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

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

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 60973c209c0e641cd133963f347ffcd1460ba4d0..35da2c486e8d8a7ca96297ab366623a0df1a3acf 100644 (file)
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -4891,28 +4891,28 @@ 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 */ },
 };