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-rw-r--r--sys/conf/NOTES13
1 files changed, 13 insertions, 0 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 3f2677d..2d5ad27 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -422,6 +422,19 @@ options COMPILING_LINT
#####################################################################
+# PERFORMANCE MONITORING OPTIONS
+
+#
+# The hwpmc driver that allows the use of in-CPU performance monitoring
+# counters for performance monitoring. The base kernel needs to configured
+# with the 'options' line, while the hwpmc device can be either compiled
+# in or loaded as a loadable kernel module.
+#
+device hwpmc # Driver (also a loadable module)
+options HWPMC_HOOKS # Other necessary kernel hooks
+
+
+#####################################################################
# NETWORKING OPTIONS
#
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