debug_event(9)

💖 debug_event(9) 💖

okay bestie, welcome to the Kernel API Manual — this is the debug_event(9) page, and it is literally about writing a binary debug entry to the active debug area (only if level <= actual debug level, iykyk) ✨ no cap.

🌸 NAME 🌸

debug_event — writes binary debug entry to active debug area (if level <= actual debug level).

✨ SYNOPSIS ✨

debug_entry_t * debug_event (debug_info_t *id , int level , void *data ,
       int length );

🎀 ARGUMENTS 🎀

• id — handle for debug log. your lil VIP pass 💳
• level — debug level. the vibe check number 👀
• data — pointer to data for debug entry.
• length — length of data in bytes.

🔥 RETURN 🔥

• Address of written debug entry — it ate, and it left receipts 🎉
• NULL if error — not the slay we wanted 😭

🦋 SEE ALSO 🦋

Kernel file ./arch/s390/include/asm/debug.h — plus the whole bestie lineup: debug_level_enabled(9), debug_int_event(9), debug_long_event(9), debug_text_event(9), debug_sprintf_event(9), debug_exception(9), debug_int_exception(9), debug_long_exception(9), debug_text_exception(9), debug_sprintf_exception(9), and DEFINE_STATIC_DEBUG_INFO(9).

xoxo 💋 huge kisses from the ./arch/s390/include/asm source, October 2026 edition — go write those debug entries, bestie 🫶✨