event_trigger_set_filter(9)

📦 version 7.3.1, in nixpkgs unstable

✨ event_trigger_set_filter(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 — yes this is a section 9 manpage, yes it's about kernel internals, and yes we're gonna make it cute. this one is event_trigger_set_filter and honestly? it does exactly what it says on the tin. lowkey iconic. 🎀

🌸 NAME 🌸

event_trigger_set_filter — set an event trigger's filter ✨

🦋 SYNOPSIS 🦋

int event_trigger_set_filter (struct event_command *cmd_ops , struct
trace_event_file *file , char *param , struct event_trigger_data
*trigger_data );

that's the whole signature, no cap. copy it exactly, don't come for me about the spacing 💅

💜 ARGUMENTS 💜

  • cmd_ops — the event_command operations for the trigger. it's giving "the instructions on how this trigger behaves" energy 🫶
  • file — the event file for the trigger's event. your main character file, the one hosting all this ✨
  • param — the string containing the filter. this is the actual filter text, bestie 📝
  • trigger_data — the trigger_data for the trigger. all the trigger's little details live in here 💖

🔥 DESCRIPTION 🔥

so here's the vibe: this function sets the filter for the trigger. that's it. that's the whole job. 🌈

but wait — plot twist — if the filter is NULL, it just returns without error. like, no filter, no problem, we're not gonna yell at you about it 🙈. no error, no drama, we simply vibe on out. 🧚

⭐ RETURN ⭐

0 on success, errno otherwise. simple. slay. 👑

🍓 SEE ALSO 🍓

the kernel file is right here if you wanna peek at the source, iykyk:

  • Kernel file ./kernel/trace/trace_events_trigger.c

and the whole friend group 💜:

ngl the SEE ALSO list is longer than the manpage itself and i respect the commitment 💀 go read set_trigger_filter(9) next, it's literally the sibling of this one 🫶

and that's the page!! mwah 💋 this one came from ./kernel/trace, dated October 2026 — so yeah, extremely current, extremely kernel, extremely slay. bye bestie, go set some filters 🌸✨🎀

📦 where this page comes from