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perf/x86/uncore: Retrieve the unit ID from the unit control RB tree

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The box_ids only save the unit ID for the first die. If a unit, e.g., a
CXL unit, doesn't exist in the first die. The unit ID cannot be
retrieved.

The unit control RB tree also stores the unit ID information.
Retrieve the unit ID from the unit control RB tree

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Yunying Sun <yunying.sun@intel.com>
Link: https://lore.kernel.org/r/20240614134631.1092359-4-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2024-06-14 06:46:26 -07:00 committed by Peter Zijlstra
parent c74443d92f
commit 585463fee6
1 changed files with 3 additions and 0 deletions
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3
arch/x86/events/intel/uncore.c
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@ -862,6 +862,9 @@ static const struct attribute_group uncore_pmu_attr_group = {
static inline int uncore_get_box_id(struct intel_uncore_type *type,
struct intel_uncore_pmu *pmu)
{
if (type->boxes)
return intel_uncore_find_discovery_unit_id(type->boxes, -1, pmu->pmu_idx);
return type->box_ids ? type->box_ids[pmu->pmu_idx] : pmu->pmu_idx;
}