mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-28 13:22:57 +00:00
Code Issues Releases Wiki Activity

perf/x86/intel/uncore: Disable I/O stacks to PMU mapping on ICX-D

Browse source 
Current implementation of I/O stacks to PMU mapping doesn't support ICX-D.
Detect ICX-D system to disable mapping.

Fixes: 10337e95e0 ("perf/x86/intel/uncore: Enable I/O stacks to IIO PMON mapping on ICX")
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221117122833.3103580-5-alexander.antonov@linux.intel.com
This commit is contained in:
Alexander Antonov 2022-11-17 12:28:26 +00:00 committed by Peter Zijlstra
parent 6532783310
commit efe062705d
2 changed files with 6 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
arch/x86/events/intel/uncore.h
View file

@ -2,6 +2,7 @@
#include <linux/slab.h>
#include <linux/pci.h>
#include <asm/apicdef.h>
#include <asm/intel-family.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/perf_event.h>

5
arch/x86/events/intel/uncore_snbep.c
View file

@ -5226,6 +5226,11 @@ static int icx_iio_get_topology(struct intel_uncore_type *type)
static int icx_iio_set_mapping(struct intel_uncore_type *type)
{
/* Detect ICX-D system. This case is not supported */
if (boot_cpu_data.x86_model == INTEL_FAM6_ICELAKE_D) {
pmu_clear_mapping_attr(type->attr_update, &icx_iio_mapping_group);
return -EPERM;
}
return pmu_iio_set_mapping(type, &icx_iio_mapping_group);
}