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 a8f11e60b98794b3461eb7420d3ea4c38307292e..5d7e15cb85350a76ee9ea4520c1cb2f2c33ea969 100644 (file)
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -4882,28 +4882,28 @@ 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 */ },
 };