STRUCT PERF_DATA(9)

💖 NAME 💖

okay so bestie, welcome to struct perf_data(9) from the Kernel API Manual — and it's literally just a wrapper around a file used for perf.data reading or writing. that's the vibe. periodt. 🎀

✨ SYNOPSIS ✨

struct perf_data {
    const char              *path;
    struct perf_data_file    file;
    bool open;
    bool is_pipe;
    bool is_dir;
    bool force;
    bool in_place_update;
    enum perf_data_mode      mode:8;
    struct {
      u64 version;
      struct perf_data_file   *files;
      int nr;
    } dir;
 };

🫶 Members 🫶

• path — the path to open and of the file. if it's NULL, that implies 'perf.data' will be used. 💅
• file — the underlying file to be used. slay.
• open — has the file or directory been opened. yes/no energy.
• is_pipe — the underlying file is a pipe. iconic little tube situation.
• is_dir — the underlying file is a directory. it's giving folder.
• force — ignore opening a file that was created by a different user. bold move, ngl.
• in_place_update — a file opened for reading but will be written to. the plot twist 🔥
• mode — read or write mode. pick your main character era.

🌈 SEE ALSO 🌈

• Kernel file ./tools/perf/util/data.h
• struct perf_data_file(9)

xoxo, your unix bestie 💅 — from ./tools/perf/util, dated October 2026 ✨🦋