bpf_percpu_obj_drop(9)

✨ bpf_percpu_obj_drop(9) ✨

okay so welcome to the Kernel API Manual page for this little cleanup icon 💅 — it’s short, it’s sweet, and it’s all about freeing a percpu object without leaving your bestie confused. periodt.

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🎀 NAME 🎀

bpf_percpu_obj_drop — drop a previously allocated percpu object

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🦋 SYNOPSIS 🦋

__bpf_kfunc void bpf_percpu_obj_drop (void *p__alloc , struct
       btf_struct_meta *meta );

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🫶 ARGUMENTS 🫶

• p__alloc — percpu object to free
• meta — verifier-supplied struct metadata

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💖 DESCRIPTION 💖

Free p__alloc. The verifier rewrites meta — BPF programs do not set it. no cap, that’s literally the whole job 🫡✨

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🌈 SEE ALSO 🌈

The kernel file is ./kernel/bpf/helpers.c, and the whole extended squad is right here:

• bpf_obj_new(9)
• bpf_percpu_obj_new(9)
• bpf_obj_drop(9)
• bpf_refcount_acquire(9)
• bpf_list_push_front(9)
• bpf_list_push_back(9)
• bpf_rbtree_add(9)
• bpf_task_acquire(9)
• bpf_task_release(9)
• bpf_cgroup_acquire(9)
• bpf_cgroup_release(9)
• bpf_cgroup_ancestor(9)
• bpf_cgroup_from_id(9)
• bpf_task_under_cgroup(9)
• bpf_task_get_cgroup1(9)
• bpf_task_from_pid(9)
• bpf_task_from_vpid(9)
• bpf_dynptr_slice(9)
• bpf_dynptr_slice_rdwr(9)
• bpf_dynptr_copy(9)
• bpf_dynptr_memset(9)
• bpf_iter_bits_new(9)
• bpf_iter_bits_next(9)
• bpf_iter_bits_destroy(9)
• bpf_copy_from_user_str(9)
• bpf_copy_from_user_task_str(9)
• bpf_strcmp(9)
• bpf_strcasecmp(9)
• bpf_strnchr(9)
• bpf_strchr(9)
• bpf_strchrnul(9)
• bpf_strrchr(9)
• bpf_strnlen(9)
• bpf_strlen(9)
• bpf_strspn(9)
• bpf_strcspn(9)
• bpf_strstr(9)
• bpf_strcasestr(9)
• bpf_strnstr(9)
• bpf_strncasestr(9)
• bpf_lookup_user_key(9)
• bpf_lookup_system_key(9)
• bpf_key_put(9)
• bpf_verify_pkcs7_signature(9)
• bpf_task_work_schedule_signal(9)
• bpf_task_work_schedule_resume(9)
• bpf_timer_cancel_async(9)

mwah 💋 — sourced from ./kernel/bpf, dated October 2026, and yes the vibe check passed 🌸👑