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439ebd5b57
Rework __bpf_trace_run() to support sleepable BPF programs by using explicit RCU flavor selection, following the uprobe_prog_run() pattern. For sleepable programs, use rcu_read_lock_tasks_trace() for lifetime protection with migrate_disable(). For non-sleepable programs, use the regular rcu_read_lock_dont_migrate(). Remove the preempt_disable_notrace/preempt_enable_notrace pair from the faultable tracepoint BPF probe wrapper in bpf_probe.h, since migration protection and RCU locking are now handled per-program inside __bpf_trace_run(). Adapt bpf_prog_test_run_raw_tp() for sleepable programs: reject BPF_F_TEST_RUN_ON_CPU since sleepable programs cannot run in hardirq or preempt-disabled context, and call __bpf_prog_test_run_raw_tp() directly instead of via smp_call_function_single(). Rework __bpf_prog_test_run_raw_tp() to select RCU flavor per-program and add per-program recursion context guard for private stack safety. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/bpf/20260422-sleepable_tracepoints-v13-1-99005dff21ef@meta.com Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> |
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| .. | ||
| events | ||
| misc | ||
| stages | ||
| bpf_probe.h | ||
| define_custom_trace.h | ||
| define_remote_events.h | ||
| define_trace.h | ||
| perf.h | ||
| syscall.h | ||
| trace_custom_events.h | ||
| trace_events.h | ||