perf/x86/intel/uncore: Fix the scale of IIO free running counters on SNR

commit 96a720db59ab330c8562b2437153faa45dac705f upstream.

There was a mistake in the SNR uncore spec. The counter increments for
every 32 bytes of data sent from the IO agent to the SOC, not 4 bytes
which was documented in the spec.

The event list has been updated:

  "EventName": "UNC_IIO_BANDWIDTH_IN.PART0_FREERUN",
  "BriefDescription": "Free running counter that increments for every 32
		       bytes of data sent from the IO agent to the SOC",

Update the scale of the IIO bandwidth in free running counters as well.

Fixes: 210cc5f9db7a ("perf/x86/intel/uncore: Add uncore support for Snow Ridge server")
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250416142426.3933977-1-kan.liang@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index fe2edc760e609cc3cc7ea46ae3373437caae0856..de0efeaa61f0d09e0ab3f8897dade1a6ed71f4d7 100644 (file)
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -4220,28 +4220,28 @@ static struct uncore_event_desc snr_uncore_iio_freerunning_events[] = {
        INTEL_UNCORE_EVENT_DESC(ioclk,                  "event=0xff,umask=0x10"),
        /* Free-Running IIO BANDWIDTH IN Counters */
        INTEL_UNCORE_EVENT_DESC(bw_in_port0,            "event=0xff,umask=0x20"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port0.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port0.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port0.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port1,            "event=0xff,umask=0x21"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port1.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port1.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port1.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port2,            "event=0xff,umask=0x22"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port2.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port2.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port2.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port3,            "event=0xff,umask=0x23"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port3.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port3.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port3.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port4,            "event=0xff,umask=0x24"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port4.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port4.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port4.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port5,            "event=0xff,umask=0x25"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port5.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port5.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port5.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port6,            "event=0xff,umask=0x26"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port6.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port6.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port6.unit,       "MiB"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port7,            "event=0xff,umask=0x27"),
-       INTEL_UNCORE_EVENT_DESC(bw_in_port7.scale,      "3.814697266e-6"),
+       INTEL_UNCORE_EVENT_DESC(bw_in_port7.scale,      "3.0517578125e-5"),
        INTEL_UNCORE_EVENT_DESC(bw_in_port7.unit,       "MiB"),
        { /* end: all zeroes */ },
 };