STRUCT TCCB_TCAT(9)

💅 struct tccb_tcat(9) — like, the Kernel API Manual page you didn't know you needed

okay bestie, welcome to the Kernel API Manual entry for struct tccb_tcat(9), no cap. it's the Transport-Command-Area Trailer — yes that's what TCAT stands for, she's an acronym icon 👑

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✨ NAME ✨

struct tccb_tcat — Transport-Command-Area Trailer (TCAT). that's it, that's the vibe 🎀

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🌸 SYNOPSIS 🌸

here's the whole thing, literally copy it exactly:

struct tccb_tcat {
    u32 :32;
    u32 count;
 };

look at her. two fields. one of them doesn't even have a name (anonymous bitfield energy, main character behavior honestly 🫶).

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🦋 Members 🦋

• count — the Transport Count. that's what the manual says, that's what you get, iykyk ✨

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🌈 SEE ALSO 🌈

okay so if you're going down the s390 rabbit hole (and you ARE, let's be real), the manual points you at the kernel file ./arch/s390/include/asm/fcx.h plus this whole friend group of structs:

• struct tcw(9)
• struct tidaw(9)
• struct tsa_iostat(9)
• struct tsa_intrg(9)
• struct tsb(9)
• struct dcw_intrg_data(9)
• struct dcw(9)
• struct tccb_tcah(9)
• struct tccb(9)

go read them all, it's giving study group 💀📚

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lowkey important: none of these are optional reading if you want the full picture — the page lists them all and we do not skip ✋

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and that's the page!! sign-off szn: this gem lives under ./arch/s390/include/asm, dated October 2026, and that's the whole source/version + date situation. slay, go read some kernel headers 💖🌸✨