From: Peter Zijlstra <peterz@infradead.org>
Date: Thu, 30 Jun 2016 09:49:08 +0000 (+0200)
Subject: perf/x86/intel: Fix rdlbr_to() MSR reading typo
X-Git-Tag: v4.9.8~1712^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aefbc4d04c7b09cb6775a32cea7986c62e489ee2;p=platform%2Fkernel%2Flinux-rpi3.git

perf/x86/intel: Fix rdlbr_to() MSR reading typo

It helps to actually read the right MSR..

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Fixes: d4cf1949f968 ("perf/x86/intel: Add {rd,wr}lbr_{to,from} wrappers")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index cc4555a..707d358 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -323,7 +323,7 @@ static inline u64 rdlbr_to(unsigned int idx)
 {
 	u64 val;
 
-	rdmsrl(x86_pmu.lbr_from + idx, val);
+	rdmsrl(x86_pmu.lbr_to + idx, val);
 
 	return val;
 }