STRUCT KFREE_RCU_CPU_WORK(9)

🦋 struct kfree_rcu_cpu_work(9) 🦋

okay so this is a page straight out of the Kernel API Manual, and bestie, we're talking about struct kfree_rcu_cpu_work — literally the single batch of kfree_rcu() requests 💅. That's the whole vibe. One struct, one batch, one grace period, no cap.

💖 NAME 💖

struct kfree_rcu_cpu_work — single batch of kfree_rcu() requests ✨

🌸 SYNOPSIS 🌸

like, here's the whole glow-up, exactly as written:

struct kfree_rcu_cpu_work {
    struct rcu_work rcu_work;
    struct kvfree_rcu_head *head_free;
    struct rcu_gp_seq head_free_gp_snap;
    struct list_head bulk_head_free[FREE_N_CHANNELS];
    struct kfree_rcu_cpu *krcp;
 };

🎀 Members 🎀

• rcu_work — this one's the plug ✨ it lets queue_rcu_work invoke the workqueue handler after a grace period. patient queen behavior honestly.
• head_free — the list of kfree_rcu objects that are just sitting there waiting for a grace period 🫶
• head_free_gp_snap — a grace-period snapshot, and its whole job is to check for attempted premature frees 😭 like, don't free early babe, that's not the move.
• bulk_head_free — the bulk-list of kvfree_rcu objects waiting for a grace period 🦋 (yes it's an array, yes it's iconic)
• krcp — a pointer to the kfree_rcu_cpu structure 👑

⭐ SEE ALSO ⭐

go read these next, iykyk 🔥 — Kernel file ./mm/slab_common.c __kmem_cache_create_args(9), kmem_buckets_create(9), kmem_cache_shrink(9), kmem_dump_obj(9), kfree_sensitive(9), struct kvfree_rcu_bulk_data(9), struct kfree_rcu_cpu(9), kvfree_rcu_barrier(9), kvfree_rcu_barrier_on_cache(9)

and that's the page bestie, no notes 🌈 this little gem lives in ./mm, and it's dated October 2026 — so like, future iconic 💀💜 mwah, go touch some grace periods 🧚