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drm/xe/pmu: Initialize PMU event types based on first available GT

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GT ID#0 (primary GT on tile 0) may not always be available if the
primary GT has been disabled via configfs.  Instead use the first
available GT when determining which PMU events are supported.  If there
are no GTs, then don't advertise any GT-related events.

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20251013200944.2499947-36-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
This commit is contained in:
Matt Roper 2025-10-13 13:09:54 -07:00
parent 090e7fc422
commit 999ef874c1
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/xe/xe_pmu.c
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@ -497,7 +497,12 @@ static const struct attribute_group *pmu_events_attr_update[] = {
static void set_supported_events(struct xe_pmu *pmu)
{
struct xe_device *xe = container_of(pmu, typeof(*xe), pmu);
struct xe_gt *gt = xe_device_get_gt(xe, 0);
struct xe_gt *gt;
int id;
/* If there are no GTs, don't support any GT-related events */
if (xe->info.gt_count == 0)
return;
if (!xe->info.skip_guc_pc) {
pmu->supported_events |= BIT_ULL(XE_PMU_EVENT_GT_C6_RESIDENCY);
@ -505,6 +510,10 @@ static void set_supported_events(struct xe_pmu *pmu)
pmu->supported_events |= BIT_ULL(XE_PMU_EVENT_GT_REQUESTED_FREQUENCY);
}
/* Find the first available GT to query engine event capabilities */
for_each_gt(gt, xe, id)
break;
if (xe_guc_engine_activity_supported(&gt->uc.guc)) {
pmu->supported_events |= BIT_ULL(XE_PMU_EVENT_ENGINE_ACTIVE_TICKS);
pmu->supported_events |= BIT_ULL(XE_PMU_EVENT_ENGINE_TOTAL_TICKS);