STRUCT ETM_EVENT_DATA(9)

💖 NAME 💖

okay so bestie, this page is all about struct etm_event_data — Coresight specifics associated to an event. it's from the Kernel API Manual, and it's lowkey the main character struct for holding Coresight event deets ✨ no cap.

✨ SYNOPSIS ✨

here's the whole struct, literally:

struct etm_event_data {
    struct work_struct work;
    cpumask_t mask;
    cpumask_t aux_hwid_done;
    void *snk_config;
    u32 cfg_hash;
    struct coresight_path * __percpu *path;
 };

👑 Members 👑

member-by-member vibe check, let's go bestie:

• work — the handle to free allocated memory outside IRQ context. it's doing the cleanup outside IRQ context, periodt 🫶
• mask — holds the CPU(s) this event was set for. keeping track of which CPUs are in the group chat 💅
• aux_hwid_done — whether a CPU has emitted the TraceID packet or not. yes/no, iconic binary energy 🎀
• snk_config — the sink configuration. the sink's config, fr fr 🌸
• cfg_hash — the hash id of any coresight config selected. it's giving "which config got picked" 🔥
• path — an array of path, each slot for one CPU. one slot per CPU, no cap 🦋

🌈 SEE ALSO 🌈

• Kernel file ./drivers/hwtracing/coresight/coresight-etm-perf.h — struct etm_filter(9), struct etm_filters(9). go read those for the full lore 👑 iykyk.

okay that's the whole page, bestie 💖 it comes from ./drivers/hwtracing/coresight, dated October 2026, and it's literally struct etm_event_data(9). slay, you ate that kernel doc reading session ✨👑