fastpath_timer_check(9)

🎀 NAME 🎀

fastpath_timer_check — POSIX CPU timers fast path.

okay bestie, this is the fastpath_timer_check(9) page from the Kernel API Manual, and it's lowkey a little speed-check for POSIX CPU timers ✨

💅 SYNOPSIS 💅

bool fastpath_timer_check (struct task_struct *tsk );

🦋 ARGUMENTS 🦋

• tsk — the task (thread) being checked. that's the one we're looking at, bestie 🫶

🌸 DESCRIPTION 🌸

It checks the task and thread group timers. if both are zero (there are no timers set), it returns false. no timers, no drama, periodt 💀

Otherwise, it snapshots the task and thread group timers and compares them with the corresponding expiration times. then it returns true if a timer has expired — and if not, it returns false. that's the whole vibe check 🔥

⭐ SEE ALSO ⭐

• Kernel file: ./kernel/time/posix-cpu-timers.c
• thread_group_sample_cputime(9)
• thread_group_start_cputime(9)
• task_cputimers_expired(9)

later bestie 💖 this one came from ./kernel/time, October 2026, and it's serving fastpath_timer_check(9) realness 🎀✨