blk_mq_num_online_queues(9)

✨ NAME ✨

okay so bestie, welcome to the Kernel API Manual 💖 this icon is blk_mq_num_online_queues(9), and its whole NAME vibe is: Calc nr of queues for multiqueue devices. slay.

🌸 SYNOPSIS 🌸

unsigned int blk_mq_num_online_queues (unsigned int max_queues );

🎀 ARGUMENTS 🎀

• max_queues — The maximum number of queues the hardware/driver supports. If max_queues is 0, the argument is ignored. periodt 💅

🦋 DESCRIPTION 🦋

Calculates the number of queues to be used for a multiqueue device based on the number of online CPUs. that's the whole plot, no cap ✨

🔥 SEE ALSO 🔥

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

go read those too, iykyk 👑

xoxo, this cutie page comes from source/version ./block, dated October 2026, and yes it’s still blk_mq_num_online_queues(9) core 🫶💖✨