build_combined_expr_ctx(9)

💖 build_combined_expr_ctx(9) 💖

okay so bestie, welcome to the Kernel API Manual glow-up for build_combined_expr_ctx(9) — the function that's lowkey the group-chat organizer for metric IDs. ✨

✨ NAME ✨

build_combined_expr_ctx — Make an expr_parse_ctx with all !group_events metric IDs, as the IDs are held in a set, duplicates will be removed.

Translation for the besties: it builds that combined expression context from every !group_events metric ID, and because those IDs are chilling in a set, any dupes get yeeted automatically. no cap. 💅

📜 SYNOPSIS 📜

int build_combined_expr_ctx (const struct list_head *metric_list ,
struct expr_parse_ctx **combined );

🎀 ARGUMENTS 🎀

• metric_list — List to take metrics from.
• combined — Out argument for result.

🔮 SEE ALSO 🔮

Kernel file ./tools/perf/util/metricgroup.c — yes, that's the source, go peek. 👀

• setup_metric_events(9)
• resolve_metric(9)
• __add_metric(9)
• metric_list_cmp(9)
• default_metricgroup_cmp(9)
• metricgroup__add_metric(9)
• metricgroup__add_metric_list(9)
• find_tool_events(9)
• parse_ids(9)

that's the whole vibe, bestie 🫶 — source/version ./tools/perf/util, dated October 2026, signed build_combined_expr_ctx(9). mwah 💖