drm/etnaviv: hold GPU lock across perfmon sampling

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[ Upstream commit 37dc473744 ]

The perfmon sampling mutates shared GPU state (e.g. VIVS_HI_CLOCK_CONTROL
to select the pipe for the perf counter reads). To avoid clashing with
other functions mutating the same state (e.g. etnaviv_gpu_update_clock)
the perfmon sampling needs to hold the GPU lock.

Fixes: 68dc0b295d ("drm/etnaviv: use 'sync points' for performance monitor requests")
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Lucas Stach 2024-07-05 22:00:09 +02:00 • committed by Greg Kroah-Hartman

parent d4ce36476c

commit 940389e96d

1 changed files with 14 additions and 6 deletions

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drivers/gpu/drm/etnaviv/etnaviv_gpu.c

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