bpf_prog_select_runtime(9)

🌸 NAME 🌸

bpf_prog_select_runtime(9) is hanging out in the Kernel API Manual, and bestie, its whole main-character job is to select exec runtime for BPF program. That’s the vibe. 💅

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✨ SYNOPSIS ✨

struct bpf_prog * bpf_prog_select_runtime (struct bpf_prog *fp , int
       *err );

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🎀 ARGUMENTS 🎀

• fp — this is the bpf_prog, populated with the BPF program. Like, it’s the whole program container, bestie. 🫶
• err — pointer to error variable. It’s where the error info goes. 👑

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💅 DESCRIPTION 💅

okay so the plan is literally: try to JIT the eBPF program. If JIT is not available, use the interpreter. No cap, that’s the runtime selection situation. 🌈

The BPF program will be executed via the bpf_prog_run function. That’s the function doing the actual running, fr fr. 🔥

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🫶 RETURN 🫶

It gives you back the fp argument, along with err set to 0 for success or a negative errno code on failure. slay — success is 0, failure is a negative errno, periodt. 💖

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🔥 SEE ALSO 🔥

• Kernel file ./kernel/bpf/core.c — ___bpf_prog_run(9) 👑
• bpf_prog_array_delete_safe_at(9) 🦋
• bpf_prog_array_update_at(9) 🌸

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okay bestie, that’s the whole page — from the ./kernel/bpf source/version corner, dated October 2026, with all the bpf_prog_select_runtime(9) energy we deserve 💖🎀✨