STRUCT DATA_LOC_INFO(9)

💫 struct data_loc_info(9) 💫

okay bestie, welcome to the Kernel API Manual entry for struct data_loc_info(9) — the struct that is literally all about data location information. no cap, it’s a whole little bundle of fields and we are gonna go through every single one. 🫶

🎀 NAME 🎀

struct data_loc_info — Data location information. it’s giving “data-location information, but make it a struct,” and honestly? iconic. ✨

🦋 SYNOPSIS 🦋

here’s the exact struct, bestie — every type and field name matching the source, no edits, no guesses:

struct data_loc_info {
    const struct arch *arch;
    struct thread *thread;
    struct map_symbol *ms;
    u64 ip;
    u64 var_addr;
    u8 cpumode;
    struct annotated_op_loc *op;
    struct debuginfo *di;
    int fbreg;
    bool fb_cfa;
    int type_offset;
 };

lowkey important: that closing }; is part of the struct, not me being dramatic. 💀

💖 Members 💖

okay so the member roster is right here, and every single one is carrying its own info. periodt. 🌸

• arch — the CPU architecture info lives here. 🏛️
• thread — thread info, obviously. 🧵
• ms — map and symbol info, together. 🗺️
• ip — instruction address. yes bestie, that ip. ⭐
• var_addr — data address, specifically for global variables. 🌍
• cpumode — CPU execution mode. 🔥
• op — instruction operand location, covering regs and offset. 🎀
• di — debug info. 🐛
• fbreg — frame base register. 🦋
• fb_cfa — tells you whether the frame needs to check CFA. 🙈
• type_offset — the final offset in the type. 💜

🌈 SEE ALSO 🌈

the SEE ALSO squad is right here, bestie:

• Kernel file ./tools/perf/util/annotate-data.h struct annotated_member(9)
• struct type_hist_entry(9)
• struct type_hist(9)
• struct annotated_data_type(9)
• struct annotated_data_stat(9)

mwah 💋 cute little sign-off: source/version is ./tools/perf/util, date is October 2026, and the page is struct data_loc_info(9). that’s the whole footer, bestie — now go be iconic with your data locations. 🎀✨