PERF_ATTR_SIZE_VER4  301 include/uapi/linux/perf_event.h #define PERF_ATTR_SIZE_VER4	104	/* add: sample_regs_intr */
PERF_ATTR_SIZE_VER4  301 tools/include/uapi/linux/perf_event.h #define PERF_ATTR_SIZE_VER4	104	/* add: sample_regs_intr */