count_memcg_events(9)

💖 count_memcg_events(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one lives in the kernel-doc girlies corner, and honestly? it's a little one-shot function that just wants to keep the cgroup accounting books cute and correct 🎀

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🌸 NAME 🌸

count_memcg_events — literally just accounts VM events in a cgroup 💅 no cap, that's the whole job

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✨ SYNOPSIS ✨

void count_memcg_events (struct mem_cgroup *memcg , enum vm_event_item
idx , unsigned long count );

like yes, it returns void, she's not giving you anything back, she's just doing the work behind the scenes 👑

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🦋 ARGUMENTS 🦋

• memcg — the memory cgroup 🧚 the actual group-chat this event is getting posted in
• idx — the event item ⭐ the "which event are we even talking about" selector
• count — the number of events that occurred 🔥 how many times it happened, pls be honest

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👑 SEE ALSO 👑

Kernel file ./mm/memcontrol.c — go read the source bestie, she's right there 😭 and also all of these iconic siblings:

• get_mem_cgroup_css_from_folio(9)
• page_cgroup_ino(9)
• lruvec_page_state_monotonic(9)
• mod_memcg_state(9)
• mod_lruvec_state(9)
• get_mem_cgroup_from_mm(9)
• get_mem_cgroup_from_current(9)
• get_mem_cgroup_from_folio(9)
• mem_cgroup_iter(9)
• mem_cgroup_iter_break(9)
• mem_cgroup_scan_tasks(9)
• folio_lruvec_lock(9)
• folio_lruvec_lock_irq(9)
• folio_lruvec_lock_irqsave(9)
• mem_cgroup_update_lru_size(9)
• mem_cgroup_margin(9)
• mem_cgroup_print_oom_context(9)
• mem_cgroup_print_oom_meminfo(9)
• mem_cgroup_get_oom_group(9)
• consume_stock(9)
• __memcg_kmem_charge_page(9)
• __memcg_kmem_uncharge_page(9)
• mem_cgroup_wb_stats(9)
• mem_cgroup_from_private_id(9)
• mem_cgroup_css_reset(9)
• mem_cgroup_calculate_protection(9)
• mem_cgroup_charge_hugetlb(9)
• mem_cgroup_swapin_charge_folio(9)
• mem_cgroup_replace_folio(9)
• mem_cgroup_migrate(9)
• mem_cgroup_sk_charge(9)
• mem_cgroup_sk_uncharge(9)
• __mem_cgroup_try_charge_swap(9)
• __mem_cgroup_uncharge_swap(9)
• obj_cgroup_may_zswap(9)
• obj_cgroup_charge_zswap(9)
• obj_cgroup_uncharge_zswap(9)

iykyk, that's a whole friend group right there 🫶

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okay that's the page!! 💜 this little cutie is served from the ./mm directory, dated October 2026, and she answers to the name count_memcg_events(9) — mwah, slay, periodt 💅✨