STRUCT RFTYPE(9)

💖 NAME 💖

okay bestie, welcome to struct rftype(9) — the Kernel API Manual page that describes each file in the resctrl file system. ngl, that's it, that's the assignment. 🫶

📜 SYNOPSIS 📜

struct rftype {
    char *name;
    umode_t mode;
    const struct kernfs_ops *kf_ops;
    unsigned long           flags;
    unsigned long           fflags;
    int (*seq_show)(struct kernfs_open_file *of, struct seq_file *sf,
void *v);
    ssize_t (*write)(struct kernfs_open_file *of, char *buf, size_t
nbytes, loff_t off);
 };

🎀 Members 🎀

bestie, here's the cast — every field is literally carrying its own little job, and it's giving blueprint energy, ngl. ✨

• name — File name. iconic.
• mode — Access mode. the vibe check for access.
• kf_ops — File operations. the behavior squad.
• flags — File specific RFTYPE_FLAGS_* flags. yes, those exact flags.
• fflags — File specific RFTYPE_* flags. not a typo, it's fflags.
• seq_show — Show content of the file. the reveal. 👀
• write — Write to the file. putting stuff in. 💅

👑 SEE ALSO 👑

Kernel file ./fs/resctrl/internal.h — then the linked besties, fr fr:

• cpumask_any_housekeeping(9)
• struct mon_evt(9)
• struct mon_data(9)
• struct rmid_read(9)
• enum rdtgrp_mode(9)
• struct mongroup(9)
• struct rdtgroup(9)
• struct mbm_state(9)

source/version vibes: ./fs/resctrl 🌸 date: October 2026 — and that's the struct rftype(9) sign-off, periodt. 💜