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[PATCH 04/11] x86, perf: Use new ht_on flag in HT leak workaround

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From: Andi Kleen <ak@linux.intel.com>

Now that we have a convenient ht_on flag in x86_pmu use it
to detect the HT workarounds for older CPUs.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 arch/x86/events/intel/core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index ca693b3..d63ddb0 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3854,16 +3854,14 @@ __init int intel_pmu_init(void)
  */
 static __init int fixup_ht_bug(void)
 {
-	int cpu = smp_processor_id();
-	int w, c;
+	int c;
 	/*
 	 * problem not present on this CPU model, nothing to do
 	 */
 	if (!(x86_pmu.flags & PMU_FL_EXCL_ENABLED))
 		return 0;
 
-	w = cpumask_weight(topology_sibling_cpumask(cpu));
-	if (w > 1) {
+	if (x86_pmu.ht_on) {
 		pr_info("PMU erratum BJ122, BV98, HSD29 worked around, HT is on\n");
 		return 0;
 	}
-- 
2.5.5

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Add top down metrics to perf stat Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:10 +0100
  [PATCH 04/11] x86, perf: Use new ht_on flag in HT leak workaround Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:10 +0100
  [PATCH 06/11] perf, tools, stat: Force --per-core mode for .aggr-per-core aliases Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:10 +0100
  [PATCH 10/11] perf, tools, stat: Add computation of TopDown formulas Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 01/11] x86, perf: Support sysfs files depending on SMT status Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 09/11] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 11/11] perf, tools, stat: Add extra output of counter values with -v Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 05/11] perf, tools: Parse an .aggr-per-core event attribute Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 03/11] x86, perf: Add Top Down events to Intel Atom Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 08/11] perf, tools, stat: Scale values by unit before metrics Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 02/11] x86, perf: Add Top Down events to Intel Core Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  [PATCH 07/11] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen <andi@firstfloor.org> - 2016-03-23 00:20 +0100
  Re: Add top down metrics to perf stat Jiri Olsa <jolsa@redhat.com> - 2016-03-27 13:30 +0200
    Re: Add top down metrics to perf stat Andi Kleen <andi@firstfloor.org> - 2016-03-27 17:30 +0200

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