From 50652bcc22780183839fe6fa005166e9dd57a38e Mon Sep 17 00:00:00 2001
From: jhb <jhb@FreeBSD.org>
Date: Thu, 21 Aug 2008 19:22:13 +0000
Subject: Add a "CACHING" section regarding the internal caching of kernel
 variables and the ability to clear that cache.

---
 lib/libkvm/kvm_getpcpu.3 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/libkvm/kvm_getpcpu.3 b/lib/libkvm/kvm_getpcpu.3
index 87cd139..40f16ac 100644
--- a/lib/libkvm/kvm_getpcpu.3
+++ b/lib/libkvm/kvm_getpcpu.3
@@ -71,6 +71,14 @@ If
 is not active, then
 .Dv NULL
 is returned instead.
+.Sh CACHING
+These functions cache the nlist values for various kernel variables which are
+reused in successive calls.
+You may call either function with
+.Fa kd
+set to
+.Dv NULL
+to clear this cache.
 .Sh RETURN VALUES
 On success, the
 .Fn kvm_getmaxcpu
-- 
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