STRUCT MON_EVT(9)

💅 struct mon_evt(9) — the Kernel API Manual, bestie edition ✨

okay so you're reading struct mon_evt(9) from the Kernel API Manual and honestly? it's giving ✨main character energy✨ for resctrl monitor events. it's literally just a struct that holds the properties of a monitor event — no cap, that's the whole vibe. every field is a lil fact about one event and we're gonna go through all of them, one by one, because we don't skip. periodt. 🎀

---

🌸 SYNOPSIS 🌸

struct mon_evt {
    enum resctrl_event_id   evtid;
    enum resctrl_res_level  rid;
    char *name;
    u32 evt_cfg;
    bool configurable;
    bool any_cpu;
    bool is_floating_point;
    unsigned int            binary_bits;
    bool enabled;
    void *arch_priv;
 };

like, look at her. ten fields, zero notes. 🫶

---

🦋 Members 🦋

• evtid — the event id. that's it, that's the field. it's the id of the event. 💅
• rid — the resource id for this event. yep, resource id, for this event specifically. 🍓
• name — the name of the event. iconic, self-explanatory, we love a field that knows itself. ✨
• evt_cfg — the event configuration value that represents the memory transactions (e.g. READS_TO_LOCAL_MEM, READS_TO_REMOTE_MEM) being tracked by evtid.

🚨 important bestie: this one is only valid if evtid is an MBM event. otherwise? don't even look at it. 🙈

• configurable — true if the event is configurable. that's the whole tea. ⭐
• any_cpu — true if the event can be read from any CPU. any. CPU. slay. 🔥
• is_floating_point — event values are displayed in floating point format. yes queen, decimals. 🌈
• binary_bits — number of fixed-point binary bits from architecture.

🚨 another caveat: only valid if is_floating_point is true. so don't come for her if floats aren't on. 😭

• enabled — true if the event is enabled. short, sweet, to the point. 👑
• arch_priv — architecture private data for this event. the arch_priv is provided by the architecture via resctrl_enable_mon_event. literally the arch handing over its lil secrets. 🤝

---

💜 SEE ALSO 💜

so many friends, so little time — go say hi to:

• Kernel file ./fs/resctrl/internal.h
• cpumask_any_housekeeping(9)
• struct mon_data(9)
• struct rmid_read(9)
• enum rdtgrp_mode(9)
• struct mongroup(9)
• struct rdtgroup(9)
• struct rftype(9)
• struct mbm_state(9)

---

ngl, that's the whole page. every field accounted for, nothing skipped, we ate and left no crumbs. 💀✨

🌸 okay bestie, that's a wrap! this lil page lives in ./fs/resctrl, dated October 2026, and it's literally titled struct mon_evt(9) — now go read the manpage, ily, bye! 🎀💖