P4_ESCR_T0_USR 148 arch/x86/include/asm/perf_event_p4.h P4_ESCR_T0_USR | \ P4_ESCR_T0_USR 227 arch/x86/include/asm/perf_event_p4.h escr |= P4_ESCR_T0_USR;