TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
commit 506f981ab4 upstream.

The scale of IIO bandwidth in free running counters is inherited from
the ICX. The counter increments for every 32 bytes rather than 4 bytes.

The IIO bandwidth out free running counters don't increment with a
consistent size. The increment depends on the requested size. It's
impossible to find a fixed increment. Remove it from the event_descs.

Fixes: 0378c93a92 ("perf/x86/intel/uncore: Support IIO free-running counters on Sapphire Rapids server")
Reported-by: Tang Jun <dukang.tj@alibaba-inc.com>
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/20250416142426.3933977-3-kan.liang@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kan Liang
2025-04-16 07:24:26 -07:00
committed by Greg Kroah-Hartman
parent 93c5be4da0
commit 3d81ec24e7
1 changed files with 1 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/x86/events/intel/uncore_snbep.c
+1 -57
View File
@@ -5826,69 +5826,13 @@ static struct freerunning_counters spr_iio_freerunning[] = {
[SPR_IIO_MSR_BW_OUT] = { 0x3808, 0x1, 0x10, 8, 48 },
};
static struct uncore_event_desc spr_uncore_iio_freerunning_events[] = {
/* Free-Running IIO CLOCKS Counter */
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.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.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.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.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.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.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.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.unit, "MiB"),
/* Free-Running IIO BANDWIDTH OUT Counters */
INTEL_UNCORE_EVENT_DESC(bw_out_port0, "event=0xff,umask=0x30"),
INTEL_UNCORE_EVENT_DESC(bw_out_port0.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port0.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1, "event=0xff,umask=0x31"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port1.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2, "event=0xff,umask=0x32"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port2.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3, "event=0xff,umask=0x33"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port3.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4, "event=0xff,umask=0x34"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port4.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5, "event=0xff,umask=0x35"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port5.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6, "event=0xff,umask=0x36"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port6.unit, "MiB"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7, "event=0xff,umask=0x37"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7.scale, "3.814697266e-6"),
INTEL_UNCORE_EVENT_DESC(bw_out_port7.unit, "MiB"),
{ /* end: all zeroes */ },
};
static struct intel_uncore_type spr_uncore_iio_free_running = {
.name = "iio_free_running",
.num_counters = 17,
.num_freerunning_types = SPR_IIO_FREERUNNING_TYPE_MAX,
.freerunning = spr_iio_freerunning,
.ops = &skx_uncore_iio_freerunning_ops,
.event_descs = spr_uncore_iio_freerunning_events,
.event_descs = snr_uncore_iio_freerunning_events,
.format_group = &skx_uncore_iio_freerunning_format_group,
};