synth_event_trace_end(9)

📦 version 7.3.1, in nixpkgs unstable

💅 synth_event_trace_end(9) — like, the Kernel API Manual bestie ✨

okay so real talk, this is a page from the Kernel API Manual, and it's about wrapping up a piecewise synthetic event trace. yes that's a lot of words. stay with me, it slaps once u get it 🫶

🌸 NAME 🌸

synth_event_trace_end — end piecewise synthetic event trace, that's literally the whole vibe

✨ SYNOPSIS ✨

int synth_event_trace_end (struct synth_event_trace_state *trace_state
);

like, one function, one arg, no drama 👑

🎀 ARGUMENTS 🎀

  • trace_state — a pointer to the object that's out here tracking the piecewise trace state. it's the main character of this whole operation fr 💖

🦋 DESCRIPTION 🦋

so this is the one that ends the trace of a synthetic event that you opened with synth_event_trace__start (yes, that's two underscores in the original, don't @ me, it's giving typo but it's their typo 🙈).

this function basically "closes" an event trace, which means it commits the reserved event and cleans up all the other loose ends. like when u finally hit send on the group chat draft and clear out the 47 half-typed messages. iconic behaviour, honestly ✨

u pass in a pointer to a trace_state object, and that object keeps track of the current event trace state that was opened with synth_event_trace_start. it's the little notebook that remembers where u were 📓

⚠️ real talk tho: u must call this function after all the values have been added for each event trace — regardless of whether adding all the field values succeeded or not. like even if it all went sideways, u still close it. no leaving it hanging, bestie. that's not slay, that's a leak 💀

🔥 RETURN 🔥

  • 0 on success 🎉
  • err otherwise 😭

that's it. that's the whole return section.

👑 SEE ALSO 👑

kernel file ./kernel/trace/trace_events_synth.c (the whole source, go read it if ur that girl 💅)

and the whole friend group of related functions:

🌈 and that's the page!! go close ur traces properly, ur kernel will thank u

signing off from ./kernel/trace — October 2026, synth_event_trace_end(9), no cap 🫶💜🍓

📦 where this page comes from