perf/x86/intel: Use new topology_max_smt_threads() in HT leak workaround

Now that we have topology_max_smt_threads() use it
to detect the HT workarounds for older CPUs.

Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 593b1676b5d1..5081b4cdad0d 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3989,16 +3989,14 @@ __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 (topology_max_smt_threads() > 1) {
 		pr_info("PMU erratum BJ122, BV98, HSD29 worked around, HT is on\n");
 		return 0;
 	}