l3_mon_domain_mbm_alloc(9)

l3_mon_domain_mbm_alloc(9) is living in the Kernel API Manual, and this whole page is about one very specific little allocation moment. Bestie, it’s giving “set aside arch private storage for the MBM counters,” no cap. 💅

✨ NAME ✨

l3_mon_domain_mbm_alloc — allocate arch private storage for the MBM counters. That’s the whole assignment, and she ate. 💖

🦋 SYNOPSIS 🦋

int l3_mon_domain_mbm_alloc (u32 num_rmid , struct rdt_hw_l3_mon_domain
*hw_dom );

Okay so here’s the tea, bestie: this is the exact signature. Character-for-character, periodt. 🎀

🎀 ARGUMENTS 🎀

• num_rmid — the size of the MBM counter array. That’s the number she needs for the array, fr fr. 🍓
• hw_dom — the domain that owns the allocated arrays. She’s the main character holding the arrays. 👑

💖 RETURN 💖

0 for success, or -ENOMEM. That’s it, that’s the whole mood: zero is the slay outcome, and -ENOMEM is the other possible return. 😭

🌈 SEE ALSO 🌈

• Kernel file ./arch/x86/kernel/cpu/resctrl/core.c
• resctrl_arch_system_num_rmid_idx(9)

This page came from the source tree at ./arch/x86/kernel/cpu/resctrl, dated October 2026, and it’s signing off with all the sparkle: stay allocated, bestie. 💜🎀🫶