perf_cpu_map__new(9)

🎀 NAME 🎀

okay so bestie, welcome to the perf_cpu_map__new(9) page from the Kernel API Manual 💖 This one is literally about creating a map from the cpu_list you hand it, like "0-7" — iconic. And if no cpu_list argument is provided, then perf_cpu_map__new_online_cpus is returned instead. periodt ✨

✨ SYNOPSIS ✨

LIBPERF_API struct perf_cpu_map * perf_cpu_map__new (const char
       *cpu_list );

🫶 ARGUMENTS 🫶

• cpu_list — bestie, the original page literally says -- undescribed -- 😭 so there are no extra deets here. no cap, that's all it gives us.

🔮 SEE ALSO 🔮

• Kernel file ./tools/lib/perf/include/perf/cpumap.h, plus struct perf_cpu(9) 👑
• perf_cpu_map__new_any_cpu(9) 🌸
• perf_cpu_map__new_online_cpus(9) ✨
• perf_cpu_map__cpu(9) 🦋
• perf_cpu_map__nr(9) 🎀
• perf_cpu_map__has_any_cpu_or_is_empty(9) 💜
• perf_cpu_map__is_any_cpu_or_is_empty(9) 🫶
• perf_cpu_map__is_empty(9) 🌈
• perf_cpu_map__min(9) ⭐
• perf_cpu_map__max(9) 🔥

mwah 💋 — this page’s source/version is ./tools/lib/perf/include/perf, and it’s dated October 2026. slay, go read the other pages now 🧚