24 23:10:02 2009
+++ src/share/man/man4/options.4 Tue Nov 17 17:54:14 2009
@@ -1,4 +1,4 @@
-.\" $NetBSD: options.4,v 1.380 2009/06/24 23:10:02 zafer Exp $
+.\" $NetBSD: options.4,v 1.381 2009/11/17 17:54:14 dyoung Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@@ -30,7 +30,7 @@
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\"
-.Dd April 10, 2009
+.Dd November 17, 2009
.Dt OPTIONS 4
.Os
.Sh NAME
@@ -1168,6 +1168,22 @@
and
.Xr vnconfig 8
for more information.
+.It Cd options SPLDEBUG
+Help the kernel programmer find bugs related to the interrupt priority
+level.
+When
+.Fn spllower
+or
+.Fn splraise
+changes the current CPU's interrupt priority level to or from
+.Dv IPL_HIGH ,
+record a backtrace.
+Read
+.Xr return_address 9
+for caveats about collecting backtraces.
+This feature is experimental, and it is only available on i386.
+See
+.Pa sys/kern/subr_spldebug.c .
.It Cd options TFTPROOT
Download the root memory disk through TFTP at root mount time.
This enables the use of a root
