diff --git a/[refs] b/[refs]
index ff364bb9d12c..f2a130af701f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1d199b1ad606ae8b88acebd295b101c4e1cf2a57
+refs/heads/master: 8ea7f544100844307072cae2f5fc108afdef999a
diff --git a/trunk/arch/x86/include/asm/perf_event_p4.h b/trunk/arch/x86/include/asm/perf_event_p4.h
index b47b9e9ac13f..b842b3238e46 100644
--- a/trunk/arch/x86/include/asm/perf_event_p4.h
+++ b/trunk/arch/x86/include/asm/perf_event_p4.h
@@ -319,6 +319,7 @@ static inline u32 p4_default_escr_conf(int cpu, int exclude_os, int exclude_usr)
 
 #define P4_BSQ_ACTIVE_ENTRIES		P4_EVENT_PACK(0x06, 0x07)
 	/*
+	 * NOTE: no ESCR name in docs, it's guessed
 	 * MSR_P4_BSU_ESCR1:	2, 3
 	 */
 
@@ -468,8 +469,8 @@ static inline u32 p4_default_escr_conf(int cpu, int exclude_os, int exclude_usr)
 
 #define P4_UOPS_RETIRED			P4_EVENT_PACK(0x01, 0x04)
 	/*
-	 * MSR_P4_CRU_ESCR2:	12, 13, 16
-	 * MSR_P4_CRU_ESCR3:	14, 15, 17
+	 * MSR_P4_CRU_ESCR0:	12, 13, 16
+	 * MSR_P4_CRU_ESCR1:	14, 15, 17
 	 */
 
 #define P4_UOP_TYPE			P4_EVENT_PACK(0x02, 0x02)