resctrl_arch_reset_cntr(9)

💅 resctrl_arch_reset_cntr(9) — the Kernel API Manual page, but make it make sense

okay bestie so this is a page from the Kernel API Manual and it's all about resctrl_arch_reset_cntr — literally the lil function that wipes the private state hanging off a counter ID. it's short, it's sweet, and yes we're gonna read the whole thing together 🫶

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✨ NAME ✨

resctrl_arch_reset_cntr — reset any private state associated with a counter ID. that's it, that's the whole personality 🎀

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🌸 SYNOPSIS 🌸

void resctrl_arch_reset_cntr (struct rdt_resource *r , struct
rdt_l3_mon_domain *d , u32 closid , u32 rmid , int cntr_id , enum
resctrl_event_id eventid );

like, look at her. six arguments, returns nothing (void), absolute main character energy 👑

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🦋 ARGUMENTS 🦋

• r — the domain's resource. your resource, your rules 💖
• d — the counter ID's domain. every counter's gotta live somewhere, and this is where 🏠
• closid — the CLOSID that matches the RMID. they're a matching set, iykyk ✨
• rmid — the RMID that cntr_id is assigned to. the one and only 🔥
• cntr_id — the counter you're actually resetting. the star of the show ⭐
• eventid — the MBM event that cntr_id is assigned to. context is everything, fr fr 💜

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🧚 DESCRIPTION 🧚

so what does she do? she resets the private state associated with a counter ID. and the big flex:

this can be called from any CPU. no pinning, no stressing, no "wait which core am I on" panic. she's chill like that 😌

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👑 SEE ALSO 👑

okay this is the part where the page name-drops literally everyone in the friend group. and when I say everyone, I mean everyone — no cap, all of these:

• Kernel file ./include/linux/resctrl.h
• enum resctrl_conf_type(9)
• struct resctrl_staged_config(9)
• struct rdt_domain_hdr(9)
• struct rdt_ctrl_domain(9)
• struct mbm_cntr_cfg(9)
• struct rdt_l3_mon_domain(9)
• struct resctrl_cache(9)
• enum membw_throttle_mode(9)
• struct resctrl_membw(9)
• enum resctrl_schema_fmt(9)
• struct resctrl_mon(9)
• struct rdt_resource(9)
• struct resctrl_schema(9)
• resctrl_arch_sync_cpu_closid_rmid(9)
• resctrl_get_default_ctrl(9)
• resctrl_arch_mon_event_config_write(9)
• resctrl_arch_mon_event_config_read(9)
• resctrl_arch_mbm_cntr_assign_enabled(9)
• resctrl_arch_mbm_cntr_assign_set(9)
• resctrl_arch_rmid_read(9)
• resctrl_arch_rmid_read_context_check(9)
• resctrl_find_domain(9)
• resctrl_arch_reset_rmid(9)
• resctrl_arch_reset_rmid_all(9)
• resctrl_arch_reset_all_ctrls(9)
• resctrl_arch_config_cntr(9)
• resctrl_arch_cntr_read(9)
• resctrl_arch_io_alloc_enable(9)
• resctrl_arch_get_io_alloc_enabled(9)

like I said. the whole group chat 🌈

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k bye bestie, go reset some counters 💅✨

this page lives over in ./include/linux, it's dated October 2026, and it's brought to you by the one and only resctrl_arch_reset_cntr(9) — mwah, love u, see u in the man pages 🍓🎀