blk_mq_map_hw_queues(9)

okay so bestie, welcome to blk_mq_map_hw_queues(9) from the Kernel API Manual — it’s giving tiny-but-iconic kernel API energy, and we’re obsessed 💅✨

🌸 NAME 🌸

blk_mq_map_hw_queues — Create CPU to hardware queue mapping

✨ SYNOPSIS ✨

void blk_mq_map_hw_queues (struct blk_mq_queue_map *qmap , struct device
       *dev , unsigned int offset );

🎀 ARGUMENTS 🎀

• qmap — CPU to hardware queue map. That’s the map, bestie 💖
• dev — The device to map queues. Like, the device in question 🦋
• offset — Queue offset to use for the device. The offset vibe for this device, periodt ✨

💖 DESCRIPTION 💖

okay so what this does is create a CPU to hardware queue mapping in qmap. The struct bus_type irq_get_affinity callback will be used to retrieve the affinity. That’s literally the whole plot, and it ate 🔥👑

🔥 SEE ALSO 🔥

• Kernel file ./block/blk-mq-cpumap.c
• blk_mq_num_possible_queues(9)
• blk_mq_num_online_queues(9)
• blk_mq_hw_queue_to_node(9)

mwah 💋 this lil page is from source/version ./block, dated October 2026, and it’s literally blk_mq_map_hw_queues(9) — no cap, periodt 🫶🌈