STRUCT PVR_SYNC_SIGNAL(9)

💅 struct pvr_sync_signal — Kernel API Manual 💅

okay so this is the Kernel API Manual page for struct pvr_sync_signal(9), and it’s literally the object encoding a syncobj signal operation. no cap, we’re getting into it 💖

🌸 NAME 🌸

struct pvr_sync_signal — the object encoding a syncobj signal operation. that’s the whole vibe, bestie.

🦋 SYNOPSIS 🦋

struct pvr_sync_signal {
    u32 handle;
    u64 point;
    struct drm_syncobj *syncobj;
    struct dma_fence_chain *chain;
    struct dma_fence *fence;
 };

🧚 Members 🧚

• handle — handle of the syncobj to signal. yes, that handle 💅
• point — point to signal in the syncobj. Only relevant for timeline syncobjs, so that’s the rule ✨
• syncobj — syncobj retrieved from the handle. it came from the handle, periodt.
• chain — chain object used to link the new fence with the existing timeline syncobj. Should be zero when manipulating a regular syncobj — like, keep it at zero, fr fr.
• fence — new fence object to attach to the syncobj. This pointer starts with the current fence bound to the <handle,point> pair. iconic pointer behavior, honestly.

💖 Description 💖

okay so the job submission logic collects all signal operations in an array of pvr_sync_signal objects. This array also serves as a cache to get the latest dma_fence when multiple jobs are submitted at once, and one job signals a syncobj point that’s later waited on by a subsequent job. that’s the tea ☕ — the array is out here doing double duty and we love that for it.

👀 SEE ALSO 👀

• Kernel file ./drivers/gpu/drm/imagination/pvr_sync.h — the header, the receipts, the place to look if you want the full lore.

mwah 💋 — from ./drivers/gpu/drm/imagination, October 2026, for struct pvr_sync_signal(9). take care of your syncobjs, bestie 🫶