trace_call_bpf_faultable(9)

okay so bestie, welcome to the Kernel API Manual page for trace_call_bpf_faultable(9) — it's giving faultable tracepoint main character energy and I'm obsessed 💅✨

🎀 NAME 🎀

trace_call_bpf_faultable - invoke BPF program in faultable context 🦋

✨ SYNOPSIS ✨

unsigned int trace_call_bpf_faultable (struct trace_event_call *call ,
       void *ctx );

👑 ARGUMENTS 👑

• call — tracepoint event. that's the tracepoint event you're working with 🫶
• ctx — opaque context pointer. literally opaque, so don't expect to peek inside 🙈

💖 DESCRIPTION 💖

okay so this is a variant of trace_call_bpf for faultable tracepoints (syscall tracepoints) — no cap. It supports sleepable BPF programs by using rcu_tasks_trace for lifetime protection and bpf_prog_run_array_sleepable for per-program RCU flavor selection, following the uprobe pattern. 🧚

Per-program recursion protection is provided by bpf_prog_run_array_sleepable. Global bpf_prog_active is not needed because syscall tracepoints cannot self-recurse. 💀

⚠️ important vibe check: this must be called from a faultable/preemptible context. not optional, bestie.

🌈 SEE ALSO 🌈

• Kernel file ./kernel/trace/bpf_trace.c
• trace_call_bpf(9)

signed off with 💖 from the source/version lane ./kernel/trace, dated October 2026 — trace_call_bpf_faultable(9), periodt 💅✨