Module Name: src
Committed By: yamt
Date: Thu Jun 2 00:58:26 UTC 2011
Modified Files:
src/share/man/man9: cpu_switchto.9
Log Message:
mention memory barriers necessary for non-interlocked adaptive mutex release.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/share/man/man9/cpu_switchto.9
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/man9/cpu_switchto.9
diff -u src/share/man/man9/cpu_switchto.9:1.11 src/share/man/man9/cpu_switchto.9:1.12
--- src/share/man/man9/cpu_switchto.9:1.11 Tue Apr 13 06:05:56 2010
+++ src/share/man/man9/cpu_switchto.9 Thu Jun 2 00:58:26 2011
@@ -1,4 +1,4 @@
-.\" $NetBSD: cpu_switchto.9,v 1.11 2010/04/13 06:05:56 jruoho Exp $
+.\" $NetBSD: cpu_switchto.9,v 1.12 2011/06/02 00:58:26 yamt Exp $
.\"
.\" Copyright (c)2007 YAMAMOTO Takashi,
.\" All rights reserved.
@@ -25,7 +25,7 @@
.\" SUCH DAMAGE.
.\"
.\" ------------------------------------------------------------
-.Dd April 13, 2010
+.Dd June 2, 2011
.Dt CPU_SWITCHTO 9
.Os
.\" ------------------------------------------------------------
@@ -64,6 +64,12 @@
.Xr curlwp 9
to
.Fa newlwp .
+If the architecture does non-interlocked adaptive mutex release,
+.Fn cpu_switchto
+does an equivalent of
+.Xr membar_producer 9 ,
+before and after the modification of
+.Xr curlwp 9 .
.It
.Fn cpu_switchto
should be called at
@@ -138,5 +144,6 @@
.Sh SEE ALSO
.Xr swapcontext 3 ,
.Xr intro 9 ,
+.Xr membar_producer 9 ,
.Xr mutex 9 ,
.Xr spl 9
