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drm/etnaviv: reduce number of ktime_get calls in IRQ handler

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A single IRQ might signal the completion of multiple jobs/fences
at once. There is no point in attaching a new timestamp to each
fence that only differs in when exactly the IRQ handler was able
to process this fence.

Get a single timestamp when the IRQ handler has determined that
there are completed jobs and reuse this for all fences that get
signalled by the handler.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
This commit is contained in:
Lucas Stach
2024-06-21 22:00:20 +02:00
parent 58979ad633
commit beb311ff0f
1 changed files with 2 additions and 1 deletions
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drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+2 -1
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@@ -1548,6 +1548,7 @@ static irqreturn_t irq_handler(int irq, void *data)
u32 intr = gpu_read(gpu, VIVS_HI_INTR_ACKNOWLEDGE); u32 intr = gpu_read(gpu, VIVS_HI_INTR_ACKNOWLEDGE);
if (intr != 0) { if (intr != 0) {
ktime_t now = ktime_get();
int event; int event;
pm_runtime_mark_last_busy(gpu->dev); pm_runtime_mark_last_busy(gpu->dev);
@@ -1597,7 +1598,7 @@ static irqreturn_t irq_handler(int irq, void *data)
*/ */
if (fence_after(fence->seqno, gpu->completed_fence)) if (fence_after(fence->seqno, gpu->completed_fence))
gpu->completed_fence = fence->seqno; gpu->completed_fence = fence->seqno;
dma_fence_signal(fence); dma_fence_signal_timestamp(fence, now);
event_free(gpu, event); event_free(gpu, event);
} }