STRUCT DRM_PANTHOR_TIMESTAMP_INFO(9)

💖 NAME 💖

struct drm_panthor_timestamp_info — the timestamp info struct, aka the glow-up cheat sheet for everything time-y on your GPU. This is a page straight out of the Kernel API Manual, bestie, and it's about to be your new fave.

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✨ SYNOPSIS ✨

okay so here's the whole vibe, literally the entire struct, no cap:

struct drm_panthor_timestamp_info {
    __u64 timestamp_frequency;
    __u64 current_timestamp;
    __u64 timestamp_offset;
    __u32 flags;
    __u32 duration_nsec;
    __u64 cycle_count;
    __u64 cpu_timestamp_sec;
    __u64 cpu_timestamp_nsec;
 };

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🎀 MEMBERS 🎀

one field at a time, bestie, we're going through them all 💅

• timestamp_frequency — how fast the timestamp timer ticks, fr. Or 0 if nobody knows. shrug 🙈
• current_timestamp — the GPU timestamp right now, like live, in this moment, main character energy ⭐
• timestamp_offset — the offset of the GPU timestamp timer. the little shift it's living with ✨
• flags — a bitmask of drm_panthor_timestamp_info_flags.

If it's set to 0, that gets interpreted as: DRM_PANTHOR_TIMESTAMP_GPU | DRM_PANTHOR_TIMESTAMP_GPU_OFFSET | DRM_PANTHOR_TIMESTAMP_FREQ

⚠️ heads up bestie: these next flags are exclusive to each other — only one can be used at a time, no mixing, no blending, periodt:

• DRM_PANTHOR_TIMESTAMP_CPU_NONE
• DRM_PANTHOR_TIMESTAMP_CPU_MONOTONIC
• DRM_PANTHOR_TIMESTAMP_CPU_MONOTONIC_RAW

• duration_nsec — how long the time query took. the duration, bestie ⏱️
• cycle_count — the value of GPU_CYCLE_COUNT. that's it, that's the field 🔥
• cpu_timestamp_sec — the seconds part of the CPU timestamp 🍓
• cpu_timestamp_nsec — the nanoseconds part of the CPU timestamp. tiny little sliver of time 🧚

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🌸 DESCRIPTION 🌸

It's a struct that groups up all the queryable info relating to the GPU timestamp. like a little friend group of fields, all hanging out together in one place 🫶 one struct to hold them all, iconic behavior honestly 👑

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🦋 SEE ALSO 🦋

the whole extended universe, in order, nothing skipped, iykyk:

Kernel file ./include/uapi/drm/panthor_drm.h Introduction(9), MMIO regions exposed to userspace.(9), IOCTL IDs(9), IOCTL arguments(9), struct drm_panthor_obj_array(9), DRM_PANTHOR_OBJ_ARRAY(9), enum drm_panthor_sync_op_flags(9), struct drm_panthor_sync_op(9), enum drm_panthor_dev_query_type(9), enum drm_panthor_gpu_coherency(9), struct drm_panthor_gpu_info(9), struct drm_panthor_csif_info(9), enum drm_panthor_timestamp_info_flags(9), struct drm_panthor_mmu_info(9), struct drm_panthor_group_priorities_info(9), struct drm_panthor_dev_query(9), struct drm_panthor_vm_create(9), struct drm_panthor_vm_destroy(9), enum drm_panthor_vm_bind_op_flags(9), struct drm_panthor_vm_bind_op(9), enum drm_panthor_vm_bind_flags(9), struct drm_panthor_vm_bind(9), enum drm_panthor_vm_state(9), struct drm_panthor_vm_get_state(9), enum drm_panthor_bo_flags(9), struct drm_panthor_bo_create(9), struct drm_panthor_bo_mmap_offset(9), struct drm_panthor_queue_create(9), enum drm_panthor_group_priority(9), struct drm_panthor_group_create(9), struct drm_panthor_group_destroy(9), struct drm_panthor_queue_submit(9), struct drm_panthor_group_submit(9), enum drm_panthor_group_state_flags(9), struct drm_panthor_group_get_state(9), struct drm_panthor_tiler_heap_create(9), struct drm_panthor_tiler_heap_destroy(9), struct drm_panthor_bo_set_label(9), struct drm_panthor_set_user_mmio_offset(9), enum drm_panthor_bo_sync_op_type(9), struct drm_panthor_bo_sync_op(9), struct drm_panthor_bo_sync(9), enum drm_panthor_bo_extra_flags(9), struct drm_panthor_bo_query_info(9), DRM_IOCTL_PANTHOR(9)

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and that's the whole page, bestie!! 💜 this lil drop came from ./include/uapi/drm, dated October 2026 — go read the source, it slays, mwah 🎀✨💅