scx_bpf_select_cpu_and(9)

scx_bpf_select_cpu_and(9) 💅✨

okay so bestie, welcome to the Kernel API Manual, section 9 — this is the page for scx_bpf_select_cpu_and, and it's lowkey just scheduler matchmaking. It picks an idle CPU usable by task @p. no cap. 🦋

🌸 NAME 🌸

scx_bpf_select_cpu_and — Pick an idle CPU usable by task @p.

🎀 SYNOPSIS 🎀

here's the signature, exactly as it is, because we do not edit code in this group chat:

s32 scx_bpf_select_cpu_and (struct task_struct *p , s32 prev_cpu , u64
wake_flags , const struct cpumask *cpus_allowed , u64 flags );

🧚 ARGUMENTS 🧚

okay so the cast of characters:

• p — task_struct to select a CPU for. main character task energy 👑
• prev_cpu — CPU p was on previously.
• wake_flags — SCX_WAKE_* flags.
• cpus_allowed — cpumask of allowed CPUs.
• flags — SCX_PICK_IDLE* flags.

🔥 DESCRIPTION 🔥

This is an inline wrapper that packs scalar arguments into a struct and calls __scx_bpf_select_cpu_and. That's the whole move, bestie. See __scx_bpf_select_cpu_and for details. 👑

🌈 SEE ALSO 🌈

• Kernel file ./tools/sched_ext/include/scx/compat.bpf.h
• __COMPAT_is_enq_cpu_selected(9)
• scx_bpf_dsq_insert_vtime(9)

okay that's the page! source/version: ./tools/sched_ext/include/scx, date: October 2026. scx_bpf_select_cpu_and(9) out — mwah 💋🫶