perf/x86/intel/rapl: Make Knights Landings support functional

The Knights Landings support added the events and the detection case, but then
returns 0 without actually initializing the driver.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Cc: Harish Chegondi <harish.chegondi@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Fixes: 3a2a7797326a4 "perf/x86/intel/rapl: Add support for Knights Landing (KNL)"
Link: http://lkml.kernel.org/r/20160222221012.149331888@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/events/intel/rapl.c b/arch/x86/events/intel/rapl.c
index 580f504ec27ccc7aa480e91522a4f7ae4e90454f..536f0cebba8f503144ea5b367e4ba902e5730bee 100644 (file)
--- a/arch/x86/events/intel/rapl.c
+++ b/arch/x86/events/intel/rapl.c
@@ -731,7 +731,7 @@ static int __init rapl_pmu_init(void)
                rapl_add_quirk(rapl_hsw_server_quirk);
                rapl_cntr_mask = RAPL_IDX_KNL;
                rapl_pmu_events_group.attrs = rapl_events_knl_attr;
-
+               break;
        default:
                /* unsupported */
                return 0;