default_metricgroup_cmp(9)

💅 default_metricgroup_cmp(9) — like, the Kernel API Manual edition 🎀

okay so bestie, gather round, because this one is a tiny function with a very specific job and honestly? it ate. ✨

---

🌸 NAME 🌸

default_metricgroup_cmp — the icon that implements the complex key for the Default metricgroup, and the way it works is that it first sorts by default_metricgroup_name, then by metric_name. two-pass sorting, main character energy only. 👑

---

🦋 SYNOPSIS 🦋

int default_metricgroup_cmp (void *priv , const struct list_head *l ,
                            const struct list_head *r );

yes she takes three args and yes she returns an int. no notes. 💅

---

💖 ARGUMENTS 💖

• priv — ngl bestie, this one is undescribed. the manpage literally says "-- undescribed --" and we are not out here making things up. 🙈
• l — also undescribed. mysterious. lowkey giving "we'll never know." 😭
• r — undescribed too, fr fr. three for three, an absolute vibe check fail but we love her anyway. 💀

no cap, all three arguments are listed as undescribed in the original — so don't come for me, I'm just the messenger 🫶

---

⭐ SEE ALSO ⭐

the whole friend group, in the order they were introduced, periodt:

• the kernel file ./tools/perf/util/metricgroup.c
• setup_metric_events(9)
• resolve_metric(9)
• __add_metric(9)
• metric_list_cmp(9)
• metricgroup__add_metric(9)
• metricgroup__add_metric_list(9)
• find_tool_events(9)
• build_combined_expr_ctx(9)
• parse_ids(9)

---

and that's the whole page, babes 🧚 this little cutie lives in ./tools/perf/util and the version stamp is dated October 2026 — so yeah, she's from the future and still sorting metricgroups correctly. iconic behavior, honestly. 🌈💜

stay slay, read your manpages, and remember: sort by default_metricgroup_name first. always. 🍓✨