STRUCT DRM_TEGRA_WAITCHK(9)

💖 struct drm_tegra_waitchk(9) 💖

okay so bestie, we're in the Kernel API Manual today and the main character is struct drm_tegra_waitchk — literally just a "wait check structure" ✨ ngl it's small but it's doing Important Work.

---

🌸 NAME 🌸

struct drm_tegra_waitchk — the wait check structure 🫶

---

✨ SYNOPSIS ✨

here's the whole vibe, no cap:

struct drm_tegra_waitchk {
    __u32 handle;
    __u32 offset;
    __u32 syncpt;
    __u32 thresh;
 };

four __u32s and she's ready to go 💅

---

🎀 Members 🎀

okay so let's meet the squad, one member at a time 👑

• handle — this is the handle to the GEM object containing a command stream, aka the spot where you're gonna perform the wait check 🦋
• offset — the offset, in bytes, of the location in the command stream where you perform the wait check on. yes, bytes. the unit matters bestie 💖
• syncpt — the ID of the syncpoint to wait check ⭐
• thresh — the threshold value that you're checking against 🌸

that's it. that's the whole struct. she's compact and she knows it 😭

---

💜 SEE ALSO 💜

go look at the kernel file ./include/uapi/drm/tegra_drm.h for the source of truth 📁, and then honestly just go meet the whole extended family, they're all linked:

• struct drm_tegra_gem_create(9)
• struct drm_tegra_gem_mmap(9)
• struct drm_tegra_syncpt_read(9)
• struct drm_tegra_syncpt_incr(9)
• struct drm_tegra_syncpt_wait(9)
• struct drm_tegra_open_channel(9)
• struct drm_tegra_close_channel(9)
• struct drm_tegra_get_syncpt(9)
• struct drm_tegra_get_syncpt_base(9)
• struct drm_tegra_syncpt(9)
• struct drm_tegra_cmdbuf(9)
• struct drm_tegra_reloc(9)
• struct drm_tegra_submit(9)
• struct drm_tegra_gem_set_tiling(9)
• struct drm_tegra_gem_get_tiling(9)
• struct drm_tegra_gem_set_flags(9)
• struct drm_tegra_gem_get_flags(9)
• DRM_TEGRA_SUBMIT_RELOC_SECTOR_LAYOUT(9)
• DRM_TEGRA_SUBMIT_CMD_GATHER_UPTR(9)
• DRM_TEGRA_SUBMIT_CMD_WAIT_SYNCPT(9)
• DRM_TEGRA_SUBMIT_CMD_WAIT_SYNCPT_RELATIVE(9)

like, the whole group chat, fr fr 🫶

---

aaand that's the page!! 💀✨ this one lives at ./include/uapi/drm, dated October 2026, and it's filed under struct drm_tegra_waitchk(9) — slay, go forth and wait check responsibly 🧚💜