PERF_TXN_MAX      259 include/uapi/linux/perf_event.h 	PERF_TXN_MAX	        = (1 << 8), /* non-ABI */
PERF_TXN_MAX      259 tools/include/uapi/linux/perf_event.h 	PERF_TXN_MAX	        = (1 << 8), /* non-ABI */