perf_sample_allowed_ns 424 kernel/events/core.c static int perf_sample_allowed_ns __read_mostly = perf_sample_allowed_ns 436 kernel/events/core.c WRITE_ONCE(perf_sample_allowed_ns, tmp); perf_sample_allowed_ns 479 kernel/events/core.c WRITE_ONCE(perf_sample_allowed_ns, 0); perf_sample_allowed_ns 512 kernel/events/core.c u64 max_len = READ_ONCE(perf_sample_allowed_ns); perf_sample_allowed_ns 548 kernel/events/core.c WRITE_ONCE(perf_sample_allowed_ns, avg_len);