Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/v3d: Add parameter to retrieve the global number of GPU resets
The GL extension KHR_robustness uses the number of global and per-context
GPU resets to learn about graphics resets that affect a GL context. This
commit introduces a new V3D parameter to retrieve the global number of
GPU resets that have happened since the driver was probed.
To retrieve this information, user-space must use DRM_V3D_PARAM_GLOBAL_RESET_COUNTER.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://lore.kernel.org/r/20250711-v3d-reset-counter-v1-1-1ac73e9fca2d@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
+13
+5
drivers/gpu/drm/v3d/v3d_drv.c
+5
drivers/gpu/drm/v3d/v3d_drv.c
···
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case DRM_V3D_PARAM_SUPPORTS_SUPER_PAGES:
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args->value = !!v3d->gemfs;
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return 0;
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+
case DRM_V3D_PARAM_GLOBAL_RESET_COUNTER:
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mutex_lock(&v3d->reset_lock);
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args->value = v3d->reset_counter;
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mutex_unlock(&v3d->reset_lock);
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return 0;
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default:
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DRM_DEBUG("Unknown parameter %d\n", args->param);
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return -EINVAL;
+5
drivers/gpu/drm/v3d/v3d_drv.h
+5
drivers/gpu/drm/v3d/v3d_drv.h
···
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* all jobs.
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*/
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struct v3d_perfmon *global_perfmon;
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+
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/* Global reset counter. The counter must be incremented when
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* a GPU reset happens. It must be protected by @reset_lock.
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*/
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unsigned int reset_counter;
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};
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static inline struct v3d_dev *
+2
drivers/gpu/drm/v3d/v3d_sched.c
+2
drivers/gpu/drm/v3d/v3d_sched.c