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i915/guc: Accumulate active runtime on gt reset

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On gt reset, if a context is running, then accumulate it's active time
into the busyness counter since there will be no chance for the context
to switch out and update it's run time.

v2: Move comment right above the if (John)

Fixes: 77cdd054dd ("drm/i915/pmu: Connect engine busyness stats from GuC to pmu")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241127174006.190128-4-umesh.nerlige.ramappa@intel.com
(cherry picked from commit 7ed047da59)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
This commit is contained in:
Umesh Nerlige Ramappa 2024-11-27 09:40:06 -08:00 committed by Tvrtko Ursulin
parent 59a0b46788
commit 1622ed27d2
1 changed files with 14 additions and 1 deletions
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15
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
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@ -1449,8 +1449,21 @@ static void __reset_guc_busyness_stats(struct intel_guc *guc)
guc_update_pm_timestamp(guc, &unused);
for_each_engine(engine, gt, id) {
struct intel_engine_guc_stats *stats = &engine->stats.guc;
guc_update_engine_gt_clks(engine);
engine->stats.guc.prev_total = 0;
/*
* If resetting a running context, accumulate the active
* time as well since there will be no context switch.
*/
if (stats->running) {
u64 clk = guc->timestamp.gt_stamp - stats->start_gt_clk;
stats->total_gt_clks += clk;
}
stats->prev_total = 0;
stats->running = 0;
}
spin_unlock_irqrestore(&guc->timestamp.lock, flags);