[PATCH 1/3] perf_event: fix p6 FP_ASSIST event constraint

[Vince Weaver]

According to Intel SDM Volume 3B, FP_ASSIST is limited to Counter 1 only,
not Counter 0.

Tested on a Pentium II.

Signed-off-by: Vince Weaver <vincent.weaver@xxxxxxxxx>

diff -ur linux-3.7-rc1.orig/arch/x86/kernel/cpu/perf_event_p6.c linux-3.7-rc1/arch/x86/kernel/cpu/perf_event_p6.c
--- linux-3.7-rc1.orig/arch/x86/kernel/cpu/perf_event_p6.c	2012-10-14 17:41:04.000000000 -0400
+++ linux-3.7-rc1/arch/x86/kernel/cpu/perf_event_p6.c	2012-10-19 14:50:41.212241569 -0400
@@ -34,7 +34,7 @@
 {
 	INTEL_EVENT_CONSTRAINT(0xc1, 0x1),	/* FLOPS */
 	INTEL_EVENT_CONSTRAINT(0x10, 0x1),	/* FP_COMP_OPS_EXE */
-	INTEL_EVENT_CONSTRAINT(0x11, 0x1),	/* FP_ASSIST */
+	INTEL_EVENT_CONSTRAINT(0x11, 0x2),	/* FP_ASSIST */
 	INTEL_EVENT_CONSTRAINT(0x12, 0x2),	/* MUL */
 	INTEL_EVENT_CONSTRAINT(0x13, 0x2),	/* DIV */
 	INTEL_EVENT_CONSTRAINT(0x14, 0x1),	/* CYCLES_DIV_BUSY */
--
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