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-rw-r--r--share/examples/perfmon/README5
1 files changed, 3 insertions, 2 deletions
diff --git a/share/examples/perfmon/README b/share/examples/perfmon/README
index ccd6877a175a..ffa2cafa92c8 100644
--- a/share/examples/perfmon/README
+++ b/share/examples/perfmon/README
@@ -18,7 +18,8 @@ The following options are not implemented on Pentium CPUs:
-i invert sense of count mask comparison
-U n use unit mask `n'
-There is one mandatory argument, which must be the number of the counter.
-All numbers can be specified in any format acceptable to strtol(3).
+There is one mandatory argument, which is the event number to be
+monitored, defined in <machine/perfmon.h>. All numbers can be
+specified in any format acceptable to strtol(3).
$FreeBSD$