From 7816cb4a0b5d999211176fca48905e23b5c89688 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 1 Sep 2015 17:52:43 +0000
Subject: [PATCH] Fix an off by one error in r283613:  Like regular ffs(),
 CPU_FFS() returns 1 for CPU 0, etc. so the return value must be decremented
 to obtain the first valid CPU ID.

Submitted by:	fabient
MFC after:	1 week
---
 usr.sbin/pmcstat/pmcstat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.sbin/pmcstat/pmcstat.c b/usr.sbin/pmcstat/pmcstat.c
index c51c5fa6daf0..914fc17d1f8e 100644
--- a/usr.sbin/pmcstat/pmcstat.c
+++ b/usr.sbin/pmcstat/pmcstat.c
@@ -769,7 +769,7 @@ main(int argc, char **argv)
 				ev->ev_count = -1;
 
 			if (option == 'S' || option == 's')
-				ev->ev_cpu = CPU_FFS(&cpumask);
+				ev->ev_cpu = CPU_FFS(&cpumask) - 1;
 			else
 				ev->ev_cpu = PMC_CPU_ANY;