drm/panthor: Add tracepoint for cache flushing

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Add a new event tracepoint: gpu_cache_flush to be emitted after a GPU
cache flush completes, with duration and return status arguments.

This allows debugging the duration a flush takes irrespective of initial
function entry lock contention, and communicates information about
whether the flush timed out or errored out in other ways, and which
caches were flushed.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260812-panthor-cache-flush-fix-v4-1-751e32901898@collabora.com

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Nicolas Frattaroli 2026-08-12 16:07:18 +02:00 • committed by Liviu Dudau

parent fe2aecf33a

commit 3fc4721629

2 changed files with 63 additions and 1 deletions

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26

drivers/gpu/drm/panthor/panthor_gpu.c

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38

drivers/gpu/drm/panthor/panthor_trace.h

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