[PATCH V4 03/14] perf/x86/intel: Move BTS index to 47

[kan . liang]

From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>

The bit 48 in the PERF_GLOBAL_STATUS is used to indicate the overflow
status of PERF_METRICS counters now.

Move BTS index to 47.

Signed-off-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
---

New patch for V4

 arch/x86/include/asm/perf_event.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index 9f15a700d1db..eb460b63e07b 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -175,11 +175,11 @@ struct x86_pmu_capability {
 /*
  * We model BTS tracing as another fixed-mode PMC.
  *
- * We choose a value in the middle of the fixed event range, since lower
+ * We choose value 47 for the fixed index of BTS, since lower
  * values are used by actual fixed events and higher values are used
  * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
  */
-#define INTEL_PMC_IDX_FIXED_BTS				(INTEL_PMC_IDX_FIXED + 16)
+#define INTEL_PMC_IDX_FIXED_BTS				(INTEL_PMC_IDX_FIXED + 15)
 
 #define GLOBAL_STATUS_COND_CHG				BIT_ULL(63)
 #define GLOBAL_STATUS_BUFFER_OVF			BIT_ULL(62)
-- 
2.17.1