tools/arch/arm64/include/uapi/asm/mman.h - manifest_repos/kernel - Git at Google

 #ifndef TOOLS_ARCH_ARM64_UAPI_ASM_MMAN_FIX_H
 #define TOOLS_ARCH_ARM64_UAPI_ASM_MMAN_FIX_H
 #include <uapi/asm-generic/mman.h>
 /* MAP_32BIT is undefined on arm64, fix it for perf */
 #define MAP_32BIT	0
 #endif
	#ifndef TOOLS_ARCH_ARM64_UAPI_ASM_MMAN_FIX_H
	#define TOOLS_ARCH_ARM64_UAPI_ASM_MMAN_FIX_H
	#include <uapi/asm-generic/mman.h>
	/* MAP_32BIT is undefined on arm64, fix it for perf */
	#define MAP_32BIT 0
	#endif