__perf_evsel__calc_id_pos(9)

🎀 __perf_evsel__calc_id_pos(9) 🎀

okay so bestie, welcome to the Kernel API Manual corner of the group chat 💅 this page is all about __perf_evsel__calc_id_pos, and it's giving “find the event id's spot in the sample array” energy. no cap.

✨ NAME ✨

__perf_evsel__calc_id_pos — calculate id_pos. periodt 💖

🌸 SYNOPSIS 🌸

int __perf_evsel__calc_id_pos (u64 sample_type );

🦋 ARGUMENTS 🦋

• sample_type — sample type. that's the one and only argument, bestie 🫶

💖 DESCRIPTION 💖

this function returns the position of the event id in a sample event. the event id is PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER, and the sample event is i.e. the array of struct perf_record_sample. literally an index-hunt main character moment ✨

👑 SEE ALSO 👑

• Kernel file ./tools/perf/util/evsel.c
• __perf_evsel__calc_is_pos(9)
• evsel__is_function_event(9)
• evsel__clone(9)
• evsel__is_hybrid(9)

💌 cute sign-off bestie: source/version is ./tools/perf/util, date is October 2026, page is __perf_evsel__calc_id_pos(9). go slay that sample event 💜