gcov_enable_events(9)
β¨ gcov_enable_events(9) β¨
okay so this is a page straight out of the Kernel API Manual (yes, the Kernel API Manual, she's iconic) and honestly? it's a little function with a big job. let's get into it π
π NAME π
gcov_enable_events β turn on event reporting through gcov_event()
like literally, it's the "go live" button for gcov events π¦
πΈ SYNOPSIS πΈ
void gcov_enable_events (void );
that's it. that's the whole vibe. no args, no drama, just void in and void out β¨
π ARGUMENTS π
voidβ no arguments. nothing. nada. she takes zero input and she's thriving π«Ά
π₯ DESCRIPTION π₯
okay bestie listen up, because this is the actual tea β
This function turns on the reporting of profiling data load/unload-events through the gcov_event callback. so all those events that were just sitting there waiting? they get reported now. slay.
AND β not me forgetting the best part β it also replays all previous events once. one time. a little encore performance for the events that already happened π
why does this exist, you ask? because some events are potentially generated too early for the callback implementation to handle them initially. like, imagine showing up to the party before the host even unlocked the door π so the move is: collect them quietly, then call this function and let the whole backlog spill out in order. literally the "okay now you can look" of kernel callbacks π
ngl this one's lowkey important β if you never enable events, the early ones are just out there vibing with nowhere to go π
π SEE ALSO π
- Kernel file
./kernel/gcov/base.c store_gcov_u32(9)store_gcov_u64(9)
go read those next, iykyk πβ¨
and that's the whole page, bestie π this little gem lives in ./kernel/gcov, dated October 2026, and it's filed under gcov_enable_events(9) β remember the name, she ate and left no crumbs ππ§ββοΈ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms