htb_activate(9)

💖 htb_activate — the manual page, but make it make sense 💖

okay so bestie, welcome to htb_activate(9) from the Kernel API Manual 🎀 — section 9, kernel-space only, no userland shenanigans here. this one's a lil function, she's small, but she's important, so let's get into it ✨

---

🌸 NAME 🌸

htb_activate — inserts leaf cl into the appropriate active feeds 🦋

like… she takes a leaf class and puts her where she belongs. that's the whole gig. slay.

---

✨ SYNOPSIS ✨

void htb_activate (struct htb_sched *q , struct htb_class *cl );

void return, two args, no cap. she doesn't hand anything back, she just does the thing 💅

---

🫶 ARGUMENTS 🫶

• q — the priority event queue 👑 this is the scheduler context she's working inside
• cl — the target class 🎯 the leaf she's about to activate

---

🔥 DESCRIPTION 🔥

okay so here's the vibe: the routine learns the (new) priority of the leaf, and then activates the feed chain for that prio. it's giving "glow-up, but for a scheduler class" ✨

and here's the cute part — you can call it on an already active leaf safely 💖 no double-activation disaster, no drama, she just handles it. very demure, very mindful.

oh and also? she adds the leaf into the droplist too 📋 so yeah. two jobs. iconic.

---

🌈 SEE ALSO 🌈

all her friends live in the kernel file ./net/sched/sch_htb.c — go say hi 👋

• htb_classify(9)
• htb_add_to_id_tree(9)
• htb_add_to_wait_tree(9)
• htb_next_rb_node(9)
• htb_add_class_to_row(9)
• htb_remove_class_from_row(9)
• htb_activate_prios(9)
• htb_deactivate_prios(9)
• htb_class_mode(9)
• htb_change_class_mode(9)
• htb_deactivate(9)
• htb_charge_class(9)
• htb_do_events(9)
• htb_lookup_leaf(9)

---

💀 reminder bestie: this is kernel API, section 9. it's not for your lil shell script. respect the boundary 🫶

---

and that's the page!! mwah 💋 this lil rewrite comes to you from the source dir ./net/sched, dated October 2026 — stay hydrated, read your sch_htb.c, and remember: leaf classes deserve love too 🌸💜⭐