pm_genpd_init(9)

📦 version 7.3.1, in nixpkgs unstable

💖 pm_genpd_init — the Kernel API Manual glow-up ✨

okay so real talk, this one lives in the Kernel API Manual (section 9, the big-kid kernel section, iykyk) and it's literally the "make a generic I/O PM domain object exist" moment. main character energy for a struct 🎀

✨ NAME ✨

pm_genpd_init — Initialize a generic I/O PM domain object. That's it, that's the whole vibe: you're bringing a genpd into the world 🍼

🦋 SYNOPSIS 🦋

int pm_genpd_init (struct generic_pm_domain *genpd , struct
       dev_power_governor *gov , bool is_off );

three args, one int back, no cap. nothing else to it bestie 💅

🌸 ARGUMENTS 🌸

  • genpd — the PM domain object you're initializing. this is the one, the main character, the struct getting its whole setup 🫶
  • gov — the PM domain governor you're associating with the domain. and yes, it may be NULL — so if you don't have one, it's not a crisis, just pass NULL and keep it moving 🙈
  • is_off — the initial value of the domain's power_is_off field. yes literally that, it's just seeding the starting state, lowkey important ⭐

💜 DESCRIPTION 💜

Returns 0 on successful initialization — slay, we love a zero 🎉 — else a negative error code. so like, check your return value, bestie, negative means it did not eat 💀

🔥 SEE ALSO 🔥

the whole friend group, fr fr — and also the kernel file it lives in: ./drivers/pmdomain/core.c 👑

bestie note: that SEE ALSO list is long long, so don't panic — it's just the whole genpd extended universe showing up to support you 🫶💖

💅 and that's the page!! source is ./drivers/pmdomain, version/date is October 2026, and it's all from the Kernel API Manual (pm_genpd_init(9)) — go initialize something iconic 😭🎀✨

📦 where this page comes from