P4_ESCR_EVENT_SHIFT 39 arch/x86/include/asm/perf_event_p4.h #define P4_ESCR_EVENT(v) ((v) << P4_ESCR_EVENT_SHIFT) P4_ESCR_EVENT_SHIFT 97 arch/x86/include/asm/perf_event_p4.h t = t >> P4_ESCR_EVENT_SHIFT; \